Abstract

Abstract Pd(II), Pt(II), Rh(III), Ir(III) and Ru(III) complexes of semicarbazones of methyl-n-hexylketone and methyl-n-pentylketone have been prepared and characterised by elemental analysis, magnetic moments, i.r. and electronic spectral studies. These complexes were found to have the composition of M(ligand)2Cl2 (M = Pd or Pt) and M(Ligand)3Cl3 (M = Rh, Ir and Ru). All the complexes are diamagnetic except Ru(ligand)3Cl3, which is paramagnetic. Pd(II), and Pt(II) complexes are of square planar geometry. Rh(III), Ru(III) and Ir(III) complexes are six-coordinate octahedral. Various ligand field parameters have been calculated and discussed.

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