203586-20-3Relevant academic research and scientific papers
Metal core rearrangements in hetero-bimetallic nona-osmium carbonyl clusters; the crystal and molecular structures of [Os9(CO)24{Au(PCy3i)}2] and [Os9(CO)23(Au2DPPE)]
Akhter, Zareen,Ingham, Scott L.,Lewis, Jack,Raithby, Paul R.
, p. 131 - 139 (1998)
The reaction of the nona-osmium cluster dianion [(Ph3P)2N]2[Os9(CO)24] with the electrophilic gold reagents AuPR+3 and Au2L2+ (where R = Ph (2a, 3a), Cy (2b, 3b) and L = bis-(diphenylphosphino)methane (DPPM) (1a) or 1,2-bis-(diphenyl)ethane (DPPE) (1b)) has been studied. The monogold fragment reacts to give both the mono- and di-substituted products [(Ph3P)2N][Os9(CO)24{Au(PR 3)}2] and [Os9(CO)24{Au(PR3)}2]. The structure of the latter cluster (R = Cy (2b)) has been determined by a single crystal X-ray diffraction analysis and a major rearrangement of the metal core geometry was found to have occurred on coordination of the gold fragments. In contrast, reaction with the digold reagent Au2L2+ results in the isolation of only one product of formulation [Os9(CO)23(Au2L)], where coordination of the heteroatom moiety has been accompanied with the loss of a carbonyl ligand. From a single crystal X-ray diffraction analysis (L = DPPE (1b)) this compound was shown to have retained its original cluster geometry, with the gold atoms coordinated in close proximity to each other.
