International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Full Length Research Paper

Complex of nickel (II) with isonicotinohydroxamic acid

Aliyu, A.O.1* and Nwabueze, J. N.2
1Department of Chemistry, Nigerian Defence Academy, PMB 2109, Kaduna, Nigeria. 2Department of Chemistry, University of Abuja, PMB 117, FCT, Abuja, Nigeria.
Email: [email protected]

  •  Accepted: 28 December 2007
  •  Published: 31 January 2008


Isonicotinohydroxamic acid (INHA) was synthesized, characterized, and its pKa determined spectrophotometrically as 8.680.05 at 25oC and in buffers of 0.1 mol dm-3 ionic strength (I). A spectroscopic investigation of its reaction with NiII in aqueous solution revealed the sole formation of the 1:2 complex at equilibrium. Spectra and magnetic studies of the isolated complex indicate octahedral coordination via the (N) atom of the hydroxamate group. Microbial sensitivity test on eight microorganisms used showed no activity.


Key words: Nickel (II), spectrophotometry, buffer, hydroxamate group, octahedral coordination microbial sensitivity.