Synthesis and molecular structure of tetraruthenium cluster isomers with different electron counts

被引：11

作者：

Braga, D

Grepioni, F

Brown, DB

Johnson, BFG

Calhorda, MJ

机构：

[1] UNIV CAMBRIDGE,DEPT CHEM,CAMBRIDGE CB2 1TN,ENGLAND

[2] UNIV NOVA LISBOA,INST TECNOL QUIM & BIOL,P-2780 OEIRAS,PORTUGAL

[3] IST,LISBON,PORTUGAL

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 26期

关键词：

D O I：

10.1021/om9602825

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The two novel cluster species Ru-4(CO)(12)(mu(4)-eta(2)-C8H10) (1) and Ru-4(CO)(12)(mu(4)-eta(2):eta(2)-C8H10) (2) have been isolated from the thermolysis of RU(3)(CO)(12) in octane in the presence of cycloocta-1,3-diene. The two clusters are isomers of formula Ru-4(CO)(12)(C8H10), differing only in the overall electron donation from the C8H10 ligand to the cluster. Clusters 1 and 2 possess 60 and 62 electrons, respectively, and both are based on a butterfly framework of metal atoms, as shown by single-crystal X-ray diffraction experiments. The bonding interaction between the ligand and the cluster as well as the effect of the extra pair of electrons in 2 with respect to 1 has been investigated by extended Huckel molecular orbital calculations.

引用

页码：5723 / 5728

页数：6

共 34 条

[1] TRINUCLEAR AND TETRA-NUCLEAR MU-ALKYNE CLUSTERS FROM [RU2(MU-CO)-(MU-C2R2)(ETA-C5H5)2] (R = PH OR CF3) [J].