Synthesis of neutral iridium(III) and rhodium(III) complexes with the proligands Pr i2P(C 6H 4SH-2) [ priPSH] ; PhP(C 6H 4SH-2) 2 [ phPS 2H 2] and PhP(C 2H 4SH) 2 [ ePS 2H 2] . The X-ray crystal structures of [Ir( priPS) 3] and [Rh(H)( phPS 2)(CO)(PPh 3)

Abstract

The reactivity of the hybrid phosphorus–sulfur proligands pr iPSH, phPS 2H 2 and ePS 2H 2 with iridium and rhodium precursors has been explored. By reacting IrCl 3 with pr iPSH in the presence of NEt 3 as base, the octahedral Ir(III) specie [Ir( pr iPS) 3] was obtained and its crystal structure determined. Reactions of the potentially tridentated proligands phPS 2H 2 and ePS 2H 2 with trans-[MF(CO)(PPh 3) 2] (M=Rh and Ir) were also investigated. Complexes of general formula [M(H)( phPS 2)(CO)(PPh 3)] were obtained with phPS 2H 2. A single crystal X-ray structure determination for [Rh(H)( phPS 2)(CO)(PPh 3)] showed the complex to be octahedral. Reactions with the aliphatic proligand ePS 2H 2 afforded analogous species to those with phPS 2H 2.