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Journal of Coordination Chemistry
Year: 2009  |  Volume: 62  |  Issue: 18  |  Page No.: 2995 - 3002

Synthesis, spectral, and antibacterial studies of 16-membered tetraazamacrocyclic complexes

D. P. Singh, Ramesh Kumar, Monika Kamboj and Kiran Jain    

Abstract: A new series of macrocyclic complexes [M(C24H28N4)X2], where M = Co(II), Ni(II), Cu(II), or Zn(II) and X = Cl-,  NO-3, or CH3COO-, has been synthesized by [2+2] condensation of o-phenylenediamine with acetonylacetone (diacetonyl) in the presence of divalent metal ions. The complexes have been characterized by elemental analyses, conductance measurements, electronic, NMR, and infrared spectral studies. On the basis of these studies, a distorted octahedral geometry has been proposed for all of these complexes. The complexes were tested for in vitro antibacterial activity. Some show remarkable antibacterial activity against selected bacterial strains.

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