Syntheses, Spectroscopic, Structural, Fluorescent and Thermal Properties of Bis(saccharinato)copper(II) Complexes with two Bis(pyridylamine) Ligands


Guney E., YILMAZ V. T. , Sengul A., Buyukgungor O.

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, vol.637, no.2, pp.246-250, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 637 Issue: 2
  • Publication Date: 2011
  • Doi Number: 10.1002/zaac.201000347
  • Journal Name: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.246-250
  • Keywords: Saccharinate, Bis(2-pyridylmethyl)amine, N,N '-Bis[1-(pyridin-2-yl)ethylidene]ethane-1,2-diamine, Copper, Fluorescence, SCHIFF-BASE LIGAND, METAL-COMPLEXES, PLATINUM(II) COMPLEXES, MOLECULAR-STRUCTURES, CRYSTAL-STRUCTURE, PERCHLORATE, DI-(2-PICOLYL)AMINE, DIPYRIDYLAMINE, COORDINATION, SACCHARIN
  • Karadeniz Technical University Affiliated: No

Abstract

Two new copper(II) complexes of saccharinate (sac) with bis(2-pyridylmethyl)amine (bpma) and N,N'-bis[1-(pyridin-2-yl)ethylidene]ethane-1,2-diamine (bapen), [Cu(bpma)(sac)2]center dot H2O (1) and [Cu(bapen)(sac)2] (2), were synthesized and characterized by elemental analysis, TG-DTA, X-ray diffraction, and UV/Vis and IR spectroscopy, respectively. In 1, the copper(II) ion is coordinated by two N-bonded sac ligands, and three nitrogen atoms of bpma, in a distorted square-pyramidal coordination arrangement, whereas the arrangement around the copper ion in 2 is a distorted octahedron with two N-coordinated sac ligands and a tetradentate bapen ligand. In addition to hydrogen bonding involving the water molecule in 1, the mononuclear species of 1 and 2 arc further connected by weak intermolecular C-H center dot center dot center dot pi and C-H center dot center dot center dot O interactions to form a three-dimensional network. Both complexes are luminescent at room temperature and their emissions seem to be due to ligand-based it pi-pi* transitions.