Synthesis of bismuth complexes from bismuth iodide and ammonium and phosphonium salts

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Abstract
The complexes [Et2NH2] 3 + [BiCl6]3− (I), [NH4]+[BiI4(C5H5N)2]−·2C5H5N (II), [Ph3MeP] 2 + [BiI5]2− (III), [Ph3MeP] 2 + [BiI5(C5H5N)]2−·C5H5N (IV), [Ph3MeP] 3 + [Bi3I12]3− (V), [Ph3(i-Pr)P] 3 + [Bi3I12]3−·2Me2C=O (VI), [Ph3BuP] 2 + [Bi2I8·2Me2C=O]2− (VII), and [Ph3BuP] 2 + [Bi2I8·2Me2S=O]2− (VIII) were obtained by reactions of bismuth iodide with ammonium and phosphonium iodides in acetone, pyridine, or dimethyl sulfoxide.