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Reactions of Silylphosphines. – Formation of Lithium Tris(diethylphosphinyl)silicide
Author(s) -
Fritz G.,
Becker G.
Publication year - 1967
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.196710781
Subject(s) - library science , chemistry , computer science
Chlorosilanes such as HSiCb which contain SiH groups react with LiP(CzHsh to give large amounts of (CzHs)zPH together with silylphosphines. (C2HShP--P(C2HSh is formed from chlorosilanes such as SiCI4 which do not contain SiH groups, provided that an excess of LiP(CzHsh is present [!J. In addition, red polymers containing Si-Si groups are formed. These side reactions are almost completely suppressed if an excess of the chlorosilane is maintained during the whole reaction, as can be done by adding dropwise an ethereal solution of the phosphide to the chlorosilane [2J. Thence it can be assumed that a silylphosphine formed as intermediate is reactive towards the strongly nucleophilic phosphide. We have therefore prepared silyland methylsilyl-phosphine and have studied their behavior towards LiP(CzHsh in diethyl ether. The course of the reaction was followed by measurement of the NMR spectrum.