Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 60, Issue 7, Pages 1563-1571Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2003.08.023
Keywords
macrocyclic; cobalt(II); nickel(II); copper(II)
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Cobalt(II), nicke](11) and copper(11) complexes having the general composition M(L)X-2 (where M = Co(II), Ni(II) and Cu(II), L = ligand, i.e. 3,4,12,13-tetraketo-2,5,11,14,19,20-hexaazatricyclo[13.3.1.1(6-10)]cosane; 1(19),6,8,]0(20),15,17-hexaene and X stands for Cl-; NO3- and SO42-), have been prepared. The structure of the complexes has been elucidated by elemental analysis, molar conductance, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies. The magnetic moment measurements of the complexes indicate that the metal ion is in high-spin state. On the basis of IR, electronic and EPR spectral studies an octahedral geometry was assigned for Co(11) and Ni(11) complexes whereas tetragonal geometry for Cu(11) complexes. This ligand and its complexes were also screened against bacteria and pathogenic fungi in vitro. (C) 2003 Elsevier B.V. All rights reserved.
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