Transition Metal Chemistry

, Volume 37, Issue 4, pp 393–397

Synthesis and characterization of cobalt(II), nickel(II), copper(II) and zinc(II) complexes of 2-nitrobenzoic acid with methyl carbazate as ancillary ligand. Crystal structure of the copper(II) complex

  • Ayyasami Kathiresan
  • Krishnan Srinivasan
  • Selvaraj Brinda
  • Munirathinam Nethaji
  • Subbaiah Govindarajan


Divalent metal complexes of general formula [M(2-nb)2(mc)2].2(2-nbH), where M = Co(II), Ni(II), Cu(II) or Zn(II), 2-nbH = 2-nitrobenzoic acid and mc = methyl carbazate (NH2NHCOOCH3), have been prepared and characterized by physicochemical and spectroscopic methods. Single-crystal X-ray study of the Cu(II) complex revealed that the molecule is centrosymmetric, with two N,O-chelating mc ligands in equatorial positions and a pair of monodentate 2-nb anions in the axial positions. The lattice 2-nbH molecules help to establish the packing of monomers through hydrogen-bonding interactions. Thermal stability and reactivity of the complexes were studied by TG–DTA. Emission studies show that these complexes are fluorescent.

Supplementary material

11243_2012_9601_MOESM1_ESM.docx (223 kb)
Supplementary material 1 (DOCX 222 kb)


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Ayyasami Kathiresan
    • 1
  • Krishnan Srinivasan
    • 2
  • Selvaraj Brinda
    • 3
  • Munirathinam Nethaji
    • 3
  • Subbaiah Govindarajan
    • 1
  1. 1.Department of Chemistry, School of Chemical SciencesBharathiar UniversityCoimbatoreIndia
  2. 2.Department of ChemistryThiruvalluvar UniversitySerkkadu, VelloreIndia
  3. 3.Department of Inorganic and Physical ChemistryIndian Institute of ScienceBangaloreIndia

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