The new compounds [In((S2PBu2)-Bu-i)(3)](1)and[Ga((S2PBu2)-Bu-i)(3)](2) have been synthesized and characterized. Whereas in the structure of compound 1 the metal center was found to be six-coordinate, the metal center in compound 2 is four-coordinate, being bound to only one chelating and two pendant diisobuty1dithiophsophinate ligands in a distorted tetrahedral geometry.