SILYLATED DIPHOSPHITE COMPLEXES OF MOLYBDENUM - CRYSTAL-STRUCTURES OF THE COMPOUNDS MO(CO)4[P(OME)2O]2SIR2R3 (R2 = R3 = PH OR R2 = ME, R3 = PH)

被引：11
作者：
SUM, V [1 ]
KEE, TP [1 ]
THORNTONPETT, M [1 ]
机构：
[1] UNIV LEEDS,SCH CHEM,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1992年 / 438卷 / 1-2期
关键词：
D O I：
10.1016/0022-328X(92)88009-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The crystal structures of two silylated diphosphite complexes of molybdenum, Mo(CO)4[P(OMe)2O]2SiPh2 (1) and Mo(CO)4[P(OMe)2O]2SiMePh (2) have been determined. Both complexes crystallize in the triclinic system (space group P1BAR) with unit cell parameters: (1) a = 909.5(1) pm, b = 1059.8(1) pm and c = 1442.4(2) pm; alpha = 80.84(1)-degrees, beta = 72.73(1)-degrees and gamma = 73.51(1)-degrees; U = 1.2687(3) nm3; Z = 2; (2) a = 927.7(1) pm, b = 1058.4(1) pm and c = 1279.5(2) pm; alpha = 96.23(1)-degrees, beta = 99.17(1)-degrees and gamma = 110.48(1)-degrees; U = 1.1434(3) nm3; Z = 2. Both 1 and 2 consist of discrete, slightly distorted octahedral monomers in which the six-membered chelate rings adopt unusual twist-boat conformations in contrast to the chair type geometry normally found in complexes containing the formally analogous diphosphine ligand [PPh2CH2]2CH2 (dppp).
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页码：89 / 98
页数：10
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