X-Ray crystal and molecular structure of dichloro-(4-methoxyphenyldi-imide-C2,N′)bis(triphenylphosphine)iridium–chloroform (1/1)

Abstract

Crystals of the title compound are triclinic, space group P, Z= 2, in a unit cell of dimensions: a= 12·55(2), b= 12·38(2), c= 15·55(2)Å, α= 103·07(7), β= 97·73(7), γ= 116·28(7)°. 3699 Independent structure factor moduli were measured by counter methods, and the structure refined by full-matrix least squares to R 0·035. The metal atom, which displays a distorted octahedral co-ordination, is bonded to the terminal nitrogen atom, to C(2) of the aryldi-imide moiety [Ir–N 1·990(7), Ir–C 2·011 (8)Å] and to two chloro-ligands [Ir–Cl 2·393(2) and 2·493(2)Å, the bond being trans to C(2) of the aryldi-imide group], and to two mutually trans phosphine ligands [Ir–P 2·376(2) and 2·364(2)Å]. There is evidence for the protonation of the nitrogen atom bonded to Ir.