Phosphido-bridged dimolybdenum complexes with sulfide and thiolate ligands as precursors to mixed-metal clusters

被引：9

作者：

Adams, H ^{[1
]}

Bailey, NA ^{[1
]}

Bancroft, MN ^{[1
]}

Bisson, AP ^{[1
]}

Morris, MJ ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT CHEM,SHEFFIELD S3 7HF,S YORKSHIRE,ENGLAND

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1997年 / 542卷 / 01期

关键词：

D O I：

10.1016/S0022-328X(97)00297-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of [Mo-2(mu-H)(mu-PPh2)(CO)(4)(eta-C5H5)(2)] with an excess of a thiol, RSH, in refluxing toluene produced the novel quadruply-bridged compounds [Mo-2(mu-S)(2)(mu-SR)(mu-PPh2)(eta-C5H5)(2)] (7a, R = Et; 7b, R = Pr-i; 7c, R = Bu-t; 7d, R = p-C6H4Me; 7e R = C12H25) in moderate to good yield. The sulfur ligands in the product are formed by dealkylation of the thiol at the dimolybdenum centre. The reaction is proposed to proceed via the unstable intermediate species [Mo-2(mu-SR)(mu-PPh2)(CO)(2)(eta-C5H5)(2)], which could not be isolated in a pure form. Reaction of 7a-d with [Ru-3(CO)(12)] in refluxing tetrahydrofuran (thf) produced good yields of the mixed-metal clusters [Mo2Ru2(mu(3)-S)(2)(mu-SR)(mu-PPh2)(CO)(4)(eta-C5H5)(2)] 9; the X-ray crystal structure of the Et-substituted complex 9a has been determined. The cluster consists of a tetrahedral metal core with both Mo2Ru faces capped by triply bridging sulfides. The phosphido group bridges the Mo-Mo bond, whereas the thiolate ligand has migrated to the Ru-Ru edge. (C) 1997 Elsevier Science S.A.

引用

页码：131 / 140

页数：10

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