Effect of stereoisomerism of (tetrhydroxy)(tetraphenyl)cyclotetrasiloxaes оn the siloxane framework in polyphenylsilsesquioxanes obtained by polycondensation in the presence of layered-architecture compoundsстатья
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Дата последнего поиска статьи во внешних источниках: 20 марта 2017 г.
Аннотация:Polycondensation of four stereoisomers of tetrakis(hydroxy)(phenyl)cyclotetrasiloxane in solution in the presence of layered-architecture compounds afforded polyphenylsilsesquioxanes with different conformational and configurational structures of the siloxane framework, determined by IR, 29Si NMR spectroscopy, powder X-ray diffraction and MALDI analysis.