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Branched Star‐Type Polysilyllithium Compounds: The Effects of β ‐Silyl Substitution and of Complexation on Their Molecular Structure
Author(s) -
Apeloig Yitzhak,
Yuzefovich Michael,
Bendikov Michael,
BravoZhivotovskii Dmitry,
Bläser Dieter,
Boese Roland
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010817)40:16<3016::aid-anie3016>3.0.co;2-a
Subject(s) - substitution (logic) , dimer , silylation , chemistry , star (game theory) , crystallography , ion , stereochemistry , organic chemistry , catalysis , physics , computer science , programming language , astrophysics
It was fortunate that the first extended branched polysilyl anion (Me 3 SiMe 2 Si) 3 Si − could be crystallographically characterized in two forms—as the THF complex 1 and as the dimer 2 . Comparison with the analogous (Me 3 Si) 3 SiLi systems 3 and 4 shows that β ‐Me 3 Si substitution and complexation by THF elongate the Si−Li distance by 0.09–0.14 Å and 0.04–0.07 Å, respectively.