Synthesis, Spectral, Thermal and Structural Characterization of Mer-Triaquaorotatoquinoxaline Cadmium(II) Dihydrate

Abstract

The new orotate complex of cadmium(II) with quinoxaline, mer-[Cd(HOr)(H<inf>2</inf>O)<inf>3</inf>(QX)]·2H<inf>2</inf>O, was synthesized and characterized by elemental analysis, FT - IR spectroscopy, thermal analysis and single crystal X-ray diffraction techniques. The complex crystallizes in the triclinic system, space group P1̄. The Cd2+ ion exhibits a distorted octahedral coordination by one bidentate orotate, one monodentate quinoxaline and three aqua ligands. The uncoordinated water molecules link the orotate, quinoxaline and aqua ligands via O-H⋯O, O-H⋯N hydrogen bonds. Thus, an extensive network of hydrogen bonds stabilizes the crystal structure and form an infinitive three dimensional lattice. The decomposition reaction takes place in the temperature range 20-700°C in the static air atmosphere. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.