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  • Chem Sci Trans., 2016, 5(4),  pp 852-865  

    DOI:10.7598/cst2016.1290

    Research Article

    Mixed-Ligand Complexes of Bis(4,4ʹ-DiMeBipy-2,2ʹ-bipyridine)copper(II) Perchlorate with Pseudohalide Ligands: Synthesis, Characterization and X-ray Structures

  • OLUWAFUNMILAYO F. ADEKUNLE*, RAY BUTCHER, OLADAPO BAKARE and OLUSEGUN A.ODUNOLA
  • Department of Pure and Applied Chemistry, LadokeAkintola University of Technology, P.M.B.4000, Ogbomoso, Nigeria
    Department of Chemistry, Howard University, Washington DC, USA
    Department of Chemistry, Hallmark University, Ijebu-Itele, Nigeria
  • Abstract

    The synthesis, characterization and single crystal x-ray diffraction studies of [Cu(4,4ʹ-DimeBipy)2(N3)]2(ClO4)2.CH3CN (1), [Cu(4,4ʹ-DimeBipy) 2 (NCS)](SCN) (2) and [Cu(4,4ʹ-Dime Bipy) 2 (Cl)] 2 (ClO4) 2 H2O.CH3CN (3) are reported. The complexes were characterized by employing elemental analyses (CHN), infrared and UV-Visible spectroscopy and single crystal x-ray diffraction. Compound (1) is monoclinic, with a = 10.8606(12) , b = 34.533(4) , c = 14.4465(16) , β = 103.495(2)o, P 21/c space group, with final R1= 0.0497, wR2 = 0.1151, compound (2) also is monoclinic with a = 22.837(2) , b = 8.3902(7) , c = 13.7627(11) , β = 90.024(3)?, P 2/c space group, with final R1= 0.0939, wR2 = 0.2627 while compound (3) is triclinic, with a = 11.1857(9), b = 14.2140(12) , c = 17.7116(14) , α = 106.698(4)o, β = 93.267(4)o, γ = 104.241(4)o, P -1space group, with final R1= R1 = 0.0602, wR2 = 0.1612. The elemental analyses in conjunction with the x-ray experiment gave the formula for compounds (1), (2) and (3). The CuN5 chromospheres in (1) and (2) and CuN4Cl in (3) each has the Cu atom to be five- coordinate in a square pyramidal geometry with four N atoms from the 2,2ʹ-bipyridine derivative in the basal plane and N atom of the azide ligand (1), the N atom of the isothiocyanate ligand (2) and chloride ligand (3) occupying the apical positions.

    Keywords

    Azide ligand, P-1 Space group, Chromophores, Monoclinic, 4,4ʹ-DimeBipy, Basal plane

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