Synthesis, characterization and crystal structures of platinum(II) saccharinate complexes with 1,5-cyclooctadiene

Abstract

Two new platinum(II) complexes, namely [PtCl(sac)(COD)] ( 1) and [Pt(sac) 2 (COD)] (2) (sac = saccharinate and COD = 1,5-cyclooctadiene), were synthesized and characterized by elemental analysis, IR, NMR, ESI-MS spectroscopic and thermal analysis (TG/DTA) methods.The platinum(II) complexes were prepared from the reaction of [PtCl 2 (COD)] with Na(sac)•2H 2 O.The addition of the sac ligand resulted in the replacement of 1 and 2 chlorido ligands in [PtCl 2 (COD)] to yield 1 and 2, respectively.The structures of the complexes were determined by single crystal X-ray diffraction and showed a distorted square planar coordination geometry around platinum(II).COD acted as a π -donor ligand, while sac was N -coordinated in both complexes.The TG/DTA data indicated that both complexes were thermally stable up to 220 °C in air and their thermal decompositions yielded Pt as a final product.Complexes 1 and 2 were also designed as possible precursors to synthesize new mixed-ligand platinum(II) sac complexes in a one-pot reaction.