Synthesis and Structural Characterization of Phosphanide Gold(III)/Gold(I) Complexes and Their Thallium(III) and Gold(III) Precursors

In this paper, we describe a series of diphenylphosphane and diphenylphosphanide gold(III) and gold(III)/gold(I) complexes containing 3,5-C6Cl2F3 as aryl ligands at gold that have been synthesized due to the arylating and oxidant properties of the new polymeric thallium(III) complex [TlCl(3,5-C6Cl2F3)(2)](n) (1). Its reaction with [Au(3,5-C6Cl2F3)(tht)] (tht = tetrahydrothiophene) produces the gold(III) complex [Au(3,5-C6Cl2F3)(3)(tht)] (2), which allows the synthesis of the diphenylohosphane derivative [Au(3,5-C6Cl2F3)(3)(PPh2H)] (3). Its treatment with acetylacetonate gold(I) derivatives leads to two novel Au-III/Au-I phosphanido-bridged complexes, [PPN][Au(3,5-C6Cl2F3)(3)(mu-PPh2)AuCl] (4) and [PPN][{(3,5-C6Cl2F3)(3)Au(mu-PPh2)}(2)Au] (5). All these complexes have been characterized, and the crystal structures of 1, 2, 4 and 5 have been established by single crystal X-ray diffraction methods, showing a novel polymeric arrangement in 1.

Automated summary

This paper describes the synthesis of a series of diphenylphosphane and diphenylphosphanide gold(III) and gold(III)/gold(I) complexes with 3,5-C6Cl2F3 aryl ligands. The reactions of a new polymeric thallium(III) complex with different gold compounds result in the formation of these complexes. The crystal structures of some of these complexes have been determined.