STERIC AND INDENYL EFFECTS IN THE CHEMISTRY OF ALKYLIDYNE COMPLEXES OF TUNGSTEN AND MOLYBDENUM

被引：31

作者：

ANDERSON, S ^{[1
]}

HILL, AF ^{[1
]}

NASIR, BA ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, DEPT CHEM, LONDON SW7 2AY, ENGLAND

来源：

ORGANOMETALLICS | 1995年 / 14卷 / 06期

关键词：

D O I：

10.1021/om00006a049

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction between LiC(5)Me(5) or KC9H7 and [M(=C(6)H(3)Me(2)-2,6)(CO)(2)(NC(5)H(4)Me-4)(2)Br] affords the complexes [M(=CC(6)H(3)Me(2)-2,6)(CO)(2)L] (L = eta-C(5)Me(5), M = W (1a); Mo (1b); L = eta(5)-C9H7, M = MO (1c)). The complexes 1a and 1b react with PMe(3) to give eta(2)-ketenyl compounds [M{eta(2)-C(O)CC(6)H(3)Me(2)-2,6}(CO)(PMe(3))(eta-C(5)Me(5))] (M = W (2a), Mo (2b)) while the reaction of 1c with PMe(3) or P(OMe)3 gives [Mo(=CC(6)H(3)Me(2)-2,6)(CO)L'(eta(5)-C9H7)] (L' = PMe(3) (3a), P(OMe)(3) (3b)). Thermolysis of 2a provides 1a rather than the anticipated complex [W(=CC(6)H(3)Me(2)-2,6)(CO)(PMe(3))(eta-C(5)Me(5))]. Compound 1b has been employed to prepare the range of heterobimetallic compounds [MoFe(mu-CC(6)H(3)Me(2)-2,6)(CO)(5)(eta-C(5)Me(5))] (4), [MoFe(mu-CC(6)H(3)Me(2)-2,6)(CO)(3)(mu-dppm)(eta-C(5)Me(5))]. (5), [MoFe(mu-eta(2)-SeCC(6)H(3)Me(2)-2,6)(CO)(5)(eta-C(5)Me(5))] (6), and [MoCu(mu-CC(6)H(3)Me(2)-2,6)(CO)(mu-CO)(eta-C(5)Me(5))(2)] (8b), with bonds between molybdenum and iron or copper supported by the xylylmethylidyne unit, to assess the effects of steric encumbrance on bridge-assisted cluster asembly.

引用

页码：2987 / 2992

页数：6

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