STEREOCHEMICAL NONRIGIDITY IN A MACROCYCLIC VINYLSILOXANE-BASED TRIS(ALKENE)NICKEL(0) COMPLEX

被引：6

作者：

AVENT, AG ^{[1
]}

LAPPERT, MF ^{[1
]}

MACBEATH, C ^{[1
]}

机构：

[1] UNIV SUSSEX,SCH CHEM & MOLEC SCI,BRIGHTON BNL 9QJ,E SUSSEX,ENGLAND

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 502卷 / 1-2期

关键词：

NI(O) TRIENE COMPLEXES; DIVINYLTETRAMETHYLDISILOXANE; DYNAMIC PROCESSES; HYDROSILYLATION;

D O I：

10.1016/0022-328X(95)05805-Y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of variable temperature saturation transfer NMR spectroscopic experiments show that the complex [Ni(CH2=CHSi(Me)(2)OSi(Me)(2)CH=CHSi(Me)(2)OSi(Me)(2)CH=Ch(2))] (1) undergoes slow chemical exchange with minor conformers in benzene-d(6), at 298 K. The latter are proposed intermediates in an intramolecular process causing epimerization of the fused bicyclic molecule to take place. The implications of these results for interpreting dynamic processes in the monocyclic complex [Pt(LL)(P(t)Bu(3))] and the Karstedt hydrosilylation catalyst [{Pt(LL)}(2)(mu-LL)] are discussed [LL = {Me(2)(CH2=CH)Si}O-2].

引用

页码：163 / 167

页数：5

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