Homo and Dinuclear Heteroleptic Zn, Cd & Pb Complexes Derived from FcCOOH and DTBbpy Ligands: Structural, Luminescence and Electrochemical Studies

  • Kabali Senthilkumar
  • Matti Haukka
  • Palanisami Nallasamy


Mononuclear [Zn(FcCOO)(DTBbpy)2]ClO4.(H2O)3 (1) and dinuclear [Cd2(FcCOO)2(DTBbpy)4]ClO4·(H2O) (2), [Pb2(FcCOO)2(DTBbpy)2(H2O)2]·ClO4 (3) (FcCOO = ferrocenecarboxylate, DTBbpy = 4,4′-di-tert-butyl-bipyridyl) metal complexes have been synthesized and characterized by single crystal X-ray diffraction. It reveals that the Zn(II), Cd(II) and Pb(II) metal complexes have different coordination geometries [Zn and Pb = distorted octahedral, Cd = distorted pentagonal bipyramidal]. The compound 3 shows the hemidirected mode of coordination in the geometrical system due to the inert pair effect of the lone pair of an electron on Pb(II) metal atom. The molecules are further forms 2D & 3D framework structure via intermolecular hydrogen bonding. All the three compounds exhibit strong fluorescence emission bands in the liquid state at ambient temperature, of which the emission maxima show red-shifted and the solution-state electrochemistry of compounds 13 in CH3CN has been investigated.


Ferrocenecarboxylic acid 4,4′-di-tert-butyl-bipyridyl Hemidirected Luminescent Cyclic voltammetry 



KSK thanks to DST for Inspire fellowship (IF-110138). Authors thanks to NCUFP-Taramani, Chennai for time-resolved lifetime measurement and SAIF, IIT Madras for providing the single crystal XRD data for compounds 1 and 3.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Kabali Senthilkumar
    • 1
  • Matti Haukka
    • 2
  • Palanisami Nallasamy
    • 1
  1. 1.Department of Chemistry, School of Advanced SciencesVIT UniversityVelloreIndia
  2. 2.Department of ChemistryUniversity of JyväskyläJyväskyläFinland

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