Issue 4, 1994
From the journal:

Journal of the Chemical Society, Dalton Transactions

Phosphine-substituted trigonal-prismatic and octahedral clusters

Thierry Blum,   Michael P. Brown,   Brian T. Heaton,   Andy S. Hor,   Jonathan A. Iggo,   Javad S. Z. Sabounchei  and  Anthony K. Smith  

Abstract

The cluster [Rh6C(CO)15]2– reacts with PPh3 under mild conditions to give [Rh6C(CO)14(PPh3)]2–, the first reported substituted carbido cluster of rhodium with a trigonal-prismatic structure, which has been characterised by multinuclear NMR measurements (13C, 31P and direct 103Rh). Thermal decarbonylation of [Rh6C(CO)14(PPh3)]2– gives the octahedral cluster [Rh6C(CO)12(PPh3)]2– which has been characterised by X-ray crystallography: space group P21/c, a= 12.837(3), b= 22.60(1), c= 21.181 (4)Å, Z= 4, R= 0.048, and R′= 0.055. The substituent PPh3 is in the same plane as dppe (Ph2PCH2CH2PPh2) in [Rh6C(CO)11(dppe)]2– but substitution has not occurred at the same site. The fluxional behaviour of both the PPh3- and diphosphine-substituted octahedral clusters have been established from detailed multinuclear NMR variable-temperature measurements.

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Article information

DOI
https://doi.org/10.1039/DT9940000513
Article type
Paper

J. Chem. Soc., Dalton Trans., 1994, 513-520

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Phosphine-substituted trigonal-prismatic and octahedral clusters

T. Blum, M. P. Brown, B. T. Heaton, A. S. Hor, J. A. Iggo, J. S. Z. Sabounchei and A. K. Smith, J. Chem. Soc., Dalton Trans., 1994, 513 DOI: 10.1039/DT9940000513

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