Synthesis of New Bismuth Complexes [Ph_3MeP]_6[BiI_3Br_3][Bi_2I_6Br_3]H_2O_2 and [Ph_3MeP]_6[BiI_3Br_3][Bi_2I_6Br_3]

摘要

The reaction of tetraphenylphosphonium iodide with bismuth triiodide in dimethyl sulfoxide at room temperature yields the bismuth complex [Ph_4P]_2[BiI_5 centre dot DMSO] [1].Here we report on the synthesis of the complex [Ph_3MeP]_6[BiI_3Br_3][Bi_2I_6Br_3]H_2O_2 (I),which was prepared under similar conditions from triphenylmethylphosphonium bromide and bismuth triiodide in the presence of atmospheric oxygen and moisture.Irrespective of the reactant ratio,the major reaction product is complex I;its maximal yield (98%) is reached at 2 :1 molar ratio of triphenyl-methylphosphonium bromide to bismuth triiodide.