Synthesis and properties of anionic tetrakis(pentafluorophenyl)indium(III) complexes

The anionic complexes, (In(C6F5)4)-, which are thermal and moisture sensitive, have been prepared by the reaction of (In(C6F5)3)·D (D=CH3CN, O(C2H5)2) with the system (CH3)3SiC6F5/CsF, C6F5MgBr or Cd(C6F5)2. The stable anionic indium(III) complexes are obtained through cation exchange with PNPCI ((PNP)=bis(triphenylphosphino)ammonium). The pure substance is obtained by column chromatography. These new anionic complexes are unambiguously identified by NMR-spectroscopy, IR spectroscopy, molecular weight, DTA/TG and elemental analysis