Structural investigations on new iron-acyl derivatives of B(C6F5)3

被引：14

作者：

Anderson, GDW ^{[1
]}

Boys, OJ ^{[1
]}

Cowley, AR ^{[1
]}

Green, JC ^{[1
]}

Green, MLH ^{[1
]}

Llewellyn, SA ^{[1
]}

von Beckh, CM ^{[1
]}

Pascu, SO ^{[1
]}

Vei, IC ^{[1
]}

机构：

[1] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2004年 / 689卷 / 24期

关键词：

Fischer-Tropsch reactions; tris(perfluorophenyl)borane; Lewis acids; catalysis; Fe-acyls complexes; Fischer carbenes; density functional;

D O I：

10.1016/j.jorganchem.2004.07.013

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reactions between [Fe(eta-C5H5)(MeCO)(CO)(L)], L = PPh3 (1), PMe3 (2), PPhMe2 (3), PCy3 (4), CO (5), and B(C6F5)(3) give new complexes [Fe(eta-C5H5){MeCOB(C6F5)(3)}(CO)(L)] L = PPh3 (7), PMe3 (8), PPhMe2 (9), PCY3 (10), CO (11), where B(C6F5)(3) coordinates selectively to the O-acyl groups. Hydrolysis of 7 gives [Fe(eta-C5H5){HOB(C6F5)(3)}(CO)(PPh3)] (6). The X-ray structures of 6, 8 and 11 have been determined. Calculations, using density functional theory, demonstrate that the charge transfer to the acyl group on Lewis acid coordination is more significant in the sigma than the pi system. Both effects lead to a lengthening of the acyl C-O bond thus pi populations cannot be inferred from the distance changes. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：4407 / 4419

页数：13

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