Abstract
The reaction of the di-gold cation [Au2(dppx)]2+ with the heptanuclear cluster dianion [Os7(CO)20]2- affords the mixed metal cluster [Os7(CO)20{Au2 (dppx)}] (x = m (1), e (2), b (3)). On standing, in solution, this complex undergoes decarbonylation to give the cluster [Os7(CO)19{Au2(dppx)}] (x = m (4), e (5), b (6)). The complexes have been characterised spectroscopically, and an X-ray structure determination of the dppm derivative shows that it contains a metal core based on an Os7 edge-bridged bicapped tetrahedron with the two μ3-Au atoms capping adjacent triangular Os3 faces of the central tetrahedron. In an analogous reaction, the carbido anion [Os7(H)C(CO)19]- affords the neutral cluster [Os7C(CO)19{Au2(dppm)}] (7) when treated with [Au2(dppm)]2+ in the presence of base.
Original language | English |
---|---|
Pages (from-to) | 217-226 |
Number of pages | 10 |
Journal | Journal of Cluster Science |
Volume | 11 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2000 |
Funding
We gratefully acknowledge the Engineering and Physical Science Research Council (EPSRC) (S.L.I.), the Cambridge Commonwealth Trust and the UK Committee of Vice Chancellors and Principals (Z.A.), the Cambridge Crystallographic Data Centre (G.P.S.) for financial support. A.M.M.C. wishes to thank the Spanish Ministry of Education and the British Council for a grant and for study leave. We thank Johnson Matthey for the loan of heavy metal salts.
Keywords
- Carbonyl
- Cluster
- Crystal structure
- Gold
- Heteronuclear
- Osmium
- Phosphine
ASJC Scopus subject areas
- Biochemistry
- General Chemistry
- General Materials Science
- Condensed Matter Physics