Abstract

The perchlorato ligand of perchloratobis(pentafluorophenyl)triphenylphosphinegold(III) can easily be displaced by different types of ligands. Neutral complexes are obtained by adding anionic ligands (N − 3, HCO − 3, while cationic complexes are obtained by adding neutral monodentate ligands (OPPh 3, OAsPh 3, ONC 5H 5, ONC 9H 7, NC 9H 7, PEt 3, PBu 3, PPh 2Me). Only with very weak σ-donors (SO 2, CO 2, NC 5F 5, NC 5Cl 5) does no reaction take place. The addition of neutral bidentate ligands leads to cationic gold(III) complexes with diphosphines and diarsines, whereas nitrogen- or oxygen-donors give rise to reductive elimination reactions which lead to gold(I) complexes. No reaction takes place with mono-olefins while cyclopolyolefins give rather unstable gold(I) complexes which readily decompose. Only the gold(I) complex with 1,5-cyclooctadiene can be isolated.

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