Synthesis and Characterization of the 1 : 1-Adducts of In(C6F5)3 with Acetonitrile, Glyme, and DMAP (DMAP = 4-(N,N-dimethylamino)pyridine), and [PNP][In(C6F5)4] (PNP = bis(triphenylphosphinanyliden)immonium) - the Crystal Structure of [PNP][In(C6F5)4]

Abstract

In(C6F5)3 · CH3CN and In(C6F5)3 · glyme were synthesized from InCl3 and Cd(C6F5)2 in CH3CN or glyme in 43% and 35% yield, respectively. Replacement of CH3CN or (C2H5)2O by DMAP yielded the corresponding 1 : 1-adduct. [PNP][In(C6F5)4] was best prepared from the corresponding cesium salt which was best synthesized from the reaction of stoichiometric amounts of In(C6F5)3 · CH3CN, (CH3)3 SiC6F5 and CsF in good yield. [PNP][In(C6F5)4] crystallizes in the triclinic space group P 1, a = 1104.9(4) pm, b = 1442.4(6) pm, c = 1833.8(8) pm, α = 110.87(2)°, β = 92.04(3)°, γ = 96.55(3)°, Z = 2.