Abstract
The template condensation reaction between bis(diacetyl)-4-methyl-o-phenylenediamine with various diamines and metal salts in 1:1:1 resulted in mononuclear 12-membered tetraaza macrocyclic complexes [M = Co(II), Ni(II), Zn(II), and Cd(II)]. All complexes have been characterized by elemental analysis and various spectral techniques, that is, FT-IR, 1H NMR, mass and electronic studies. An octahedral geometry has been proposed for all these complexes. On the basis of the IR and NMR spectral data, the involvement of azomethine nitrogen in coordination with the central metal ion has been confirmed. The in vitro antibacterial studies of the complexes have been recorded against some pathogenic bacteria and the results are quite promising.
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