Synthesis, Physico-Chemical and Biological Properties of Complexes of Cobalt(II) Derived from Hydrazones of Isonicotinic Acid Hydrazide 


Vol. 53,  No. 1, pp. 17-26, Feb.  2009
10.5012/jkcs.2009.53.1.017


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  Abstract

Isonicotinic acid hydrazid의 Hydrazones, 즉, N-isonicotinamido-furfuralaldimine (INH-FFL), N-isonicotnamido- cinnamalidine (INH-CIN) 및 N-isonicotnamido-3',4',5'-trimethoxybenzaldimine (INH-TMB)를 isonicotinic acid hydrazide와 예를 들면 furfural, cinnamaldehyde 또는 3,4,5-trimethoxy-benzaldehyde 등과 같 은 각각의 방향족 알데히드와의 반응으로부터 제조하였다. INH-FFL, INH-CIN and INH-TMB와 같은 새로운 hydrazones을 코발트(II) 염과 반응시켜 새로운 일련의 15개 코발트(II) 착물을 제조하였다. 적외선 분광 데이타를 통해 hydrazone 리간드들이 Co2+ 이온에 대해 N, O 주개원자의 배열을 갖는 두자리 리간드임을 규명하였다. 착물 의 특성은 원소분석, 수자율, 전도도, 적외선 및 전자 스펙트럼 측정을 통해 조사하였다. 분석 데이터로부터 착물은 [Co(L22] 및 [Co(L3](Cl42 (L = INH-FFL, INH-CIN 또는 INH-TMB, 그리고X = Cl?, N3?, NCS? 또는 C3COO?)의 일반적 조성을 가짐을 알 수 있었다. 열무게법으로부터 착물의 열적 행동을 조사하였다. 전자 스펙 트럼 결과와 자화율 측정으로부터 코발트(II) 킬레이트가 6배위의 기하구조를 이루고 있다는 것을 확인할 수 있었 다. 코발트(II) 착물과 약간의 표준약물에 대한 향균성으로부터 이들 착물이 매우 적합한 향균성질을 가짐을 알 수 있다. Hydrazones of isonicotinic acid hydrazide, viz., N-isonicotinamido-furfuralaldimine (INH-FFL), N-isonicotnamido-cinnamalidine (INH-CIN) and N-isonicotnamido-3',4',5'-trimethoxybenzaldimine (INH-TMB) were prepared by reacting isonicotinic acid hydrazide with respective aromatic aldehydes, i.e., furfural, cinnamaldehyde or 3,4,5-trimethoxy-benzaldehyde. A new series of fifteen complexes of cobalt(II) with these new hydrazones, INH-FFL, INH-CIN and INH-TMB, were synthesized by their reaction with cobalt(II) salts. The infrared spectral data reveal that hydrazone ligands behave as a bidentate ligand with N, O donor sequence towards the Co2+ ion. The complexes were characterized on the basis of elemental analysis, magnetic susceptibility, conductivity, infrared and electronic spectral measurements. Analytical data reveal that the complexes have general composition [Co(L22] and [Co(L3](Cl42 where L= INH-FFL, INH-CIN or INH-TMB and X = Cl?,N3?, NCS? or C3COO?. The thermal behaviour of the complexes were studied using thermogravimetrictechnique. Electronic spectral results and magnetic susceptibility measurements are consistent with the adoption of a six-coordinate geometry for the cobalt(II) chelates. The antimicrobial properties of cobalt(II) complexes and few standard drugs have revealed that the complexes have very moderate antibacterial activities.

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  Cite this article

[IEEE Style]

S. Prasad and R. K. Agarwal, "Synthesis, Physico-Chemical and Biological Properties of Complexes of Cobalt(II) Derived from Hydrazones of Isonicotinic Acid Hydrazide," Journal of the Korean Chemical Society, vol. 53, no. 1, pp. 17-26, 2009. DOI: 10.5012/jkcs.2009.53.1.017.

[ACM Style]

Surendra Prasad and Ram K Agarwal. 2009. Synthesis, Physico-Chemical and Biological Properties of Complexes of Cobalt(II) Derived from Hydrazones of Isonicotinic Acid Hydrazide. Journal of the Korean Chemical Society, 53, 1, (2009), 17-26. DOI: 10.5012/jkcs.2009.53.1.017.