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Synthesis and structural characterization of new ladder-like organostannoxanes derived from carboxylic acid derivatives: [C5H4N(p-CO2)]2[Bu2Sn]4(μ 3 -O)2(μ 2 -OH)2, [Ph2CHCO2]4[Bu2Sn]4(μ 3 -O)2, and [(p-NH2)-C6H4-CO2]2[Bu2Sn]4(μ 3 -O)2(μ 2 -OH)2 Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Tidiane Diop,Mouhamadou Birame Diop,Cheikh Abdoul Khadir Diop,Aminata Diasse-Sarr,Mamadou Sidibe,Florina Dumitru,Arie van der Lee
Abstract Three types of ladder-like organostannoxanes, [C5H4N(p-CO2)]2[Bu2Sn]4(μ 3-O)2(μ 2-OH)2 (1), [Ph2CHCO2]4[Bu2Sn]4(μ 3-O)2 (2), and [(p-NH2)-C6H4-CO2]2[Bu2Sn]4(μ 3 -O)2(μ 2 -OH)2 (3), have been synthesized and characterized using elemental analyses, Fourier-transform infrared spectroscopy, nuclear magnetic resonance (1H, 13C) experiments, and, for 1 and 2, single-crystal X-ray diffraction analysis
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HPA-ZSM-5 nanocomposite as high-performance catalyst for the synthesis of indenopyrazolones Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Seyyed Mohammad Ebrahimi,Javad Safaei-Ghomi,Mohammaed Abdulridha Mutashar
Abstract tHPA-ZSM-5 nanocomposites as a superior catalyst have been applied for the synthesis of indenopyrazolones through a three-component reaction of phenylhydrazine, benzaldehydes, and indan-1,2,3-trione at room temperature in acetonitrile. The zeolite catalyst has been characterized by X-ray diffraction, field emission scanning electronic microscopes, Fourier transform infrared, energy-dispersive
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Structures devised by the generalizations of two graph operations and their topological descriptors Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Hassan Raza,Muhammad Waheed,Muhammad Kamran Jamil,Muhammad Azeem
Abstract Graph theory served in different fields of sciences, especially in chemistry in which creating complex structures and studying their enormous properties. Graph operation is a tool to construct complex chemical structures using basic graphs. While studying their properties, topological descriptors are a well-known methodology introduced by chemists, and even after half of a century past, it
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Ultra-fast and effective ultrasonic synthesis of potassium borate: Santite Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Sibel İla,Azmi Seyhun Kipcak,Emek Moroydor Derun
Abstract In this study, a potassium borate compound of santite is synthesized at 60°C, 70°C, 80°C, and 90°C reaction temperature for 2.5, 5, 10, and 15 min reaction time by using eight different raw material combinations of K2CO3, KNO3, NaOH, H3BO3, B2O3, Na2B4O9·5H2O, and Na2B4O9·10H2O. According to the X-ray diffraction analysis synthesized potassium borate compound is identified as “santite (KB5O8·4H2O)”
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Computation of edge- and vertex-degree-based topological indices for tetrahedral sheets of clay minerals Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Al-Nashri Al-Hossain Ahmad,Ali Ahmad,Muhammad Azeem
Abstract In terms of soil conditions, clay minerals infrequently occur as homogenous mixtures of single constituents, gatherings, stages, or types of minerals. Rather, they contain intricate arrays of essential minerals and rippling intermediates of numerous basic and synergistic mixtures. There is also the possibility that a discrete mineral grain is composed of more than one clay type or has sections
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Embedded three spinel ferrite nanoparticles in PES-based nano filtration membranes with enhanced separation properties Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Davood Ghanbari, Samaneh BandehAli, Abdolreza Moghadassi
In this study, three types of ferrites nanoparticles including CoFe 2 O 4 , NiFe 2 O 4 , and ZnFe 2 O 4 were synthesized by microwave-assisted hydrothermal method. The X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) were employed to analyze synthesized nanoparticles and fabricated membranes. The morphology of
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Syntheses and crystal structures of ethyltin complexes with ferrocenecarboxylic acid Main Group Metal Chem. (IF 1.8) Pub Date : 2022-01-01 Ruili Wang, Jing Zhang, Laijin Tian
Three new ethyltin complexes containing ferrocenecarboxylate, Et 2 Sn(OC(O)Fc) 2 ( 1 ), [(Et 2 SnOC(O)Fc) 2 O] 2 ( 2 ), and [EtSn(O)OC(O)Fc] 6 ( 3 ) (Fc = C 5 H 5 FeC 5 H 4 ), have been synthesized by the reaction of diethyltin dichloride with ferrocenecarboxylic acid in the presence of potassium hydroxide and characterized by means of elemental analysis, FT-IR, NMR spectroscopy, and X-ray single crystal
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Tetradentate organophosphines in Pt(η4–A4L) (A = P4, P3Si, P2X2 (X2 = N2, S2, C2), PX3 (X3 = N3, N2O)): Structural aspects Main Group Metal Chem. (IF 1.8) Pub Date : 2021-11-26 Milan Melník, Peter Mikuš
We report herein structural characterization of monomeric platinum complexes of the composition: Pt(η4–P4L), Pt(η4–P3SiL), Pt(η4–P2N2L), Pt(η4–P2S2L), Pt(η4–P2C2L), Pt(η4–PN3L), and Pt(η4–PN2OL). The tetradentate ligands with 10-, 11-, 12-, 14-, and 16-membered macrocycles create a variety of chelate bond angles. A distorted square-planar geometry about Pt(II) atoms with cis–configuration by far prevail
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Coordination behavior of PPh2{C6H4[CH2N(CH2CH2)2O]-2}: Case study CdCl2[PPh2{C6H4[CH2N(CH2CH2)2O]-2}] Main Group Metal Chem. (IF 1.8) Pub Date : 2021-11-09 Ancuța Covaci, Cristian Silvestru, Anca Silvestru
The reaction between CdCl2 and PPh2{C6H4 [CH2N(CH2CH2)2O]-2} (1) in a 1:1 molar ratio resulted in the cadmium(II) complex CdCl2[PPh2{C6H4[CH2N(CH2CH2)2O]-2}] (2). The complex 2 was characterized in solution by NMR spectroscopy (1H, 13C, and 31P). Single-crystal X-ray diffraction studies revealed no intramolecular N→P interaction in 1. The phosphane ligand behaves as a P,N chelating moiety in the cadmium
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Editorial: Topological investigations of chemical networks Main Group Metal Chem. (IF 1.8) Pub Date : 2021-11-09 Muhammad Javaid, Muhammad Imran
The topic of computing the topological indices (TIs) being a graph-theoretic modeling of the networks or discrete structures has become an important area of research nowadays because of its immense applications in various branches of the applied sciences. TIs have played a vital role in mathematical chemistry since the pioneering work of famous chemist Harry Wiener in 1947. However, in recent years
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New horizons for the synthesis of nanoparticles: Germanium nanoparticles from metastable GeBr-solutions Main Group Metal Chem. (IF 1.8) Pub Date : 2021-10-12 Viktoriia Slynchuk, Martin Hodas, Dominik Naglav-Hansen, Frank Schreiber, Andreas Schnepf
We present the synthesis and characterization of halide-terminated colloidal Ge nanoparticles of 2–10 nm with a narrow size distribution, synthesized via a novel reaction route. The nanoparticles are prepared by the disproportionation reaction of metastable Ge(I)X solutions and are obtained in a maximum yield of 79%. Control of the nanoparticle size is achieved by varying the aging time and/or temperature
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X-ray crystal structures of carbonate and hydroxide bridged MnII/MgII heterobimetallic complexes formed by reduction of CO2 or H2O by a Mn0–MgII bonded compound Main Group Metal Chem. (IF 1.8) Pub Date : 2021-10-11 Jamie Hicks, Martin Juckel, Cameron Jones
The previously reported Mn0–MgII bonded heterobimetallic compound [L†Mn–Mg(MesNacnac)] (L† = −N(Ar†)(SiPri 3), Ar† = C6H2{C(H)Ph2}2Pri-2,6,4; MesNacnac = [(MesNCMe)2CH]−; Mes = mesityl) forms an adduct complex, [L†Mn–Mg(THF)(MesNacnac)], when dissolved in THF. Adventitious water is shown to be reduced by [L†Mn–Mg(MesNacnac)] to give the hydroxide bridged heterobimetallic, [L†Mn(μ-OH)2Mg(MesNacnac)]
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Synthesis and antimalarial activity of some triphenyltin(IV) aminobenzoate compounds against Plasmodium falciparum Main Group Metal Chem. (IF 1.8) Pub Date : 2021-10-02 Sutopo Hadi, Mona Dwi Fenska, Noviany Noviany, Heri Satria, Wasinton Simanjuntak, Muhammad Moazzam Naseer
This paper presents antimalarial activity of several triphenyltin(IV) aminobenzoate compounds synthesized from the reaction of triphenyltin(IV) hydroxide with 2-, 3-, and 4-aminobenzoic acid. The activity of the compounds as anti-malaria agents was evaluated using Plasmodium falciparum, and demonstrated that the compounds have about the same IC50 with that of chloroquine (2×10−3 μg/mL) applied as the
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Synthesis and structural characterization of a novel 2D supramolecular lead coordination polymer with phenanthroline derivate and adipic acid Main Group Metal Chem. (IF 1.8) Pub Date : 2021-09-28 Yu Song, Yu Yan, Hua Zhang, Xiuyan Wang
A new metal-organic coordination polymer, [Pb(L)(adip)0.5] (1) was synthesized under hydrothermal conditions by using 1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol (HL) and adipic acid (H2adip). The complex 1 was characterized by diffraction and elemental analyses. In complex 1, the binuclear [Pb2L2] units were formed by the OH-deprotonation bridging neighboring Pb(II) atoms, and the
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Syntheses and molecular structures of some di(amidino)monosilanes Main Group Metal Chem. (IF 1.8) Pub Date : 2021-09-02 Markus Bös, Marcus Herbig, Uwe Böhme, Edwin Kroke
The syntheses of three different amidinosilanes of the type Me2Si[N=C(Ph)R]2 with R = pyrrolidino, morpholino, and diethylamino and one derivative with the composition R2Si[N=C(Ph)R]2 with R = morpholino are reported. These compounds were prepared in one-pot syntheses including three consecutive steps. All products are analysed by single crystal X-ray diffraction, NMR, and Raman spectroscopy. The Si–N=C–N
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Some topological properties of uniform subdivision of Sierpiński graphs Main Group Metal Chem. (IF 1.8) Pub Date : 2021-07-27 Jia-Bao Liu, Hafiz Muhammad Afzal Siddiqui, Muhammad Faisal Nadeem, Muhammad Ahsan Binyamin
Sierpiński graphs are family of fractal nature graphs having applications in mathematics of Tower of Hanoi, topology, computer science, and many more diverse areas of science and technology. This family of graphs can be generated by taking certain number of copies of the same basic graph. A topological index is the number which shows some basic properties of the chemical structures. This article deals
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Fabrication, characterization, and photocatalytic performance of ternary cadmium chalcogenides CdIn2S4 and Cd7.23Zn2.77S10-ZnS thin films Main Group Metal Chem. (IF 1.8) Pub Date : 2021-04-20 Umar Daraz, Tariq Mahmood Ansari, Shafique Ahmad Arain, Muhammad Adil Mansoor, Muhammad Mazhar, Fayyaz Hussain
Dithiocarbamate complexes [Cd(S 2 CNCy 2 ) 2 (py)] (1) , [In(S 2 CNCy 2 ) 3 ]·2py (2) and [Zn(S2CNCy 2 ) 2 (py)] (3) were synthesized and toluene solution of (1) and (2) was used as dual source precursor for the synthesis of CdIn 2 S 4 (CIS), while that of (1) and (3) was applied for the deposition of Cd 7.23 Zn 2.77 S 10 –ZnS composite (CZS-ZS) thin film photoan-odes by employing single step aerosol
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Eccentricity based topological indices of face centered cubic lattice FCC(n) Main Group Metal Chem. (IF 1.8) Pub Date : 2021-04-20 Hani Shaker, Muhammad Imran, Wasim Sajjad
Chemical graph theory has become a prime gadget for mathematical chemistry due to its wide range of graph theoretical applications for solving molecular problems. A numerical quantity is named as topological index which explains the topological characteristics of a chemical graph. Recently face centered cubic lattice FCC ( n ) attracted large attention due to its prominent and distinguished properties
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Synthesis and structure of [2-((L)-menthoxycarbonyl)ethyl]diphenyltin halides Main Group Metal Chem. (IF 1.8) Pub Date : 2021-02-28 Qingtao Liu, Xiaowen Shi, Changfa Zhang, Laijin Tian
Two [2-((L)-menthoxycarbonyl)ethyl]diphenyltin halides, (L)-MenOCOCH2CH2SnXPh2 (X=Cl, 1; I, 2), have been synthesized and characterized by means of elemental analysis, FT-IR, NMR (1H, 13C, and 119Sn) spectroscopy, and X-ray single crystal diffraction. The tin atoms in 1 and 2 are both five-coordinated and possess the [C3SnOX] (X=Cl and I) trigonal bipyramidal environment with the trigonal plane defined
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Determination of essential and non-essential element contents of drinking water and baby water for infant’s nutrition Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Funda Demir, Meral Yildirim Ozen, Emek Moroydor Derun
In this study, essential (Ca, Cr, Cu, Fe, K, Mg, Na, P, Zn), and non-essential (Al, Ni, Pb) element contents of the drinking and baby water samples which are sold in the local market and tap water samples in Istanbul were examined. It was determined that elements of Cr, Cu, Fe, P, Zn, Al, and Ni were below detection limits in all water samples. Among the non-essential elements analyzed in water samples
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Organotin(IV) selenate derivatives – Crystal structure of [{(Ph3Sn)2SeO4} ⋅ CH3OH]n Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Waly Diallo, Hélène Cattey, Laurent Plasseraud
Crystallization of [(Ph 3 Sn) 2 SeO 4 ] ⋅ 1.5H 2 O in methanol leads to the formation of [{(Ph 3 Sn) 2 SeO 4 } ⋅ CH 3 OH] n ( 1 ) which constitutes a new specimen of organotin(IV) selenate derivatives. In the solid state, complex 1 is arranged in polymeric zig-zag chains, composed of alternating Ph 3 Sn and SeO 4 groups. In addition, pendant Ph 3 Sn ⋅ CH 3 OH moieties are branched along chains according
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On vertex PI index of certain triangular tessellation networks Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Syed Ahtsham Ul Haq Bokhary, Adnan
The Wiener index, due to its many applications is considered to be one of very important distance-based index. But the Padmaker-Ivan (PI) index is kind of the only distance related index linked to parallelism of edges. The PI index like other distance related indices has great disseminating power. The index was firstly investigated by Khadikar et al. (2001), they have probed the chemical applications
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Hosoya properties of the commuting graph associated with the group of symmetries Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Ghulam Abbas, Anam Rani, Muhammad Salman, Tahira Noreen, Usman Ali
A vast amount of information about distance based graph invariants is contained in the Hosoya polynomial. Such an information is helpful to determine well-known distance based molecular descriptors. The Hosoya index or Z -index of a graph G is the total number of its matching. The Hosoya index is a prominent example of topological indices, which are of great interest in combinatorial chemistry, and
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On topological properties of hierarchical hypercube network based on Ve and Ev degree Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Nida Zahra, Muhammad Ibrahim
Grid implementation is a principal unit in electrical and electronic engineering but it depends on the domain of these projects. For example, depending on the grid and the signal processing in that fields of electronic and electrical engineering, such as more abstract mathematics in signal conversion and e-transmission theory griding, etc. Provides transmission through grid nodes. Graph theory is very
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Synthesis and crystal structure of one new Pb(II) complex constructed by 1,10-phenanthroline and two carboxylate ligands Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Lu-Lin Zhang, Shi-Li Tang, De-Jun Li, Yuan-Zheng Cheng, Li-Ping Zhang
The complex [Pb(phen)(4-NB)(CH 3 COO)] of lead(II) was prepared and characterized by means of elemental analysis, FT-IR, and single crystal X-ray analysis, where phen = 1,10-phenanthroline, 4-NB = 4-nitrobenzoate. The single crystal X-ray analysis indicates that the complex is a monomeric species, including two carboxylate ligands, and adopts a hemidirected structure. It is further extended by intermolecular
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On analysis of thermodynamic properties of cuboctahedral bi-metallic structure Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Muhammad Kamran Siddiqui, Yu-Ming Chu, Muhammad Nasir, Murat Cancan
Porous materials, for example, metalnatural structures (MOFs) and their discrete partners metalnatural polyhedra (MOPs), that are built from coordinatively unsaturated inorganic hubs show incredible potential for application in gas adsorption/partition cycles, catalysis, and arising openings in hardware, optics, detecting, and biotechnology. A well-known hetero-bimetallic metalorganic polyhedra of
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M-polynomial-based topological indices of metal-organic networks Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Agha Kashif, Sumaira Aftab, Muhammad Javaid, Hafiz Muhammad Awais
Topological index (TI) is a numerical invariant that helps to understand the natural relationship of the physicochemical properties of a compound in its primary structure. George Polya introduced the idea of counting polynomials in chemical graph theory and Winer made the use of TI in chemical compounds working on the paraffin's boiling point. The literature of the topological indices and counting
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Two modified Zagreb indices for random structures Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Siman Li, Li Shi, Wei Gao
Random structure plays an important role in the composition of compounds, and topological index is an important index to measure indirectly the properties of compounds. The Zagreb indices and its revised versions (or redefined versions) are frequently used chemical topological indices, which provide the theoretical basis for the determination of various physical-chemical properties of compounds. This
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Some degree-based topological indices of caboxy-terminated dendritic macromolecule Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Yongsheng Rao, Ammarah Kanwal, Riffat Abbas, Saima Noureen, Asfand Fahad, Muhammad Imran Qureshi
In the modern era of the chemical science, the chemical graph theory has contributed significantly to exploring the properties of the chemical compounds. Currently, the computation of the topological indices is one of the most active directions of the research in the area of the chemical graph theory. The main feature of the study of the topological indices is its its ability of predicting the various
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Molecular topological invariants of certain chemical networks Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Syed Ahtsham Ul Haq Bokhary, Muhammad Imran, Shehnaz Akhter, Sadia Manzoor
Topological descriptors are the graph invariants that are used to explore the molecular topology of the molecular/chemical graphs. In QSAR/QSPR research, physico-chemical characteristics and topological invariants including Randić, atom-bond connectivity, and geometric arithmetic invariants are utilized to corelate and estimate the structure relationship and bioactivity of certain chemical compounds
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On topological descriptors of ceria oxide and their applications Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Muhammad Kamran Siddiqui, Yu-Ming Chu, Muhammad Nasir, Muhammad Faisal Nadeem, Muhammad Farhan Hanif
A topological descriptor is a mathematical illustration of a molecular construction that relates particular physicochemical properties of primary molecular structure as well its mathematical depiction. Topological co-indices are usually applied for quantitative structure actions relationships (QSAR) and quantitative structures property relationships (QSPR). Topological co-indices are topological descriptors
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Fractional metric dimension of metal-organic frameworks Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Mohsin Raza, Muhammad Javaid, Naeem Saleem
Metal-organic frameworks (MOF(n)) are organic-inorganic hybrid crystalline porous materials that consist of a regular array of positively charged metal ions surrounded by organic ‘linker’ molecules. The metal ions form nodes that bind the arms of the linkers together to form a repeating, cage-like structure. Moreover, in a chemical structure or molecular graph, edges and vertices are known as bonds
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New cyclic and spirocyclic aminosilanes Main Group Metal Chem. (IF 1.8) Pub Date : 2021-01-01 Marcus Herbig, Henrik Scholz, Uwe Böhme, Betty Günther, Lia Gevorgyan, Daniela Gerlach, Jörg Wagler, Sandra Schwarzer, Edwin Kroke
New cyclic and spirocyclic aminosilanes were synthesised using ethylenediamine, 2-aminobenzylamine, 1,8-diaminonaphthalene, o-phenylenediamine, and trans -cyclohexane-1,2-diamine as starting material. These diamines were converted into aminosilanes using silicon tetrachloride and dimethyldichlorosilane directly and via the N,N’ -bis(trimethylsilylated) amino derivatives. 15 new compounds of the type
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Computing entire Zagreb indices of some dendrimer structures Main Group Metal Chem. (IF 1.8) Pub Date : 2020-12-31 Wei Gao, Zahid Iqbal, Abdul Jaleel, Adnan Aslam, Muhammad Ishaq, Muhammad Aamir
Abstract Topological indices are numerical numbers associated to molecular graphs and are invariant of a graph. In QSAR/QSPR study, Zagreb indices are used to explain the different properties of chemical compounds at the molecular level mathematically. They have been studied extensively due to their ease of calculation and numerous applications in place of the existing chemical methods which needed
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On multiplicative degree based topological indices for planar octahedron networks Main Group Metal Chem. (IF 1.8) Pub Date : 2020-12-31 Ghulam Dustigeer, Haidar Ali, Muhammad Imran Khan, Yu-Ming Chu
Abstract Chemical graph theory is a branch of graph theory in which a chemical compound is presented with a simple graph called a molecular graph. There are atomic bonds in the chemistry of the chemical atomic graph and edges. The graph is connected when there is at least one connection between its vertices. The number that describes the topology of the graph is called the topological index. Cheminformatics
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On topological aspects of degree based entropy for two carbon nanosheets Main Group Metal Chem. (IF 1.8) Pub Date : 2020-12-31 Shazia Manzoor, Yu-Ming Chu, Muhammad Kamran Siddiqui, Sarfraz Ahmad
Abstract The entropy-based procedures from the configuration of chemical graphs and multifaceted networks, several graph properties have been utilized. For computing, the organizational evidence of organic graphs and multifaceted networks, the graph entropies have converted the information-theoretic magnitudes. The graph entropy portion has attracted the research community due to its potential application
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A new 2D dibutyltin coordination polymer with 3,5-dinitrosalicylate and 4,4’-bipyridine ligands Main Group Metal Chem. (IF 1.8) Pub Date : 2020-11-27 Laijin Tian, Ruili Wang, Jiawei Zhang, Qingtao Liu
Abstract A new 2D dibutyltin coordination polymer with 3,5-dinitrosalicylate and 4,4’-bipyridine ligands, [{Bu2Sn(3,5–(NO2)2–2–OC6H2COO)}2(4,4’-bpy)]n (1), has been synthesized and characterized both spectroscopically (IR, 1H, 13C, and 119Sn NMR) and a single-crystal X-ray diffraction analysis. The coordination geometry of tin atom in 1 is a distorted octahedron. 3,5-Dinitrosalicylate as doubly charged
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Magnetically recoverable nanostructured Pd complex of dendrimeric type ligand on the MCM-41: Preparation, characterization and catalytic activity in the Heck reaction Main Group Metal Chem. (IF 1.8) Pub Date : 2020-11-04 Mohammad Abdollahi-Alibeik, Najmeh Gharibpour, Zahra Ramazani
Abstract A palladium complex of a dendrimer type ligand of aminoethylacrylamide immobilized onto the mesoporous channels of MCM-41 with magnetic core was prepared and characterized using various techniques such as XRD, TEM, BET, FT-IR, TGA, and VSM. The prepared nanostructured material was found as a magnetically recoverable catalyst for Heck reaction of aryl halides and vinylic C–H. The catalyst is
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fac-Bis(phenoxatellurine) tricarbonyl manganese(I) bromide Main Group Metal Chem. (IF 1.8) Pub Date : 2020-10-24 Farzin Mostaghimi, Enno Lork, Jens Beckmann
Abstract The reaction of (CO)5MnBr with phenoxatellurine (PT) provided the octahedral complex fac-(CO)3(PT)2MnBr in which the two PT ligands are situated in cis-position.
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Occupational exposure in lead and zinc mines induces oxidative stress in miners lymphocytes: Role of mitochondrial/lysosomal damage Main Group Metal Chem. (IF 1.8) Pub Date : 2020-10-07 Enayatollah Seydi, Mahshid Soltani, Maral Ramazani, Mohammad Hadi Zarei, Jalal Pourahmad
Abstract The purpose of this research was to determine mitochondrial and lysosomal damage and oxidative stress status in blood lymphocytes of lead-zinc miners. This research was performed in 10 mine workers who have been in contact with lead and zinc in comparison to a control group containing 10 healthy volunteers. Lymphocytes were isolated from peripheral blood using the Ficoll standard method and
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Eccentric topological properties of a graph associated to a finite dimensional vector space Main Group Metal Chem. (IF 1.8) Pub Date : 2020-10-06 Jia-Bao Liu, Imran Khalid, Mohammad Tariq Rahim, Masood Ur Rehman, Faisal Ali, Muhammad Salman
Abstract A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism. Eccentricity based topological indices are of great importance and play a vital role in chemical graph theory. In this article, we consider a graph (non-zero component
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Reduction of a 1,4-diazabutadiene and 2,2’-bipyridine using magnesium(I) compounds Main Group Metal Chem. (IF 1.8) Pub Date : 2020-10-01 K. Yuvaraj, Cameron Jones
Abstract β-diketiminate coordinated magnesium(I) compounds, [{(ArNacnac)Mg}2] (ArNacnac = [(ArNCMe)2CH]– (Ar = 2,6-diisopropylphenyl (Dip) or mesityl (Mes)), have been utilized as reducing agents in reactions with the redox active 1,4-diazabutadiene, (ButNCH)2 (ButDAB), and 2,2’-bipyrine (bipy). These reactions led to one-electron reductions of the unsaturated substrate, and formation of the highly
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Ultrasound-promoted solvent-free synthesis of some new α-aminophosphonates as potential antioxidants Main Group Metal Chem. (IF 1.8) Pub Date : 2020-08-28 Meson Haji Basha, Chennamasetty Subramanyam, Kammela Prasada Rao
Abstract Ultrasonic irradiation has been adopted in order to achieve an efficient synthesis of some novel α-aminophosphonates by Pudovik reaction. Major benefits of this method are as follows: eco-friendly, free of catalyst, high yielding, uncomplicated work-up procedure, short reaction time, and solvent free condition. Spectral characterisation and elemental analysis of the synthesized samples was
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Synthesis and structural characterization of dialkyltin complexes of N-salicylidene-L-valine Main Group Metal Chem. (IF 1.8) Pub Date : 2020-08-21 Laijin Tian, Ruili Wang, Jiawei Zhang, Fubi Zhong, Yulin Qiu
Abstract The synthesis and characterization of five new chiral dialkyltin complexes of N-salicylidene-L-valine, [2-O-3-R-5-R'C6H2C(H)=NCH(CH(CH3)2)C(O)O]SnR''2 (R, R', R'' = H, H, Me (1); H, Br, Me (2); OMe, H, Et (3); Br, Br, n-Bu (4); CH(OMe)2, Me, n-Bu (5)), have been reported. Compounds 1-5 are all (S)-enantiomers, and their crystal structures have been studied. Compound 1 displays a trimeric macrocyclic
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Organodiphosphines in PtP2X2 (X = As, Ge or Te) derivatives – Structural aspects Main Group Metal Chem. (IF 1.8) Pub Date : 2020-08-11 Milan Melník, Peter Mikuš
Abstract Structural data of cis-Pt(η2-P2L)(XL)2 (X = Ge or Te), cis-Pt(η2-P2L)(η2-X2L) (X = As, Ge or Te) and trans-Pt(η2-P,TeL)2 were classified and analyzed. The chelating ligands create varieties of metallocyclic rings, which open in the sequence: 83.1° (GeGeGe) < 83.8° (AsC2As) < 86.2° (PC2P) < 88.5° (PC2Te) < 89.7° (PC3P) ~ 89.7° (GeGe2Ge). The structural data are compared and discussed with the
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Abnormally aggregation-induced emissions observed from hydrogen- and silyl-substituted siloles Main Group Metal Chem. (IF 1.8) Pub Date : 2020-08-11 Zhengang Han, Kefeng Xie
Abstract Silacyclopentadienes (siloles) are currently of great interest because of their intriguing aggregation-induced emission (AIE) characteristics. In this work, abnormally AIE phenomena were observed from silyl- and hydrogen-substituted siloles respectively. We propose silyl-substituent and hydrogen atom effects to explain this via both experiments and theoretical calculations. It was discovered
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Synthesis of pyrimidines by Fe3O4@SiO2-L-proline nanoparticles Main Group Metal Chem. (IF 1.8) Pub Date : 2020-07-29 Javad Safaei-Ghomi, Zahra Samadi
Abstract Fe3O4@SiO2-L-proline nanoparticles have been used as an effective catalyst for the preparation of pyrimidines by three-component reactions of 1,3-dimethylbarbituric acid, aromatic aldehydes and 4-methyl aniline or 4-methoxy aniline under reflux condition in ethanol. Fe3O4@SiO2-L-proline nanoparticles have been characterized by scanning electronic microscopy (SEM), powder X-ray diffraction
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Structures of Pt(0)P3, Pt(0)P4 and Pt(II)P4 – Distortion isomers Main Group Metal Chem. (IF 1.8) Pub Date : 2020-07-14 Milan Melník, Peter Mikuš
Abstract In this review are analyzed and classified crystallographic and structural parameters of P(0)P3, Pt(0) P4 and Pt(II)P4 derivatives – distortion isomers. Some of the isomers are differing not only by degree of distortion but also by crystal class. There are three types of organo-phosphines which build up the respective geometry about the platinum atoms. In Pt(0)P3 a distorted trigonal planar
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s-Block metal scorpionates – A new sodium hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate salt showing an unusual core stabilized by bridging and terminal O-bonded DMSO ligands Main Group Metal Chem. (IF 1.8) Pub Date : 2020-06-21 Laurent Plasseraud, Hélène Cattey
Abstract Dissolution of [(μ-Me2CO)3(NaTp*)2] (1) (Tp* = hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate) in DMSO at room temperature leads to the growth of colourless crystals characterized as the new salt [Na2Tp*(μ-Me2SO)3(Me2SO)3] [NaTp*2] (2). 2 crystallized in the trigonal space group R3 with Z = 3, a = 14.1227(2) Å, b = 14.1227(10) Å, c = 33.9685(2) Å, and V = 5867.35(17) Å3. Interestingly, anion
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New crystal structures of alkali metal tetrakis(pentafluorophenyl)borates Main Group Metal Chem. (IF 1.8) Pub Date : 2020-06-21 Daniel Duvinage, Artem Schröder, Enno Lork, Jens Beckmann
Abstract The crystal structures of the salts [Li(1,2-F2C6H4)] [B(C6F5)4] (1) and Cs[B(C6F5)4] (2) comprise six Li···F contacts (1.965(3) − 2.312(3) Å) and twelve Cs···F contacts (3.0312(1) − 3.7397(2) Å), respectively, which are significantly shorter than the sum of van der Waals radii (3.29 and 4.90 Å).
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Eccentricity based topological indices of siloxane and POPAM dendrimers Main Group Metal Chem. (IF 1.8) Pub Date : 2020-06-21 Muhammad Azhar Iqbal, Muhammad Imran, Muhammad Asad Zaighum
Abstract A massive of early drug tests indicates that there is some strong inner connections among the bio-medical and pharmacology properties of nanostar dendrimers and their molecular structures. Topological descriptors are presented as fundamentally transforming a molecular graph into a number. There exist various categories of such descriptors particularly those descriptors that based on edge and
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Efficient photocatalytic degradation of organic dye from aqueous solutions over zinc oxide incorporated nanocellulose under visible light irradiation Main Group Metal Chem. (IF 1.8) Pub Date : 2020-06-21 Nahi Jamal, Asha Radhakrishnan, Raveendran Raghavan, Beena Bhaskaran
Abstract Increased growth of textile industries leads to the tremendous accumulation of dyes on water and surrounding environments. This terrific increase of dyes is the major cause of water pollution which in turn adversely affects the aquatic lives and the balance of our ecosystem. Purpose of the present study is to report the synthesis and characterization of a composite namely zinc oxide incorporated
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Preparation of skeletally diverse quinazoline-2,4(1H,3H)-diones using Na2SiO3/SnFe2O4 catalytic system through a four-component reaction Main Group Metal Chem. (IF 1.8) Pub Date : 2020-05-27 Fazilat Ayambekam, Majid Ghashang
Abstract Sodium silicate with the formula of Na2SiO3 was used for the four-component reaction of ketones, aldehydes and cyanoacetamide. The effect of SnFe2O4 nano-particles on the catalytic potential of Na2SiO3 was investigated. The desired products synthesized by this method are 5-amino-7-aryl-2,4-dioxo-2,3,4,4a,7,7a,8,9,10,11-decahydro-1H-benzo[i]quinazoline-6-carbonitriles, 5-amino-2,4-dioxo-7-aryl-1
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Topological properties of metal-organic frameworks Main Group Metal Chem. (IF 1.8) Pub Date : 2020-05-27 Hafiz Muhammad Awais, Muhammad Jamal, Muhammad Javaid
Abstract Metal-organic frameworks (MOFs) are porous materials formed by strong bonds between metal ions and organic ligands to represent very high surface area, large pore volume, excellent chemical stability and unique morphology. Work on synthesis, structures and characteristics of many MOFs shows the importance of these frameworks with versatile applications, such as energy storage devices of excellent
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Modified Zagreb connection indices of the T-sum graphs Main Group Metal Chem. (IF 1.8) Pub Date : 2020-05-01 Usman Ali, Muhammad Javaid, Agha Kashif
Abstract The quantitative structures activity relationships (QSAR) and quantitative structures property relationships (QSPR) between the chemical compounds are studied with the help of topological indices (TI’s) which are the fixed real numbers directly linked with the molecular graphs. Gutman and Trinajstic (1972) defined the first degree based TI to measure the total π-electrone energy of a molecular
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Assessment of content and chemical forms of arsenic, copper, lead, and chromium in sewage sludge compost as affected by various bulking agents Main Group Metal Chem. (IF 1.8) Pub Date : 2020-04-29 Mahboub Saffari, Vahid Reza Saffari, Hojatollah Khabazzadeh, Hormazd Naghavi
Abstract In current study, the effect of various organic substances as bulking agents (BAs) including wheat straw, pistachio hull wastes, and tree leaves at different levels (10, 25, 45% v/v) were investigated on total concentration and chemical forms of Cu, Pb, Cr, and As in sewage sludge (SS) compost prepared by windrow method. According to the results, the composting process (with/without BAs),
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Green synthesis and characterization of hexaferrite strontium-perovskite strontium photocatalyst nanocomposites Main Group Metal Chem. (IF 1.8) Pub Date : 2020-04-29 Zahra Hajian Karahroudi, Kambiz Hedayati, Mojtaba Goodarzi
Abstract This study presents a preparation of SrFe12O19– SrTiO3 nanocomposite synthesis via the green auto-combustion method. At first, SrFe12O19 nanoparticles were synthesized as a core and then, SrTiO3 nanoparticles were prepared as a shell for it to manufacture SrFe12O19–SrTiO3 nanocomposite. A novel sol-gel auto-combustion green synthesis method has been used with lemon juice as a capping agent
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A new approach on lithium-induced neurotoxicity using rat neuronal cortical culture: Involvement of oxidative stress and lysosomal/mitochondrial toxic Cross-Talk Main Group Metal Chem. (IF 1.8) Pub Date : 2020-04-29 Bahareh Sadat Yousefsani, Romina Askian, Jalal Pourahmad
Abstract Lithium (Li) is a widely-used medication for the treatment of patients with bipolar disorder. Li causes different complications. One of the most important adverse effects of Li is neurotoxicity. Neurotoxicity is usually irreversible which may lead to very important complications. The symptoms of Li-induced neurotoxicity include tremor, delirium, seizures, coma, and death. In this study, we
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An accelerated and effective synthesis of zinc borate from zinc sulfate using sonochemistry Main Group Metal Chem. (IF 1.8) Pub Date : 2020-04-15 Ali Can Ersan, Azmi Seyhun Kipcak, Meral Yildirim Ozen, Nurcan Tugrul
Abstract Recently, sonochemistry has been used for the synthesis of inorganic compounds, such as zinc borates. In this study using zinc sulphate heptahydrate (ZnSO4·7H2O) and boric acid (H3BO3) as starting materials, a zinc borate compound in the form of Zn3B6O12·3.5H2O was synthesized using an ultrasonic probe. Product’s characterization was carried out with using X-ray diffraction (XRD), Scanning
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The crystal structure of the first ether solvate of hexaphenyldistannane [(Ph3Sn)2 • 2 THF] Main Group Metal Chem. (IF 1.8) Pub Date : 2020-01-31 Jonathan O. Bauer
Abstract Structural investigations of molecular crystal solvates can provide important information for the targeted crystallization of particular inclusion compounds. Here, the crystal structure of the first ether solvate of hexaphenyldistannane [(Ph3Sn)2 • 2 THF] is reported. Structural features in terms of host-guest interactions and in the context of the previously reported polymorphs and solvates