Gold phosphine ligands, homoleptic

Homoleptic Gold(I) Complexes with Phosphine Ligands. 272... 

In the many attempts to synthesize homoleptic polyauriomethanes C(AuPR3)4, the preparation has only been successful if phosphine ligands of sufficient steric bulk were employed. Tetrakis[(tricyclohexylphosphine)gold(I)]methane is obtained from a mixture of C[B(OMe)2]4, [AuC1 P(oC6Hh)3 ] and CsF as a colourless crystalline solid with the expected tetrahedral array of gold atoms around the central carbon atom165. 

For a homoleptic series of gold(I) complexes, AUL2" ", AUL3+, AUL4+, the 5p nipiex values shift upheld toward that of the free phosphine as the number of bound ligands increases and, consequently, the coordination chemical shift, A3p , decreases in the... 

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