Oligomeric gold complexes

Figure 1.31 Oligomeric gold(l) complexes with carbon donor ligands.

Ferrocenylphosphine-gold complexes, 225 Formaldehyde oligomerization, 332 Formic acid, transfer hydrogenation, 123 Formulas, chiral compounds, xiii-xvii Four-dimensional chemistty. See Asymmetric catalysis... 

Desmet, M., Raubenheimer, H.G. and Kruger, G.J. (1997) Synthesis and Characterization of Thienyl Oligomeric, Carbene, and Nitrogen-Donor Complexes of Gold(I). Organometallics, 16(15), 3324-3332. 

The coordination chemistry of tertiary phosphine-functionalized calix[4]arenes have been described.279 Treatment of a bis(diphenylphosphino) or bis(dimethylphosphino) derivative of calix[4]arene with [PtCl2(COD)] leads to the formation of the corresponding dichloroplatinum(II) complex. The related diplatinum(II) species has also been reported with the tetrafunctionalized calix[4]arene.280 The mononuclear derivative is susceptible to oligomerization if the two free phosphine ligands are not oxidized or complexed to another metal center such as gold(I).279 The platinum(II) coordination chemistry of a mono-281 and diphosphite282 derived calix[ ]arene (n = 4 and 6, respectively) has also been described. 

These occur more commonly than terminal phenyl ligands, presumably because of the increased M-C contact as indicated (Fig. 3, type B). Copper(I), silver(I) and gold( I) compounds with these bridges are particularly well studied.A number of binary aryl transition metal complexes of the type MjAry have been synthesized. Those with bulky aryls such as mesityl (mes) or perfluorophenyl are the most tractable, the bulk preventing further oligomerization or polymerization. Some... 

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