SYNTHESIS OF THE NEW SILANEDIYLDIPHOSPHINITE TBU(2)SI(OPPH(2))(2) AND ITS REACTIONS WITH THE NORBORNADIENE COMPLEXES C(7)H(8)M(CO)(4) (M=CR, MO, W) - CRYSTAL-STRUCTURES OF CIS-M(CO)(4),[TBU(2)SI(OPPH(2))(2)] (M=CR, MO)

被引：5

作者：

VOELKER, H ^{[1
]}

FREITAG, S ^{[1
]}

PIEPER, U ^{[1
]}

ROESKY, HW ^{[1
]}

机构：

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

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1995年 / 621卷 / 04期

关键词：

SILANEDIYLDIPHOSPHINITE; CHELATE COMPLEXES; SYNTHESIS; STRUCTURE; MULTINUCLEAR NMR SPECTROSCOPY;

D O I：

10.1002/zaac.19956210433

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Silanediyldiphosphinite tBu(2)Si(OPPh(2))(2) 1 has been synthesised. 1 reacts with the norbornadiene complexes C(7)H(8)M(CO)(4) (M = Cr, Mo, W) to give six-membered chelate rings of the type cis-M(CO)(4)[tBu(2)Si(OPPh(2))(2)] 2-4. The crystal structures of the chromium and molybdenum complexes cis-Cr(CO)(4)[tBu(2)Si(OPPh(2))(2)] 2 and cis-Mo(CO)(4)[tBu(2)Si(OPPh(2))(2)] 3 have been determined. Both complexes crystallise in the triclinic system (space group Pi) with unit cell parameters: (2) a = 1093(3) pm, b = 1477(5) pm and c = 1542(5) pm; alpha = 108.4(2)degrees, alpha = 103.87(11)degrees and gamma = 104.57(10)degrees; U = 2.143(12) nm(3); Z = 2; (3) a = 1097.8(2) pm, b = 1483.7(2) pm and c = 1554.3(2) pm; alpha = 108.10(1)degrees, beta = 103.956(6)degrees and gamma = 104.213(7)degrees; U = 2.1899(6) nm(3); Z = 2. Both 2 and 3 consist of discrete, slightly distorted, octahedral monomers in which the six-membered chelate rings are essentially planar. In contrast, the conformations of the chelate rings found in crystal structures of analogous complexes vary from twist-boat to ''chaise longue''.

引用

页码：694 / 698

页数：5

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