SYNTHESIS AND CRYSTAL-STRUCTURE OF THE FIRST DIMERIC SILAAMIDIDE

被引：3

作者：

HEMME, I ^{[1
]}

SCHAFER, M ^{[1
]}

HERBSTIRMER, R ^{[1
]}

KLINGEBIEL, U ^{[1
]}

机构：

[1] UNIV GOTTINGEN,INST ANORGAN CHEM,D-37077 GOTTINGEN,GERMANY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 493卷 / 1-2期

关键词：

SILICON; SILAAMIDIDE; DIMERIZATION; CRYSTAL STRUCTURE;

D O I：

10.1016/0022-328X(94)05322-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Bis(tert-butyldimethylsilylamino)-fluorophenylsilane (1) is prepared by the reaction of lithiated silylamine with trifluorophenylsilane. 1 reacts with tert-butyllithium in the molar ratio 1:2 to give a dilithium derivative, PhSiF(NLiR),. LiF-elimination in the presence of THF leads to the formation of a silaamidide, which is isolated as a four-membered cyclosilazane anion, (PhSi-NR)(2)Li(NR)(2)(-), and Li(THF)(4)(+) cation(2). The endocyclic Si-N bonds are much longer (171.0-176.7 pm) than the exocyclic ones (165.0 pm, 165.6 pm). The (Si-N)(2) ring is not planar, and the sum of angles at the nitrogen atoms differ from 360 degrees (N(1)Sigma = 356.4 degrees and N(2)Sigma = 352.4 degrees).

引用

页码：223 / 227

页数：5

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