Spectroscopic and biological approach in the characterization of Cr(III), Mn(II) and Co(II) complexes with a novel hexaazamacrocyclic ligand derived from semicarbazide
Author(s) -
Sulekh Chandra,
Archana Gautam
Publication year - 2009
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0912413c
Subject(s) - semicarbazide , ligand (biochemistry) , chemistry , electron paramagnetic resonance , octahedral molecular geometry , octahedron , magnetic susceptibility , metal , crystallography , elemental analysis , proton nmr , stereochemistry , inorganic chemistry , nuclear magnetic resonance , organic chemistry , crystal structure , biochemistry , physics , receptor
Complexes of Cr(III), Mn(II) and Co(II) with a novel 5,7,12,14-tetraphenyl-1,2,4,8,10,11-hexaazacyclotetradecane-3,9-dione macrocyclic ligand, THTD (L), were synthesized and characterized by elemental analysis, molar conductance and magnetic susceptibility measurements, as well as by mass, 1 H-NMR, IR, electronic and EPR spectral studies. Based on the spectral studies, an octahedral geometry was assigned for the Cr(III), Mn(II) and Co(II) complexes. The ligand and its complexes were screened in vitro against some species of bacteria and plant pathogenic fungi. The metal complexes were found to be more active antimicrobial agents than the free ligand from which they were derived.
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