Synthesis, experimental and theoretical characterization of palladium(II) and platinum(II) saccharinate complexes with 2-(2-pyridyl)benzimidazole

Guney E., Kaya Y., YILMAZ V. T., Gumus S.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.79, no.5, pp.1171-1178, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1016/j.saa.2011.04.038
  • Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1171-1178
  • Keywords: Saccharinate, 2-(2-Pyridyl)benzimidazole, Palladium(II), Platinum(II), DFT, VIBRATIONAL FREQUENCIES, CRYSTAL-STRUCTURES, LIGANDS, BENZIMIDAZOLE, FLUORESCENT, CHEMISTRY, POLYMERS, ZINC(II), PT(II)
  • Karadeniz Technical University Affiliated: No

Abstract

New palladium(II) and platinum(II) complexes of saccharinate (sac) with 2-(2-pyridyl)benzimidazole (pybim) have been synthesized and characterized by elemental analysis and spectroscopic techniques. From the experimental studies, these complexes were formulated as [Pd(pybim)(sac)(2)] (1), and [Pt(pybim)(sac)(2)]center dot 4H(2)O (2). The ground-state geometries of both complexes were optimized using density functional theory (DFT) methods at the B3LYP level. A bidentate pybim ligand together with two N-coordinated sac ligands form the square-planar MN4 coordination geometry around the palladium(II) and platinum(II) ions. The calculated IR and UV-vis spectral data have been correlated to the experimental results. Thermal analysis data support the molecular structures of both complexes. (C) 2011 Elsevier B.V. All rights reserved.