Gold complexes phosphorus-donors

Phosphonium ylides, which can be written in the two familiar canonical forms, are available with a wide variety of substituents both at the phosphorus and at the carbon atoms (Scheme 30). In gold complexes, without any exceptions, they function as two-electron donors, as proposed by the dipolar form to give discrete Au-C cr-bonds (771, monohapto). No side-on, 7r-coordination (t 2), as might be expected out of the ylene form, has been observed to date. 

Schroder, D., Schwarz, H., Hrusak, J. and Pyykkd, P. (1998) Cationic gold(l) complexes of xenon and of ligands containing the donor atoms oxygen, nitrogen, phosphorus, and sulfur. Inorganic Chemistry, 37, 624—632. 

Figure 2.37 Complexes with phosphorus or boron donor ligands bridging three or four gold atoms...

COMPLEXES OF GOLD(I) WITH PHOSPHORUS, ARSENIC AND ANTIMONY DONOR... 

Large numbers of gold(I) complexes are reported in the literature, most involving ligands with the donor atoms phosphorus, arsenic, and sulfur. In preparing such... 

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