Some Platinum Group. Metal Complexes of Substituted Thiosemicarbazones

Sa？etak Complexes of Ru(III), Rh(III) and Pt(IV) with 1-salicyl-4- -benzylamidothiosemicarbazone (SBTS) and 1-(a-)furyl-4-benzylamidothiosemicarbazone (FBTS) have been prepared and their stereochemistry proposed on the basis of magnetic and electronic spectral studies. The ruthenium(llI) complexes reveal an anomalous magnetic behaviour which may possibly be attributed to a large spin-orbit coupling. The rhodium(III) and platinum(IV) complexes of SBTS conform to the octahedral geometry. Relevant ligan-field parameters, wherever possible, have been calculated. Infra-red studies indicate the (S, N) bidentate nature of FBTS, whereas SBTS acts as a (S, N, 0) tridentate ligand