Synthesis, characterization and biological activity of ternary copper(II) complexes containing polypyridyl ligands

rnary copper(II) complexes involving polypyridyl ligands in the coordination sphere of composition [Cu(tpy)(phen)](ClO4)(2) (1), [Cu(tpy)(bipy)](ClO4)(2) (2), [Cu(tptz)(phen)]ClO4)(2) (3) and [Cu(tptz)(bipy)](BF4)(2) (4) where tpy = 2,2':6',2-terpyridine, tptz = 2,4,6-tfi(2pyridyl)- 1,3,5-triazine, phen = 1, 1 0-phenanthroline and bipy = 2,2'-bipyridine have been synthesized and characterized by elemental analysis, magnetic susceptibility, X-band e.p.r. spectroscopy and electronic spectroscopy. Single crystal X-ray of (1) has revealed the presence of a distorted square pyramidal geometry in the complex. Magnetic susceptibility measurements at room temperature were in the range of 1.77-1.81 BM. SOD and antimicrobial activities of these complexes were also measured. Crystal data of (1): P- 1, a = 9.3010(7),angstrom, b = 9.7900(6) angstrom, c = 16.4620(6) angstrom, V-c = 1342.73(14) angstrom(3), Z= 4. The bond distance of Cu-N in square base is 2 +/- 0.04 angstrom. (c) 2005 Elsevier B.V. All rights reserved.