Article ID Journal Published Year Pages File Type
1235581 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2007 8 Pages PDF
Abstract

Cobalt(II) complexes of general composition [Co(L)X2] and [Co(L1)X2] where (X = NO3−, CH3COO−, Cl−, Br−, NCS−, (1/2)SO4−2); L = 5,11-diethyl-6,12-dimethyl-3,8-dithione-1,2,4,7,9,10-hexaaza cyclododeca-1,4,6,10-tetraene and L1 = 5,11-diethyl-6,12-dimethyl-3,8-dione-1,2,4,7,9,10-hexaaza cyclododeca-1,4,6,10-tetraene with tetradentate 12-membered macrocyclic ligands have been synthesized and characterized by elemental analysis, magnetic susceptibility, IR, electronic and electon spin resonance spectral studies. The various physico-chemical techniques suggest a coordination number six (octahedral geometry) for chloro, nitrato, bromo and thiocyanato complexes, and five-coordinated trigonal bipyramidal geometry for sulphato complexes. All the complexes are of high spin type showing magnetic moment corresponding to three unpaired electrons. All the complexes were also screened against bacteria and pathogenic fungi in vitro.

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Physical Sciences and Engineering Chemistry Analytical Chemistry
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