A.O.  Aliyu, J.N.  Nwabueze, 
    Studies on the Complexation of Cobalt (II) with Isonicotinohydroxamic Acid and It’s Microbial Sensitivity,
    Research Journal of Medical Sciences,
    Volume 3,Issue 5,
    2009,
    Pages 170-174,
    ISSN 1815-9346,
    rjmsci.2009.170.174,
    (https://makhillpublications.co/view-article.php?doi=rjmsci.2009.170.174)
    Abstract: A spectroscopic investigation of the reaction of Co<SUP>2+</SUP> with isonicotinohydroxamic acid (INHAH) in aqueous solution of I = 0.1 moL dm<SUP>-3</SUP> at 25°C reveals the sole formation of 1: 2 complex, spectral and magnetic studies on the isolated complex indicate an octahedral geometry with an O, N coordination mode for the ligand. Microbial sensitivity test on eight microorganism shown an enhanced antimicrobial activity for the complex relative to the free ligand.
    Keywords: Hydroxamic acid;spectroscopic investigations;microbial activity;cobalt (II);octhedral geometry