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A. N. Bilyachenko A. A. Korlyukov M. M. Levitskii M. Yu. Antipin B. G. Zavin 《Russian Chemical Bulletin》2007,56(3):543-545
The first cage-like ferrophenyl siloxane containing FeIII ions in different coordination spheres (four iron ions have a trigonal-bipyramidal coordination and two iron ions have a
distorted octahedral coordination) was synthesized by the exchange reaction of sodium phenylsilanolate with FeIII chloride. An exotic lantern-like structure is formed with the involvement of two metal oxide fragments Fe—O—Fe. The structure
of this compound was established by X-ray diffraction.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 522–524, March, 2007. 相似文献
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N. V. Sergienko N. V. Cherkun A. A. Korlyukov A. A. Sochikhin V. D. Myakushev T. V. Strelkova B. G. Zavin 《Russian Chemical Bulletin》2013,62(9):1999-2006
The selective replacement of Na ions in cage-like (Cu,Na) organosiloxanes in reactions with divalent metal halides was studied. The sandwich-like isomer [PhSiO2]6Cu4Na4[PhSiO2]6 forms the corresponding bimetallic complexes [PhSiO2]6Cu4M2[PhSiO2]6 (M = Cu, Zn, Mg, Sr, Ba) retaining a sandwich-like structure (in 60–90% yields) regardless of the metal ion size in MCl2. Under similar conditions, the reactions of the globular isomers [RSiO2]12Cu4Na4 (R = Ph, Me, Vin) with CuX2 (X = Cl or Br) afforded insoluble polymer products. The reaction in dioxane or THF in the presence of DMSO gave the crystalline globular-type metal complexes [RSiO2]12Cu4[CuX]4, in which Na ions are replaced by CuX groups. The compositions and structures of the synthesized metal complexes were studied by X-ray diffraction, elemental analysis, and destructive silylation combined with gel permeation chromatography and 1H NMR spectroscopy. 相似文献
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L. V. Filimonova L. I. Makarova A. A. Voronina T. V. Strelkova I. G. Barakovskaya B. G. Zavin A. J. Pertsin V. S. Papkov 《Polymer Science Series B》2013,55(5-6):266-270
Oligo(diethylsiloxane diols) carrying β-oxyethoxymethyl terminal groups are synthesized for the first time by the cationic polymerization of hexaethylcyclotrisiloxane in the presence of bis(β-oxyethoxymethyl)tetramethyldisiloxane with the use of sulfuric acid or the cationite KU-23 as a catalyst. It is shown that, along with oligo(diethylsiloxane diols), the products of rearrangement of diethylsiloxane chains, such as octaethylcyclotetrasiloxane and higher cycles, are formed. The reaction of dipotassium salts of oligo(diethylsiloxane diols) with chlorosilanes of the formula ClSi(CH3)2CH2O(CH2)2OCOCH3 yields acetoxy-terminated oligomers that contain octaethylcyclotetrasiloxane and higher cycles as well. 相似文献
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I. O. Volkov L. V. Filimonova A. A. Anisimov O. V. Sinitsyna O. A. Belyakova A. A. Voronina Ya. V. Zubavichus A. G. Filatova L. I. Makarova I. V. Yaminsky B. G. Zavin E. M. Belavtseva 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(8):986-989
The structure of siloxane-urethane-ethylene oxide block copolymers is studied by means of atom force microscopy (AFM) and scanning electron microscopy (SEM). The degree of copolymer crystallinity is determined by X-ray diffraction. A correlation between the obtained results is established. 相似文献
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I. O. Volkov L. V. Filimonova L. I. Makarova A. A. Anisimov O. V. Sinitsyna A. A. Burmistrov A. G. Filatova B. G. Zavin I. V. Yaminsky E. M. Belavtseva 《Bulletin of the Russian Academy of Sciences: Physics》2014,78(9):878-880
The structure of amorphous polysiloxane carbonate urethanes is studied by AFM, SEM, and TEM. It is found that the polymer structure depends on the nature of solvent used for film casting. 相似文献
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