Syntheses, thermal analyses, crystal structures, FT-IR and Raman spectra of 2D [Zn(NH3)(2)(mu-ampy)M '(mu-CN)(2)(CN)(2)](n) (M ' = Ni(II), Pd(II) or Pt(II)) complexes


POLYHEDRON, vol.62, pp.286-292, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62
  • Publication Date: 2013
  • Doi Number: 10.1016/j.poly.2013.06.049
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.286-292
  • Keywords: Heteronuclear complexes, Tetracyanonickellate(II), Tetracyanopalladate(II), Tetracyanoplatinate(II), 4-Aminomethylpyridine complex, 2D structures, HETERONUCLEAR POLYMERIC COMPLEXES, BRIDGED BIMETALLIC COMPLEXES, MAGNETIC-PROPERTIES, COORDINATION POLYMERS, TETRACYANONICKELATE(II), BEHAVIOR, ZINC(II), CD(II), ZN(II), AMPY=2-AMINOMETHYLPYRIDINE
  • Eskisehir Osmangazi University Affiliated: Yes


Three new cyano-bridged heteronuclear polymeric complexes, [Zn(NH3)(2)(mu-ampy)Ni(mu-CN)(2)(CN)(2)](n) (1), [Zn(NH3)(2)(mu-ampy)Pd(mu-CN)(2)(CN)(2)](n) (2) and [Zn(NH3)(2)(mu-ampy)Pt(mu-CN)(2)(CN)(2)](n) (3) (ampy = 4-aminomethylpyridine) have been synthesized and characterized by vibrational spectroscopy (FT-IR and Raman), thermal (TG, DTG and DTA) and elemental analyses. The crystal structures of complexes 1 and 2 have been determined by the X-ray single crystal diffraction technique. Complexes 1 and 2 crystallize in the triclinic system with the space group P (1) over bar. Structural studies reveal that the Ni(II) or Pd(II) ions are four coordinate with four cyanide-carbon atoms in a square planar geometry and the Zn(II) ion exhibits a distorted octahedral coordination geometry completed by the six N atoms from two ammine, one ampy and two cyano ligands. The adjacent metal centers are bridged by bis-monodentate cyano ligands to form a one-dimensional linear chain. These chains are linked by ampy ligands into a 2D sheet structure. The 2D units are connected together via intramolecular C-H center dot center dot center dot N and intermolecular N-H center dot center dot center dot N hydrogen bonding to form 3D supramolecular networks. In additional, there are also interactions between the Ni(II) or Pd(II) ion and the aromatic pi-system. Vibrational spectral data indicate the presence of two v(C N) bands for the complexes, which can be assigned to the terminal and bridging cyanide ligands. Decomposition reactions take place in the temperature range 40-900 degrees C in a static air atmosphere. (c) 2013 Elsevier Ltd. All rights reserved.