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Development of a new magnetic nanogel based on a copolymer of polyacrylic acid-co-acrylamide-co-β-cyclodextrin for extraction/pre-concentration of doxorubicin from biological samples J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2020-09-19 Sima Alvani-Alamdari, Sanaz Sajedi-Amin, Roya Salehi, Elaheh Rahimpour, Abdolhossein Naseri
In this study, a new magnetic nanogel was synthesized for the extraction/pre-concentration of doxorubicin (DOX) from biological samples. The synthesized nano-sorbent was used for the pre-concentration and extraction of DOX prior to spectrophotometry determination. The influence of the main variables, including pH, sorption time, adsorbent amount, and NaCl content, was investigated and optimized by
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The history of organoplatinum chemistry in Iran: 40-year research J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2020-08-17 Reza Babadi Aghakhanpour, Sareh Paziresh, S. Masoud Nabavizadeh, S. Jafar Hoseini, Fatemeh Niroomand Hosseini
This review article is based on the scientific investigations of Prof. Mehdi Rashidi during his working years in Shiraz University, Chemistry Department, Organometallic Chemistry Laboratory. Herein, we tried to overlook 40 years of his researches and intend to briefly point out all his publications during his research years. Prof. Rashidi’s researches were mostly focused on the synthesis and characterization
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Synthesis, characterization, crystal structures, and solution studies of Ni(II), Cu(II) and Zn(II) complexes obtained from pyridine-2,6-dicarboxylic acid and 2,9-Dimethyl-1,10-Phenanthroline J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Aghabozorg; E. Sadr-khanlou; A. Shokrollahi; M. Ghaedi; M. Shamsipur
The homonuclear water-soluble and air stable compounds (dmpH) (H5O2) au][M(pydc)2].0.5H2O (M = Ni(II) (1), Cu(II) (2), Zn(II) (3); pydcH2 = pyridine-2,6-dicarboxylic acid, dipicolinic acid, dmp = 2,9-dimethyl-1,10-phenanthroline) have been prepared by self-assembly synthesis in aqueous solution at room temperature, and characterized by IR, 1H NMR, 13C NMR, elemental analysis and X-ray diffraction single
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Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. M. Heravi; S. Sadjadi
Heteropolyacids, their salts and polyoxometalates have been used as catalysts in wide range of organic reactions such as multi components, oxidation, reductions, electrochemical and photochemical reactions. There have been tremendous and continued efforts to modify the catalytic performance of heteropoly acids such as supporting them on MCM, silica gel, etc. In this review, we have attempted to bring
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FT-IR, FT-raman and SERS spectra of L-proline J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 Y. Sheena Mary; L. Ushakumari; B. Harikumar; H. Tresa Varghese; C. Yohannan Panicker
IR, Raman and surface-enhanced Raman scattering (SERS) spectra of L-proline were recorded and analyzed. The molecular plane assumes a tilted orientation with respect to the metal surface. The vibrational wavenumbers and corresponding vibrational assignments are examined theoretically using the Gaussian 03 set of quantum chemistry codes.
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Cathodic stripping voltammetry of pipemidic acid and ofloxacin in pharmaceutical dosages and human urine J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. R. Solangi; A. Mallah; M. Y. Khuhawar; M. I. Bhanger
Sensitive cathodic stripping voltammetric methods have been developed for two quinolone antibacterial drugs, pipemidic acid (PIP) and ofloxacin (OFL) using hanging mercury drop electrode as working electrode vs. Ag/AgCl reference electrode. The methods were developed for the determination of drugs individually as well as simultaneously. 0.1 M and 0.01 M hydrochloric acid was used as medium for PIP
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Study of hydrazone-Hydrazoimine tautomerism in α-Azo-6-ketomethylphenanthridines J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Loghmani-Khouzani; H. Mehrabi; M. M. M. Sadeghi; R. Gawinecki
AB Azo-coupling of a series of 6-ketomethylphenanthridines products was performed starting from 6- ketomethylphenanthridines and benzene diazonium chloride. The products were characterised using 1H, 13C and 15N NMR, IR, UV and MS spectroscopic methods. The hydrazoimine forms were the only tautomer present in chloroform solution. Two rotamers were detected in chloroform solutions of the compounds studied
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Electrocatalytic determination of hydroquinone with M n+ modified gold-5-amino-2-mercaptobenzimidazole self-assembled monolayer electrodes J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. Karimi Shervedani; F. Yaghoobi; M. Bagherzadeh
Application of immobilized metal cations on the topside of gold-5-amino-2-mercaptobenzimidazole self-assembled monolayer (Au-5A2MBI-Mn+ SAM, Mn+:Cu2+ or Ag+) for electrocatalytic determination of hydroquinone (H2Q) is described by voltammetric method. Several parameters were investigated to evaluate the performance of the sensors. Calibration curves for H2Q concentrations were linear from 1.0 × 10-5
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Heteroatom effect at C 7 of norbornadiene-Quadricyclane system for maximizing the solar energy storage: DFT calculations J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 E. Vessally
An attempt is made to maximize the solar energy storage in norbornadiene (1)/quadricyclane (2) system, through exchanging of heteroatoms at C7 of 1 and 2; calculating the corresponding energies at MP2/6-311++G(3df,2p)//B3LYP/6-311++G(3df,2p) and B3LYP/6-311++G** levels of theory. Free energy gaps between 1 X and 2 X, δG(1x)-(2x), and solar energy storage is the most for 1 Se, 1 As and 1 Al from group
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Waste-free thiolysis of epoxide in water with high yield J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 N. Azizi; E. Akbari; M. R. Saidi
An environmentally benign and efficient process for the preparation of β-hydroxysulfides was developed by a practical and simple reaction of thiols with epoxides in water catalyzed by K2CO3 in high yields and short reaction times.
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Using acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate in selective nitration of phenols under mild conditions J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Tajik; K. Niknam; F. Parsa
Selective nitration of phenols with sodium nitrate was carried out in the presence of acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate at room temperature in good to high yields and short reaction times. The use of inexpensive and relatively non toxic acidic reagent is an advantage of this method.
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Syntheses and antibacterial studies of some 2-[5-(Aryl)-[1,3,4]oxadiazole-2-ylsulfanyl] alkanoic Acids J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 N. Jain; D. P. Pathak; P. Mishra; S. Jain
Some new 2-[5-(aryl)-[1,3,4]oxadiazole-2-ylsulfanyl]alkanoic acids were synthesized and studied for their antibacterial activity. These compounds were prepared from aromatic carboxylic acid hydrazides. Aromatic carboxylic acid hydrazides 1 on refluxing with carbon disulfide and methanolic potassium hydroxide and then on subsequent acidification with hydrochloric acid furnish 5-aryl-1,3,4-oxadiazole-2-thiones
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Kinetic determination of trace amounts of thiosulfate based on its inhibitory effect J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. K. Tiwari; R. M. Naik; P. K. Singh; S. B. S. Yadav; R. Rastogi; J. Rai
The sulfur containing ligand viz., thiosulfate is found to inhibit the Ag(I) catalyzed substitution of cyanide in hexacyanoferrate(II) by phenylhydrazine. The inhibitory effect of thiosulfate is attributed due to its tendency to form complexes with Ag(I), leading to the production of inhibitor-catalyst complexes. The reactions, followed spectrophotometrically in aqueous medium at 488 nm, was possible
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Micellar media catalyzed highly efficient reductive amination of carbonyl compounds with bis(triphenylphosphine)(tetrahydroborato)zirconium(II), [Zr(BH 4 ) 2 (Ph 3 P) 2 ], as a new and a highly water tolerant tetrahydroborate reducing agent J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Firouzabadi; N. Iranpoor; H. Alinezhad
Micellar media under neutral conditions catalyzed successful reductive amination of aldehydes and ketones by bis(triphenylphosphine)(tetrahydroborato)zirconium(II), [Zr(BH4)2(Ph3P)2], as a newly developed hydride transfer agent and a highly water tolerant tetrahydroborate reagent.
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A Kinetic spectrophotometric method for determination of amlodipine and Nifedipine in pharmaceutical preparations J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 B. Hemmateenejad; R. Miri; R. Kamali
A simple, accurate, sensitive and economical procedure for the estimation of amlodipine besylate and nifedipine, both in pure and dosage forms, has been developed. The method is based on the reduction of iron(III) by the studied drugs and subsequent interaction of iron(II) with ferricyanide to form Prussian blue. The reaction develops through a slow kinetics and completes in about 10 min. Both initial
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Synthesis of quinoxaline derivatives via condensation of aryl-1,2-diamines with 1,2-Diketones using (NH 4 ) 6 Mo 7 O 24 .4H 2 O as an efficient, mild and reusable catalyst J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. Hasaninejad; A. Zare; M. R. Mohammadizadeh; Z. Karami
Ammonium heptamolybdate tetrahydrate [(NH4)6Mo7O24.4H2O] efficiently catalyzes the condensation of aryl-1,2-diamines with 1,2-diketones in EtOH/H2O as a green media at room temperature to afford quinoxaline derivatives as biologically interesting compounds. Ease of recycling of the catalyst is one of the most advantages of the proposed method.
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Thermal degradation analysis of organotin(IV) esters J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 S. Yaqub; F. Ahmed; Sadiq-ur-Rehman; S. Ali; S. Shahzadi
The di- and tri-organotin(IV) complexes of n-butyl hydrogenphthalate and (Z) 3-(4-nitrophenyl)-2-phenyl-2-propenoate were subjected to thermal decomposition by mean of thermogravimetry (TG). The decomposition occurred in steps and the kinetics of every set of reactions was determined using the method described by Coats and Redfern. These results were analyzed to establish the decomposition kinetics
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DNA-Binding and cytotoxicity of the cobalt(III) ethylenediamine pyrazole complex [Co(en) 2 (pyz) 2 ] 3+ J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 P. Nagababu; J. Naveena lavanya latha; M. Rajesh; S. Satyanarayana
The complex of cobalt(III) ethylenediamine was synthesized, isolated and characterized by UV-Vis, IR, and 1H NMR spectral methods. The binding of the complex with calf thymus DNA was investigated by absorption and emission spectroscopy, viscosity measurements, DNA melting and DNA photocleavage. The spectroscopic studies together with the viscosity measurements and DNA melting studies indicated that
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Synthesis, structure and photoluminescence of [Cu(acac)(dppe)] n with novel 1D zigzag chain-like motif J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 Y.-M. Xie; J.-H. Wu
A novel complex [Cu(acac)(dppe)]n (1) [acac = acetylacetone; dppe = 1,2-bis(diphenylphosphino)ethane] was obtained by solution reactions and structurally characterized by X-ray diffraction. The crystal structure analysis indicates that the title complex is characteristic of a polymeric chain formed by the dppe ligands bridging neighboring copper centers. The copper atom is in a distorted tetrahedral
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Salt addition effect on partition coefficient of some phenolic compounds constituents of olive mill wastewater in 1-octanol-water system at 298.15 K J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. Noubigh; M. Abderrabba; E. Provost
The 1-octanol-water partition coefficient is an important property to measure the hydrophobicity of organic compounds, which has been demonstrated to be a parameter in studying the conformation of biomolecules in aqueous solutions. For biological systems, electrolytes play an important role in thermodynamic properties. The salt addition effect on the distribution of phenolic compounds between water
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Mechanistic investigation of oxidation of glycine and alanine by bis(dihydrogen-tellurto)argentite(III) ion in alkaline medium. A kinetic study J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 S. Huo; C. Song; J. Shan; S. Shen; H. Sun
The oxidation of glycine and alanine by bis(dihydrogen-tellurto)argentite(III) ion was studied by stopped-flow spectrophotometery. The reaction is of first order in Ag(III) complex and has less than unit order in glycine and alanine. A plausible mechanism was proposed form the kinetic studies. The rate equations derived from mechanism found to explain all experimental phenomena. The activation parameters
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Synthesis, structure, photoluminescence and theoretical study of (MQ)(CdBr 4 ) with MQ 2+ generated In Situ (MQ 2+ = N -Me-4,4′-bipyridinium) J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 X.-N. Fang; W.-T. Chen; Y.-P. Xu; Q.-Y. Luo; H.-L. Chen
A new compound (MQ)(CdBr4) (1; MQ2+ = N-Me-4,4′-bipyridinium), in which the MQ2+ was generated in situ, has been synthesized via hydrothermal reaction. The title compound features an isolated structure, based on discrete MQ2+ moieties and tetrahedral cadmium atoms terminally coordinated by four bromine atoms. The MQ2+ moieties and tetrabromo-cadmium dianions are linked via hydrogen bonds. Photoluminescent
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Synthesis, physicochemical investigation and biological studies of Zinc(II) complexes with 1,2,4-triazole Schiff bases J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 G. B. Bagihalli; S. A. Patil; P. S. Badami
A series of metal complexes of Zn(II) have been synthesized with newly synthesized biologically active 1,2,4-triazole Schiff bases derived from the condensation of 3-substituted-4-amino-5-mercapto-1,2,4-triazole with 8-formyl-7-hydroxy-4-methylcoumarin. The structure of the complexes has been proposed in the light of elemental analyses, spectroscopic data (IR, UV-Vis, 1H NMR and FAB-mass), thermal
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New adducts of diorganotin(IV) chlorides with a new multifunctional schiff base ligand: Synthesis and spectral properties J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 T. Sedaghat; F. Jalilian
Three novel Schiff base adducts [SnMe2Cl2(Hcdacacen)] (1), [SnBu2Cl2(Hcdacacen)2] (2) and [SnPh2Cl2(Hcdacacen)2] (3) have been synthesized by reaction of SnR2Cl2 (R = Me, Bu and Ph) with a new Schiff base ligand methyl-2-[2-(acetylacetoneimino)ethylamino]-1-cyclopentene-1-dithiocarboxylate (Hcdacacen). The ligand and complexes were characterized by elemental analysis and spectroscopic studies. Spectroscopic
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Enzyme inhibition and activation: A general theory J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. A. Saboury
The rate of an enzymatic reaction may be changed by a moderator. Usually, the effect is to reduce the rate, and this is called inhibition. Sometimes the rate of enzyme reaction is raised, and this is called activation. Not only enzyme activation is subject of a less detailed presentation, but also enzyme inhibition and activation are very often discussed independently in enzymology. I attempt to introduce
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The heat of vaporization and nanocavity formation J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 K. Azizi; A. Nasehzadeh
Two distinct approaches are used to derive a unique and exact analytical expression for the heat of vaporization with respect to the nanocavity energy formation and the molecular hard-core diameter. This expression provides a new method to compare different models of cavity formation in the liquids as well as to predict the effective molecular hard-core diameter at different temperatures and pressures
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Rapid and efficient one-pot synthesis of 1,4-dihydropyridine and polyhydroquinoline derivatives through the Hantzsch four component condensation by zinc oxide J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 F. Matloubi Moghaddam; H. Saeidian; Z. Mirjafary; A. Sadeghi
A one-pot four-component reaction of aldehydes, ethyl acetoacetate/5,5-dimethyl-1,3-cyclohexanedione, ethyl acetoacetate and ammonium acetate in the presence of 10 mol% of ZnO as a heterogeneous catalyst for the synthesis of corresponding 1,4- dihydropyridine and polyhydroquinoline derivatives via the Hantzsch condensation is described. The present methodology offers several advantages such as simple
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Mn(II), Co(II), Ni(II) and Cu(II) complexes of a tertraaza macrocyclic ligand: Synthesis, characterization and biological screening J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 S. Chandra; M. Tyagi; K. Sharma
Manganese(II), cobalt(II), nickel(II) and copper(II) complexes with 1,5,11,15-tetraaza-21,22-dioxo-tricyclo [19,3,1,I6,10]-5,10,15-20-dicosatetraene (L), as a new macrocyclicligand, have been synthesized with and characterized by elemental analysis, molar conductance measurements, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies. The molar conductance measurements
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InCl 3 as an efficient catalyst for synthesis of oxazolines under thermal, ultrasonic and microwave irradiations J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Moghadam; V. Mirkhani; S. Tangestaninejad; I. Mohammadpoor-Baltork; H. Kargar
Efficient synthesis of 2-oxazolines by the reaction of nitriles with β-aminoalcohols using InCl3 as catalyst under reflux conditions is reported. This catalyst can be successfully applied to the chemoselective conversion of dicyanobenzenes to their corresponding mono- and bis-oxazolines. The application of ultrasonic and microwave irradiation improved the yields and reduced the reaction times. Another
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Selective oxidation of benzylic and allylic alcohols with NaOCl/silica gel system J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Alinezhad; M. Tajbakhsh; R. Soleimani
Sodium hypochlorite, a cheap and readily available compound, when supported on silica gel can selectively oxidize benzylic and allylic alcohols to their carbonyl compounds in the presence of catalytic amount of DMSO.
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Solvent extraction of trivalent indium from succinate solution by 2-octylaminopyridine in chloroform J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 S. V. Mahamuni; S. S. Kolekar; P. P. Wadgaonkar; M. A. Anuse
Extraction processes of indium(III) with 2-octylaminopyridine (2-OAP) from media of various complexing ability, succinate and salicylate, in chloroform have been elucidated. The ion-pair complex has also quantitative extraction in xylene and 1,2-dichloroethane. Indium(III) from organic phase was stripped with 1.0 M hydrochloric acid and determined complexometrically with EDTA. The stoichiometry of
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Preparation and characterization of nanosized ZSM-5 zeolite using kaolin and investigation of kaolin content, crystallization time and temperature changes on the size and crystallinity of products J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Khatamian; M. Irani
Nano sized ZSM-5 zeolite samples were synthesized successively from kaolin clay as alumina source having a large amount of quartz (39%) and silicic acid as silica source by hydrothermal treatment with NaOH in the presence of tetrapropylammonium hydroxide as a template. Then the effect of kaolin content, crystallization temperature and time on the size and crystallinity of the products were investigated
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Synthesis, characterization, biological and thermal studies of Cu(II) complexes of salen and tetrahedrosalen ligands J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Khanmohammadi; M. Salehifard; M. H. Abnosi
A series of mononuclear salen type copper(II) complexes, [CuLn] (n = 1–4), and their corresponding tetrahydrosalen complexes, [CuH2Ln] (n = 1,2) were prepared by the reaction of the N2O2 ligands with Cu(II) ion in ethanol, where H2L1 = N,N-bis(3,5-di-tert-butylsalicylidene)-2,2-dimethyle-1,3-diaminopropan, H2L2 = N,N-bis(3,5-di-tert-butylsalicylidene)-1,2-diaminopropane, H2L3 = N,N-bis(4-methoxysalicylidene)-2
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Study of hydrogen bonds in crystalline 5-nitrouracil. Density functional theory calculations of the O-17, N-14, and H-2 nuclear quadrupole resonance parameters J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Mirzaei; N. L. Hadipour
Hydrogen bond interaction properties of backbone uracil was studied in crystalline structure of 5-nitrouracil. To this aim the electric field gradient tensors were calculated at the level of density functional theory in two single (non-hydrogen bonded) and cluster (hydrogen-bonded four-molecule) models of 5-nitrouracil. The electric field gradient tensors at the sites of O-17, N-14, and H-2 nuclei
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Mechanistic investigation of oxidation of metronidazole and tinidazole with N -bromosuccinimide in acid medium: A kinetic approach J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 K. N. Mohana; P. M. Ramdas Bhandarkar
Metronidazole (MTZ) and tinidazole (TNZ) belong to nitroimidazole group of drugs used to treat infections such as ameobiasis, giardiasis and trichomoniasis. The kinetics of oxidation of MTZ and TNZ with N-bromosuccinimide (NBS) in perchloric acid medium has been investigated at 308 K. A 1:1 stoichiometry has been observed in both MTZ and TNZ cases. The oxidation reactions of both MTZ and TNZ follow
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Synthesis and characterization of CeFeO 3 photocatalyst used in photocatalytic bleaching of gentian violet J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 J. Ameta; A. Kumar; R. Ameta; V. K. Sharma; S. C. Ameta
Ternary oxides have been used as effective photocatalyst for carrying out number of chemical reactions. Method of preparation has major effect on the performance of these mixed oxide catalysts. In the present work, cerium iron oxide catalyst was synthesized using co-precipitation method and specific heating cycle. Synthesized catalyst was characterized using X-ray diffraction patterns. Photocatalytic
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P 2 O 5 /SiO 2 as an efficient and recyclable catalyst for N -Acylation of sulfonamides under heterogeneous and solvent-free conditions J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. R. Massah; M. Dabagh; S. Shahidi; H. Javaherian Naghash; A. R. Momeni; H. Aliyan
A convenient synthetic method for N-acylation of sulfonamides in the presence of P2O5/SiO2 is described. Carboxylic acid anhydrides and carboxylic acid chlorides were used as acylating agents and the reactions were carried out in CH2Cl2 or solventfree conditions. The catalyst can be recovered by simple filtration and can be used in the subsequent reactions.
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Kinetics and mechanism of oxidation of aniline and substituted anilines by isoquinolinium bromochromate in aqueous acetic acid J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 S. B. Patwari; S. V. Khansole; Y. B. Vibhute
Oxidation of anilines by isoquinolinium bromochromate (IQBC) in aqueous acetic acid leads to the formation of corresponding azobenzenes. The reaction is first order with respect to both aniline and IQBC and is catalyzed by hydrogen ion. The rate of oxidation decreases with increasing dielectric constant of solvent, indicating the presence of an ion-dipole interaction. The rate of oxidation decreases
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Direct electrochemistry of hemoglobin immobilized in the sodium alginate and SiO 2 nanoparticles bionanocomposite film on a carbon ionic liquid electrode J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 W. Sun; D. Wang; Z. Zhai; R. Gao; K. Jiao
In this paper a carbon ionic liquid electrode (CILE) was fabricated by using a room temperature ionic liquid of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) as binder. By using the CILE as basal electrode, the hemoglobin (Hb) molecule was immobilized on the surface of CILE with a sodium alginate (SA) hydrogel and SiO2 nanoparticles organic-inorganic composite material. The direct electrochemical
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Carmine and Fast Green as Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. A. Prabhu; T. V. Venkatesha; A. V. Shanbhag
The inhibition action of carmine and fast green dyes on corrosion of mild steel in 0.5 M HCl was investigated using mass loss, polarization and electrochemical impedance (EIS) methods at 300 K. The inhibition efficiency was found to increase with increasing concentration of the inhibitors. The inhibition efficiency of fast green (%η - 98) is higher than that of carmine (%η - 92) and found to be maximum
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Kinetics and mechanism of oxidation of 2-Aminoethanol and 3-Amino-1-propanol by diperiodatoargentate(III) in alkaline medium J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Shan; H. Y. Wang; C. Y. Song; F. Wang
The kinetics of oxidation of 2-aminoethanol and 3-amino-1-propanol by diperiodatoargentate(III) (DPA) were carried out spectrophotometrically in alkaline medium in the temperature range of 293.2-308.2 K. The reaction showed first order with respect to [DPA] and each reductant. The observed rate constant (k obs) decreased with the increase of [IO4 -] and increased with the increase of [OH-]. Increasing
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Microwave-assisted solvent-free synthesis of 1,1-diacetates catalyzed by SbCl 3 from aldehydes and acetic anhydride J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. Xu; J. Zhang; Y. Tian; J. Zhou
Microwave-assisted synthesis of a variety of 1,1-diacetates catalyzed by SbCl3 from corresponding aldehydes and acetic anhydride was reported. Only 10 mol% of catalyst was sufficient to push the reaction forward and high amounts of the catalyst did not improve the yields to a great extent. The present protocol offered several advantages including low cost of the catalyst, high yields, short reaction
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Application of a Schiff base derived from sulfanilamide as an acid-base indicator J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. A. Khalil; A. H. Jalil; A. Y. Abd-Alrazzak
The present paper firstly announces the possibility of using a Schiff base as an acid-base indicator. This surprising phenomenon can be considered as an interest due to the fact that Schiff bases are usually unstable in solutions and definitely undergo hydrolysis. It was found that such a specific observation depends merely upon the chemical structure and type of the substitute of amine that reacts
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Removal of COOH, Cd and Pb using water hyacinth: FTIR and flame atomic absorption study J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Ibrahim; A. A. Shaltout; D. E. Atta; A. F. Jalbout; M. Soylak
In the present work both FTIR and Flame AAS were jointly used to investigate the uptake of pollutants by the aquatic plant water hyacinth. The plant was immersed alive in synthetic standard solutions containing acetic acid up to 0.40 M for 19.0 h. Then it was immersed in 0.10 M acetic acid for different periods of time up to 210.0 h. Later on, both the acetic acid treated beside non treated ones was
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QSAR studies on the antiviral compounds of natural origin J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 B. Hemmateenejad; K. Javidnia; M. Nematollahi; M. Elyasi
Two data sets of natural antiviral agents including 107 anti-HIV1 and 18 anti-polio molecules were collected and subjected to quantitative structure-activity relationship (QSAR) analyses. A wide variety of molecular descriptors belonging to various structural properties were calculated for each molecule. Multiple linear regression (MLR) based on stepwise variable selection was employed to find the
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Chromium(III) and Calcium(II) complexes obtained from dipicolinic acid: Synthesis, characterization, X-Ray crystal structure and solution studies J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 Z. Aghajani; H. Aghabozorg; E. Sadr-Khanlou; A. Shokrollahi; S. Derki; M. Shamsipur
The Cr(III) and Ca(II) complexes (dmpH)[Cr(pydc)2]•H2O (1) and [Ca2(pydc)2(H2O)6].2pydcH2 (2) were synthesized by reaction of 2,9-dimethyl-1,10-phenanthroline (dmp) and pyridine-2,6-dicarboxylic acid (pydcH2) with Cr(NO3)3 and Ca(NO3)2, respectively, and characterized using IR spectroscopy, single crystal X-ray diffraction method and solution studies. The space group and crystal system of these two
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Synthesis and antibacterial activity of N -[2-(2-naphthyl)ethyl]piperazinyl quinolones J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. Shafiee; S. Emami; S. Ghodsi; S. Najjari; M. Sorkhi; N. Samadi; M. A. Faramarzi; A. Foroumadi
A series of N-[2-(2-naphthyl)ethyl]piperazinyl quinolones containing a carbonyl related functional groups (oxo- or oxyimino-) on the ethyl spacer was synthesized and evaluated for antibacterial activity. The synthesis of N-[2-(2-naphthyl)ethyl]piperazinyl quinolones was achieved through the versatile and efficient synthetic route that involved reaction of piperazinyl quinolones with appropriate α-bromoketone
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Mechanistic study of homogeneous reactions coupled with electrochemical oxidation of catechols J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 D. Nematollahi; M. Rafiee; L. Fotouhi
The electrochemical oxidation of catechols was described and has shown that these compounds can be oxidized to related o-benzoquinones. The electrochemically generated o-benzoquinones are quite reactive and can be attacked by a variety of nucleophiles under various mechanistic disciplines such as CE, EC, EC′, ECE, ECEC, ECEC 2, ECECE, ECECEC, ECECECE and trimerization, in which E represents an electron
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Preparation of hydroxyapatite nanoparticles: Comparison between hydrothermal and Solvo-Treatment processes and colloidal stability of produced nanoparticles in a dilute experimental dental adhesive J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Sadat-Shojai
The main purpose of this study is to investigate the colloidal stability of hydroxyapatite (HAp) nanoparticles prepared by different methods. Nano-sized hydroxyapatite particles are synthesized by two different methods including hydrothermal and solvo-treatment processes. In hydrothermal process nanoparticles are synthesized at high temperature, while in solvo-treatment method nanoparticles are synthesized
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One-pot synthesis of pyrano[2,3- d ]pyrimidinone derivatives catalyzed by L -proline in aqueous media J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Bararjanian; S. Balalaie; B. Movassag; A. M. Amani
An efficient protocol has been developed for the synthesis of various pyrano[2,3-d]pyrimidinones from condensation of aromatic aldehydes, malononitrile and barbituric-or thiobarbituric acid in aqueous ethanol using L-proline as a neutral bifunctional catalyst.
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Sensitivity of the population of states to the value of q and legitimate range of q in Tsallis statistics J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 A. M. Nassimi; G. Parsafar
In the framework of the Tsallis statistical mechanics, we study the change of the population of states when the parameter q is varied, for some model systems; the results show that the difference between predictions of the Boltzmann-Gibbs and Tsallis statistics can be much smaller than the precision of any existing experiment. Also, the relation between privilege of rare and frequent events and the
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A comparative study of the separation of oleanolic acid and ursolic acid in Prunella vulgaris by high-performance liquid chromatography and cyclodextrin-modified micellar electrokinetic chromatography J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Du; X. Q. Chen
A high-performance liquid chromatographic (HPLC) method and a cyclodextrin-modified micellar electrokinetic chromatographic (CD-MEKC) method were developed to separate and determine oleanolic acid (OA) and ursolic acid (UA) in Prunella vulgaris. HPLC separations were carried out on a Hedera ODS C18 column with methanol -H2O- acetic acid (85:15:0.3, v/v/v) as mobile phase at a flow-rate of 0.8 ml min−1
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Green protocol for synthesis of the 3,5-disubstituted 1,2,4-thiadiazoles using N-benzyl-DABCO-tribromide in aqueous media J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 H. Zali Boeini
A novel and simple method for rapid conversion of thioamides to the corresponding 1,2,4-thiadiazole derivatives was developed. It was shown that, thioamides undergo clean and efficient oxidation and cyclization in their conversion to 1,2,4-thiadiazoles using N-benzyl-DABCO-tribromide in wet solid-solid conditions.
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Ionic liquid promoted expeditious synthesis of flavones J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 R. S. Bhosale; S. R. Sarda; R. P. Giram; D. S. Raut; S. P. Parwe; S. S. Ardhapure; R. P. Pawar
A smooth conversion of substituted 1-(2-hydroxy phenyl)-3-phenyl-1,3-propane diones to flavones has been done using n-butyl-3-methyl-imidazolium tetrafluoroborate ionic liquid.
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Design and synthesis of coumarin substituted oxathiadiazolone derivatives having anti-inflammatory activity possibly through p38 MAP kinase inhibition J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 Y. Bansal; S. Ratra; G. Bansal; I. Singh; H. Y. Aboul-Enein
Compounds containing oxathiadiazolone nucleus bearing substituted coumarin ring were designed and synthesized while retaining the pharmacophores required for binding with p38 MAP kinase. A four-step synthetic scheme was employed for the synthesis of 7-methoxy-4-(3t?-substituted-2t?-oxo-1t?,2t?,3t?,5t?-oxathiadiazol-4t?-yl)-coumarin. The reactions were monitored by TLC and structures of the intermediates
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Basic resin mediated efficient one-pot synthesis of carbazates from the corresponding alkyl halides J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 D. Chaturvedi; A. K. Chaturvedi; N. Mishra; V. Mishra
A quick and efficient, one-pot synthesis of carbazates was accomplished in high yields by the reaction of various primary, secondary, and tertiary alkyl halides with a variety of substituted hydrazines using Amberlite IRA 400 basic resin/CO2 system. The reaction conditions were mild with simpler work-up procedures than the previously reported methods.
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Photocatalytic degradation of azo dyes catalyzed by Ag doped TiO 2 photocatalyst J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 V. Mirkhani; S. Tangestaninejad; M. Moghadam; M. H. Habibi; A. Rostami-Vartooni
In this paper, photocatalytic degradation of commercial textile azo dyes catalyzed by titanium dioxide and modified titanium dioxide with Ag metal (1% w/w) in aqueous solution under irradiation with a 400 W high-pressure mercury lamp is reported. The effect of various parameters such as irradiation time of UV light, amount of photocatalyst, flow rate of oxygen, pH and temperature for the Ag-TiO2 photocatalyst
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Zirconyl triflate: A new, highly efficient and reusable catalyst for acetylation and benzoylation of alcohols, phenols, amines and thiols with acetic and benzoic anhydrides J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Moghadam; S. Tangestaninejad; V. Mirkhani; I. Mohammadpoor-Baltork; M. Babaghanbari; M. Zarea; L. Shariati; S. A. Taghavi
Highly efficient acetylation and benzoylation of alcohols, phenols, amines and thiols with acetic and benzoic anhydrides catalyzed by new and reusable zirconyl triflate, ZrO(OTf)2, is reported. The high catalytic activity of electron deficient ZrO(OTf)2 can be used for the acetylation and benzoylation of not only primary alcohols but also sterically-hindered secondary and tertiary alcohols with acetic
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NaIO 4 -catalyzed one-pot synthesis of dihydropyrimidinones at room temperature under solvent-free conditions J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 X. Jing; Z. Li; X. Pan; Y. Shi; C. Yan
Sodium periodate efficiently catalyzed the three-component Biginelli reaction of an aldehyde, α β-keto ester or β-keto ketone, and urea or thiourea at room temperature under solvent-free conditions and afforded the corresponding 3,4-dihydropyrimidine-2-(1H)-ones in excellent yields.
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Photodegradation of Congo red in aqueous solution on ZnO as an alternative catalyst to TiO 2 J. Iran. Chem. Soc. (IF 1.552) Pub Date : 2009 M. Movahedi; A. R. Mahjoub; S. Janitabar-Darzi
In this research, the efficiency of ZnO and TiO2 was compared by photocatalytic degradation of Congo red azo dye. The effects of some parameters such as pH, dye concentration and irradiation time on the degradation rate of dye solution were also examined. In addition, the aggregation feature of Congo red was studied by using UV-Vis spectroscopy techniques. The recovery of the ZnO catalyst was also
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