Abstract
The reaction of [Os4H4(CO)11]2- 2, formed by the reduction of [Os4H4(CO)12] 1 with K/Ph2CO, with the cation [Rh(η5-Cp*)(MeCN)3]2+ (Cp*=C5Me5) 3, affords a number of penta- and hexanuclear mixed-metal clusters depending on the reaction conditions. If only sufficient K/Ph2CO is added to dissolve all of 1, and the dication 3 added, a low yield of a blue cluster [Os4Rh(μ-H)3(MeC=NH)(CO)11(η 5-Cp*)] (Cp*=C5Me5) 4 is obtained in addition to large quantities of 1. If an excess of K/Ph2CO is added so that reduction of 1 is complete, and then the dication 3 added, two new products [Os4Rh(μ-H)2(CO)13(η 5-Cp*)] 5 and [Os4Rh2(μ-H)2(CO)11(η 5-Cp*)2] 6 are obtained in low yield. The three new complexes have been characterised spectroscopically and crystallographically. Cluster 4 contains the uncommon MeC=NH group coordinated to an edge-bridged tetrahedral metal framework. The metal framework in 5 is also a Rh edge-bridged Os4 tetrahedron while that of 6 is a bicapped tetrahedron, with two Rh atoms face capping two faces of an Os4 tetrahedron.
Original language | English |
---|---|
Pages (from-to) | 237-246 |
Number of pages | 10 |
Journal | Journal of Organometallic Chemistry |
Volume | 573 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 31 Jan 1999 |
Keywords
- Cluster
- Crystal structures
- Cyclopentadienyl
- Osmium
- Rhodium
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry