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  • Catalysis by platinum and palladium species confined in the bulk of glass fibre materials
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-10-28
    B S Bal'zhinimaev

    ##IMG## [http://ej.iop.org/images/0036-021X/89/11/1184/rc4958c.gif] The results of studies on the application of silicate glass fibre materials in catalysis are summarized and analyzed. Despite the very low noble metal content, catalysts based on these materials showed exceptionally high activities and selectivities in some catalytic reactions. This is due to specificity of the glassy state, which

    更新日期:2020-10-30
  • Complexes of diamagnetic cations with radical anion ligands
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-10-28
    I V Ershova, A V Piskunov and V K Cherkasov

    ##IMG## [http://ej.iop.org/images/0036-021X/89/11/1157/rc4957c.gif] The review summarizes and analyzes the currently know data on the synthesis, molecular and electronic structures and magnetic properties of bi-, tri- and tetraradical complexes containing a diamagnetic metal ion and redox-active ligands in the paramagnetic form. The bibliography includes 193 references.

    更新日期:2020-10-30
  • Access to molecular complexity. Multicomponent reactions involving five or more components.
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-10-28
    V G Nenajdenko

    ##IMG## [http://ej.iop.org/images/0036-021X/89/11/1274/rc5010c.gif] The evaluation of the significance of a chemical transformation addresses many factors, including such important characteristics as the number of chemical bonds formed in one step, the reaction time, labour intensity, the cost of reactants and catalysts and so on. The amount of waste produced in the reaction has also gained increasing

    更新日期:2020-10-30
  • New method for the synthesis of heterospin metal complexes with nitroxides
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-10-28
    V I Ovcharenko and O V Kuznetsova

    ##IMG## [http://ej.iop.org/images/0036-021X/89/11/1261/rc4981c.gif] A new approach was developed to synthesize transition metal complexes with nitroxides based on the simultaneous involvement of nitronyl nitroxide and imino nitroxide in the reaction with metal. It was shown that the reaction of a metal with nitronyl nitroxide can afford a metal complex containing two different radicals in the metal

    更新日期:2020-10-30
  • Perimidines: a unique π-amphoteric heteroaromatic system
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-10-28
    A F Pozharskii, A V Gulevskaya, R M Claramunt, I Alkorta and J Elguero

    ##IMG## [http://ej.iop.org/images/0036-021X/89/11/1204/rc4963c.gif] Data on the physicochemical characteristics, theoretical calculations, reactivity and synthetic methods for perimidines are summarized. ALThough perimidine and some of its simple 2-substituted derivatives were obtained by Sachs back in 1909, their chemistry and key physical properties remained unknown until the early 1970s. Subsequent

    更新日期:2020-10-30
  • Catalysis and regioselectivity in hydrofunctionalization reactions of unsaturated carbon bonds. Part II. Hydroamination
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-09-17
    I P Beletskaya, C Nájera and M Yus

    ##IMG## [http://ej.iop.org/images/0036-021X/89/10/1074/rc4953c.gif] This review continues consideration of the regioselectivity problem in the catalyzed hydrofunctionalization of unsaturated organic compounds and addresses hydroamination of unsaturated hydrocarbons. Particular parts of the review deal with reactions of alkenes, alkynes, allenes and dienes. It is shown that the selectivity of hydroamination

    更新日期:2020-09-20
  • Huprines — an insight into the synthesis and biological properties
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-09-17
    E Mezeiova, O Soukup and J Korabecny

    ##IMG## [http://ej.iop.org/images/0036-021X/89/10/999/rc4938c.gif] The overlapping of tacrine and (–)-huperzine A templates yielded a family of highly potent cholinesterase inhibitors, so-called huprines. A relatively easy access to these compounds led to the development of dozens of huprine derivatives allowing to draw structure–activity relationship mainly for acetylcholinesterase and butyrylcholinesterase

    更新日期:2020-09-20
  • Sorbents for water purification based on conjugated polymers
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-09-17
    I Yu Sapurina, M A Shishov and V T Ivanova

    ##IMG## [http://ej.iop.org/images/0036-021X/89/10/1115/rc4955c.gif] The sorption properties of polymers with a polyconjugated chain structure (polyaniline and polypyrrole) are considered. The molecular mechanism of sorption by these polymers of various compounds such as heavy metal ions, toxic organic compounds and micropathogens, which are the most hazardous and stubborn contaminants in water, is

    更新日期:2020-09-20
  • Polymer electrolytes for metal-ion batteries
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-09-17
    D Yu Voropaeva, S A Novikova and A B Yaroslavtsev

    ##IMG## [http://ej.iop.org/images/0036-021X/89/10/1132/rc4956c.gif] The results of studies on polymer electrolytes for metal-ion batteries are analyzed and generalized. Progress in this field of research is driven by the need for solid-state batteries characterized by safety and stable operation. At present, a number of polymer electrolytes with a conductivity of at least 10 −4 S cm −1 at 25 °C were

    更新日期:2020-09-20
  • Computational aspects of 19 F NMR
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-09-17
    L B Krivdin

    ##IMG## [http://ej.iop.org/images/0036-021X/89/10/1040/rc4948c.gif] This review covers most recent advances in computation of 19 F NMR chemical shifts and spin–spin coupling constants involving 19 F nucleus calculated at different levels of theory. It deals mainly with electronic and stereochemical effects influencing these parameters, with a special emphasis on practical applications of such calculations

    更新日期:2020-09-20
  • Systems for accumulation, storage and release of hydrogen
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-08-03
    Leonid M. Kustov, Alexander N. Kalenchuk and Viktor I. Bogdan

    ##IMG## [http://ej.iop.org/images/0036-021X/89/9/897/rc4940c.gif] The results of studies on the hydrogen accumulation, storage and release systems differing in the type of hydrogen interaction with the material (medium) used for hydrogen storage are analyzed. Published data on the use of polycyclic hydrocarbons as the basis for hydrogen storage in a chemically bound state are summarized. Substrate

    更新日期:2020-08-20
  • Mono- and binuclear complexes of group 5 metals with diimine ligands: synthesis, reactivity and prospects for application
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-08-03
    Iakov S. Fomenko and Artem L. Gushchin

    ##IMG## [http://ej.iop.org/images/0036-021X/89/9/966/rc4949c.gif] Published data on the coordination compounds of group 5 metals with diimine type ligands are surveyed. Methods of synthesis, structural types, reactivity and properties of these compounds are summarized and systematized. Particular attention is paid to the redox, magnetic and catalytic properties and to biological activities of these

    更新日期:2020-08-20
  • Syntheses of polyfunctional aromatic compounds from non-aromatic precursors
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-08-03
    Thomas Mies, Tsz-Kan Ma and Anthony G. M. Barrett

    ##IMG## [http://ej.iop.org/images/0036-021X/89/9/917/rc4931c.gif] Syntheses of polyfunctional benzene derivatives from both cyclic and acyclic non-aromatic precursors are reviewed. Such aromatizations include transformations that use Diels – Alder reactions, transition metal-catalyzed reactions, base mediated aldol or Michael addition reactions or electrocyclic and pericyclic reactions. This review

    更新日期:2020-08-20
  • 11 C- and 18 F-labelled tryptophans as PET-tracers for imaging of altered tryptophan metabolism in age-associated disorders
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-08-03
    Boris D. Zlatopolskiy, Heike Endepols, Raisa N. Krasikova, Olga S. Fedorova, Johannes Ermert and Bernd Neumaier

    ##IMG## [http://ej.iop.org/images/0036-021X/89/9/879/rc4954c.gif] The ageing of the world’s population is the result of increased life expectancy observed in almost all countries throughout the world. Consequently, a rising tide of ageing-associated disorders, like cancer and neurodegenerative diseases, represents one of the main global challenges of the 21st century. The ability of mankind to overcome

    更新日期:2020-08-20
  • Molecular basis of COVID-19 pathogenesis
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-07-05
    Fedor N. Novikov, Viktor S. Stroylov, Igor V. Svitanko and Vladimir E. Nebolsin

    ##IMG## [http://ej.iop.org/images/0036-021X/89/8/858/rc4961c.gif] The review summarizes the publications, available at the time it was written, addressing the chemical and biological processes that occur in the human body upon exposure to coronaviruses, in particular SARS-CoV-2. The mechanisms of viral particle entry into the cell, viral replication and impact on the immune system and on oxygen transport

    更新日期:2020-08-20
  • Natural and synthetic cytokinins and their applications in biotechnology, agrochemistry and medicine
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-07-05
    Maxim S. Oshchepkov, Antonida V. Kalistratova, Ekaterina M. Savelieva, Georgy A. Romanov, Natalia A. Bystrova and Konstantin A. Kochetkov

    ##IMG## [http://ej.iop.org/images/0036-021X/89/8/787/rc4921c.gif] The review is devoted to cytokinins — classical plant hormones known for more than six decades. Nevertheless, different aspects of the action of cytokinins are still being investigated. Relevant studies produced interesting, often unexpected, results, which cast doubt on the old paradigms and open new prospects for the use of these phytohormones

    更新日期:2020-08-20
  • Stability of polymer jets in extension: physicochemical and rheological mechanisms
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-07-05
    Alexander Ya. Malkin, Andrey V. Subbotin and Valery G. Kulichikhin

    ##IMG## [http://ej.iop.org/images/0036-021X/89/8/811/rc4941c.gif] The review is devoted to the fundamental problems of physical chemistry and rheology posed in the analysis of stability loss of polymer jets in extension. Studies of phenomena occurring in deformation of polymeric fluids are of considerable applied interest because extension of polymeric fluids underlies many industrial processes, first

    更新日期:2020-08-20
  • New advances in the catalysis of organic reactions by iron compounds
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-07-05
    Ravil I. Khusnutdinov and Alfiya R. Bayguzina

    ##IMG## [http://ej.iop.org/images/0036-021X/89/8/824/rc4943c.gif] The review summarizes and systematizes the literature data on a new promising application area of iron compounds, that is, catalysis of organic reactions. The considered reactions include halogenation, formation of C−C bonds with the participation of various substrates, new methods for the synthesis of ethers and aromatic and heteroaromatic

    更新日期:2020-08-20
  • Sensory effects of fluorescent organic dyes
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-06-10
    Valerii F. Traven and Dmitrii A. Cheptsov

    ##IMG## [http://ej.iop.org/images/0036-021X/89/7/713/rc4909c.gif] Organic dyes are very promising substrates for modern sensing technologies. Their utility is based on the ‘push-pull’ polarization of a π-electron system, as well as their polyfunctionality. These properties make organic dyes capable of fluorescent sensory response to many analytes and provide different mechanisms of both fluorescence

    更新日期:2020-06-10
  • From spin-labelled fused polyaromatic compounds to magnetically active graphene nanostructures
    Russ. Chem. Rev. (IF 4.75) Pub Date : 2020-06-10
    Yury A. Ten, Nadezhda M. Troshkova and Evgeny V. Tretyakov

    ##IMG## [http://ej.iop.org/images/0036-021X/89/7/693/rc4923c.gif] Molecular design of magnetically active graphene nanoscale structures is an emerging field of research. The key goal of this research is to produce graphene nanoribbons and graphene quantum dots with specified electronic, optical and magnetic properties. The review considers methods for the synthesis of spin-labelled polycyclic aromatic

    更新日期:2020-06-10
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