Bis(Saccharinato)Palladium and Platinum(II) Complexes with 2,2′-Bipyridine: Syntheses, Structures, Spectroscopic, Fluorescent and Thermal Properties

Abstract

New palladium(II) and platinum(II) complexes, cis-[Pd(bpy)(sac)<inf>2</inf>] (1) and cis-[Pt(bpy)(sac)<inf>2</inf>] (2), where sac = saccharinate, bpy = 2,2′-bipyridine, have been synthesized and characterized by elemental analysis, UV-Vis, IR, 1H NMR and 13C NMR. The structures of the DMSO solvated complexes are determined by X-ray diffraction. Both complexes are isomorphous and the metal ions are coordinated by two N-bonded sac ligands, and two nitrogen atoms of pyridyl groups of bpy in a cis fashion. The mononuclear species interact each other through weak intermolecular C-H⋯O hydrogen bonds, C-H⋯π and π⋯π interactions leading to three-dimensional supramolecular networks. All complexes exhibit a high thermal stability in the solid state, and are fluorescent in the solution. © 2010 Elsevier Ltd. All rights reserved.