Rhodium chalcogenides

The Goodenough model (10) can account for the electrical properties of ternary rhodium chalcogenides of the type ARh2X4. The octa-hedrally coordinated Rh3+(4d6) has the low-spin configuration, and no contribution to the conductivity is made either by direct interaction of the cation t2g orbitals or by indirect e -anion s,pa interaction. This is not the case, however, for the M cations in the MRh2X4 compounds. For example, Ni2+(f2/e/) may contribute to metallic conductivity via formation of partially-filled or bands as a result of nickel e -anion s,pa interactions. Similar considerations apply to the other ternary rhodium chalcogenides. 

Tributylphosphine sulfide has been used as a co-catalyst with dicobalt octacarbonyl for the Pawson-Khand reaction. Thermolysis of a mixture of cadmium chloride and trioctylphosphine sulfide at 250 °C has been used as a route to the formation of nanocrystalline cadmium sulfide." A complex of triphenylphosphine sulfide with a silver-tungsten-iodine acceptor has been characterised by X-ray studies. Ferrocenylphosphine chalcogenides have attracted considerable interest as ligands. Complexes of the monophosphino-phosphine sulfide (269) with rhodium have been characterised." The disulfide (270) forms complexes with both gold(i) and gold(iii) acceptors," and a silver(i) complex of the diselenide (271) has been prepared. ... 

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