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We report the synthesis and structural characterisation of three five co-ordinate indium(III) bis-chelate complexes of imidodiphosphinates with general formula InCl{N(PR2X)2}2, (R=Ph or Pri, X=S or Se), formed from the 1:2 reaction of indium(III) trichloride and the potassium or sodium salt of the ligand in methanol/THF. The complexes consist of discrete monomeric, molecules and show a trigonal–bipyramidal co-ordination pattern. These are the first examples of five co-ordinate complexes containing this type of ligand, in contrast to other indium(III) and main group element complexes of similar ligands in which only the six co-ordinate tris-chelates are known. 相似文献
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