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Molecules 2009, 14(1), 174-190; doi:10.3390/molecules14010174
Article

Coordination Modes of a Schiff Base Pentadentate Derivative of 4-Aminoantipyrine with Cobalt(II), Nickel(II) and Copper(II) Metal Ions: Synthesis, Spectroscopic and Antimicrobial Studies

1,* , 2
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1 and 3
Received: 30 September 2008 / Revised: 21 November 2008 / Accepted: 2 December 2008 / Published: 1 January 2009
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Abstract

Transition metal complexes of Co(II), Ni(II) and Cu(II) metal ions with general stoichiometry [M(L)X]X and [M(L)SO4], where M = Co(II), Ni(II) and Cu(II), L = 3,3’-thiodipropionic acid bis(4-amino-5-ethylimino-2,3-dimethyl-1-phenyl-3-pyrazoline) and X = NO3-, Cl- and OAc-, have been synthesized and structurally characterized by elemental analyses, molar conductance measurements, magnetic susceptibility measurements and spectral techniques like IR, UV and EPR. The nickel(II) complexes were found to have octahedral geometry, whereas cobalt(II) and copper(II) complexes were of tetragonal geometry. The covalency factor (β) and orbital reduction factor (k) suggest the covalent nature of the complexes. The ligand and its complexes have been screened for their antifungal and antibacterial activities against three fungi, i.e. Alternaria brassicae, Aspergillus niger and Fusarium oxysporum and two bacteria, i.e. Xanthomonas compestris and Pseudomonas aeruginosa.
Keywords: 4-Aminoantipyrine derivative; Metal complexes; Biological activities 4-Aminoantipyrine derivative; Metal complexes; Biological activities
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Chandra, S.; Jain, D.; Sharma, A.K.; Sharma, P. Coordination Modes of a Schiff Base Pentadentate Derivative of 4-Aminoantipyrine with Cobalt(II), Nickel(II) and Copper(II) Metal Ions: Synthesis, Spectroscopic and Antimicrobial Studies. Molecules 2009, 14, 174-190.

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