Synthesis and characterisation of the exo-nido molybdacarborane complex Mo(η-C3H5)(CO)2(7,8-μ-SCH2CH2S-7,8-nido-C2B9H10).: Strong B-H-Mo 3-centre bonding

被引：8

作者：

Barberà, G

Viñas, C

Teixidor, F

Rosair, GM

Welch, AJ

机构：

[1] CSIC, ICMAB, Inst Ciencia Mat, Bellaterra 08193, Spain

[2] Heriot Watt Univ, Dept Chem, Edinburgh EH14 4AS, Midlothian, Scotland

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 663卷 / 1-2期

关键词：

deprotonation; molybdacarborane; nido-carboranylthioethers; B-H-M agostic bond;

D O I：

10.1016/S0022-328X(02)01736-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of [7,8-mu-SCH2CH2S-7,8-nido-C2B9H10] - and MoBr(eta-C3H5)(CO)(2)(MeCN)(2) in THF affords the zwitterionic exo-nido molybdacarborane complex MO(eta-C3H5)(CO)(2)(7,8-mu-SCH2CH2S-7,8-nido-C2B9H10), characterised by(1)H- and B-11-NMR spectroscopy and by a crystallographic study. The complex is fluxional (having mirror symmetry on the NMR timescale) in solution at room temperature although asymmetric in the solid state. Data are presented which suggest a significant 3c-2e B3-H3-Mo bond. Deprotonation of [7,8-mu-SCH2CH2S-7,8-nido-C2B9H10]- with (LiNPr2)-Pr-i followed by reaction with MoBr(eta-C3H5)(CO)(2)(MeCN)(2) affords Li[1,2-mu-SCH2CH2S-3-(eta-C3H5)-3,3-(CO)(2)-3,1,2-closo-MoC2B9H9] for which H-1- and B-11-NMR data are reported. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：221 / 226

页数：6

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