Synthesis, Magneto-Spectral, Electrochemical, Thermal Characterization and Antimicrobial Investigations of Some Nickel(II) Complexes of Hydrazones of Isoniazid

Isoniazid의 hydrazone을 갖는 몇 가지 니켈(II) 착물들의 합성, 자기적 및 전기적 성질, 열적 특성과 항균성에 대한 연구

  • Prasad, Surendra (Division of Chemical Sciences, Faculty of Science, Technology and Environment, The University of the South Pacific) ;
  • Agarwal, Ram K. (Department of Chemistry, Lajpat Rai Postgraduate College)
  • Published : 2009.12.20


The synthesis of a novel series of nickel(II) complexes with new ligands derived from hydrazones of isoniazid have been reported in present work. The complexes have general compositions [$Ni(L)_2X_2$] or $[Ni(L)_3](ClO_4)_2$ {L = N-isonicotinamido-furfuraldimine (INH-FFL), N-isonicotinamido-3',4',5'-trimethoxybenzaldimine (INH-TMB) or N-isonicotinamido-cinnamalidene (INH-CIN) and X = $Cl^-$, ${NO_3}^-$, $ NCS^-$ or $CH_3COO^-$}. The ligands hydrazones behave as neutral bidentates (N and O donor) through the carbonyl oxygen and azomethine nitrogen. The new complexes with octahedral geometry have been characterized by elemental analysis, molecular weight determinations, magnetic susceptibility/moment, thermogravimetric, electrochemical and spectroscopic studies viz. infrared and electronic spectra. On the basis of conductivity measurements in nitrobenzene ($PhNO_2$) solution the [$Ni(L)_2X_2$] and $[Ni(L)_3](ClO_4)_2$ complexes have been found to be non-electrolytes and 1:2 electrolytes, respectively. Thermal properties have also been investigated, which support the geometry of the complexes. Antibacterial and antifungal properties of nickel(II) complexes and few standard drugs have also been examined and it has been observed that the complexes have moderate antibacterial activities.


Nickel(II);Complexes;Hydrazones;Biological activity


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