A5076371469- Silicone and Siloxane Chemistry
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Polyoxometalates: Synthesis and Applications
- Organometallic Compounds Synthesis and Characterization
- Magnetism in coordination complexes
- Synthesis and characterization of novel inorganic/organometallic compounds
- Synthesis and properties of polymers
- Marine Biology and Environmental Chemistry
- Crystallography and molecular interactions
- Lanthanide and Transition Metal Complexes
- Photopolymerization techniques and applications
- Corrosion Behavior and Inhibition
- Chemical Synthesis and Characterization
- Organometallic Complex Synthesis and Catalysis
- Organoboron and organosilicon chemistry
- Metal complexes synthesis and properties
- biodegradable polymer synthesis and properties
- Mesoporous Materials and Catalysis
- Catalysis and Oxidation Reactions
- Material Properties and Applications
- Boron Compounds in Chemistry
- Thermal and Kinetic Analysis
- Analytical Chemistry and Sensors
- Porphyrin and Phthalocyanine Chemistry
A. N. Nesmeyanov Institute of Organoelement Compounds
2016-2025
Institute of Synthetic Polymeric Materials
2020
Russian Academy of Sciences
1990-2016
Lomonosov Moscow State University
2010
Corning (United States)
2002
Goethe University Frankfurt
2002
University of Florence
1996
Centre National de la Recherche Scientifique
1996
Semenov Institute of Chemical Physics
1991
A.V. Topchiev Institute of Petrochemical Synthesis
1990
In this work we propose an approach for obtaining of polydimethylsiloxanes various structures, both linear and branched, by a ring-opening polymerization (ROP) hexamethylcyclotrisiloxane initiated silanols in liquid...
The magnetic behavior of the clusters [(PhSiO(2))(6)Cu(6)(O(2)SiPh)(6)].6EtOH (1), Na(4)[(PhSiO(2))(12)Cu(4)].8(n)()BuOH (2), and K(4)[(C(2)H(3)SiO(2))(12)Cu(4)].6(n)()BuOH (3) has been investigated by combined susceptibility measurements variable-temperature EPR techniques (9.25 245 GHz). six copper(II) ions in core 1, which approaches 6/mmm symmetry, are ferromagnetically coupled as a result geometry at bridging siloxanolate oxygen atoms (Cu-O-Cu = 91.5-94.6 degrees; J -42 cm(-)(1) with H...
New stereoregular cyclic polysilanols of the general formula [PhSi(O)OH]n (n = 6 and 12) have been selectively obtained in high yields by reaction cagelike oligophenylmetallasiloxanes with dilute solutions hydrochloric acid at low temperatures. An alternative method was used to prepare cis-[PhSi(O)OH](4) from sodium phenylsiloxanolate, cis-[(Na(+))(4)[PhSi(O)O(-)](4)].(1-butanol)(x). All compounds were fully characterized NMR IR spectroscopy molecular weight determinations. The structure...
Two approaches to the selective synthesis of polyfunctional stereoregular cyclosiloxanes from polyhedral organometallasiloxanes are reported.The molecules possess sandwich or globular structure and contain one two organocyclosiloxanolate fragments coordinated metal ions.According first approach were prepared primarily then treated with chlorodimethylsilane dimethylchlorovinylsilane. The second method is based on initial transforming into cyclic polysiloxanols reacted afterwards corresponding...
ABSTRACT Six new star‐shaped polydimethylsiloxane (PDMS) with various cyclic siloxane cores were synthesized by the “grafting onto” method. The polymers obtained feature low dispersity and well‐defined structures. Two of them, Q 8 ‐PDMS D 12 , have a three‐dimensional spatial structure traditional for where arms are arranged in all directions from branching center. other four polymers, 4 – quite different geometry ( cis ‐structure) PDMS‐arms on one side center plane. Such structures not...
Nowadays, luminescent materials attract wide attention due to their valuable characteristics and broad area of potential application. Luminescent silicone-based polymers possess unique properties, such as flexibility, hydrophobicity, thermal chemical stabilities, etc., which allow them be utilized in various fields, optoelectronics, solid-state lasers, solar concentrators, sensors, others. In the present work, a metal-ligand interaction approach was applied obtain new cross-linked based on...
Two different synthetic routes for the formation of sodium phenylsiloxanolate (SPS) have been developed: (i) cleavage oligo(phenylsilsesquioxane), OPSSO, by NaOH in n-butyl alcohol and (ii) reaction phenyltri-n-butoxysilane, PhSi(n-BuO)3, presence water. From both reactions, (ii), crystalline sym-cis-{(Na+)4[PhSi(O)O-]4}·8n-BuOH (A) was product isolated characterized X-ray diffraction. Reaction SPS with Me3SiCl resulted corresponding...
Abstract The alkali‐metal‐directed hydrolysis of phenyltrialkoxysilanes, PhSi(OR) 3 (R = Me, Et, n Bu), was performed under various reaction conditions. alkali metal ions were used both as templating entities and structural elements. crystalline sodium potassium phenylsiloxanolates (Na‐PhS K‐PhS) obtained in two different molecular compositions based on a cis ‐tetraphenylcyclotetrasiloxanolate, ‐[PhSi(O)O − ] 4 , or ‐triphenylcyclotrisiloxanolate, anions assembled into chain double‐layer...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecule-Based Magnets: Ferro- and Antiferromagnetic Interactions in Nickel(II) Cyclohexasiloxanolate Sandwich ComplexesAndrea Cornia, Antonio C. Fabretti, Dante Gatteschi, Gyula Palyi, Eva Rentschler, Olga I. Shchegolikhina, Alexandr A. ZhdanovCite this: Inorg. Chem. 1995, 34, 21, 5383–5387Publication Date (Print):October 1, 1995Publication History Published online1 May 2002Published inissue 1 October...
1,3,5,7-Tetramethyl-1,3,5,7-tetrahydroxycyclotetrasiloxane has been synthesized in good yield from tetrapotassium tetramethylcyclotetrasiloxanolate. Methods for isolation of all-cis-isomer I and cis-trans-cis-isomer II as the only crystalline product have developed. Both isomers characterized by single-crystal X-ray diffraction analysis (XRD), elemental analysis, NMR ((1)H, (13)C, (29)Si), IR. The stability these compounds solutions solid state investigated.
New non-crystallizable low-dispersity star-shaped polydimethylsiloxanes (PDMS) containing stereoregular cis-tetra(organo)(dimethylsiloxy)cyclotetrasiloxanes methyl-, tolyl- and phenyl-substituents at silicon atoms the mixture of four stereoisomers tetra[phenyl(dimethylsiloxy)]cyclotetrasiloxane as cores were synthesized. Their thermal viscous properties studied. All synthesized compounds characterized by a complex physicochemical analysis methods: nuclear magnetic resonance (NMR), FT-IR...