260394-86-3Relevant academic research and scientific papers
Synthesis and characterisation of cobalt complexes of salicylaldehyde 4- methoxybenzoyl hydrazone (H2 smbhon)
Dey, Kamalendu,Chakraborty, Kartick,Bhattacharya, Prabir Kumar,Bandyopadhyay, Debasish,Nag, Sanat Kumar,Bhowmick, Ranabir
, p. 1139 - 1144 (2007/10/03)
A number of mononuclear and dinuclear cobalt(II) and cobalt(III) complexes have been isolated by reacting salicylaldehyde 4 methoxybenzoyl hydrazone (H2smbhon) with CoCl2·6H2O, Co(NO3)26H2O, Co(CH3COO)2·4H2O and Co(acac)3 under varied reaction conditions. [Co(II)(smbhon)(H2O)3], isolated in this study, further reacts with pyridine (Py) dipyridine (dip) and triphenylphosphine (Ph3P) in presence of NaCIO4 to form new cobalt (III) complexes. Equimolar mixtures of [Co(II) (smbhon)(H2O)3] and the ligands like acetylacetone (Hacac), glycine (Hgly), N,N-bisethyleneacteophenoneimine (bape),N-phenylsalicylaldimine (Haslan), N- phenylorthohydroxyacetophenoneimine (Hohapan), N-hydroxymethylsalicylaldimine (H2salgly), N-2-hydroxyphenylsalicylaldimine (H2saloap) or N-2- carboxyphenylsalicylaldimine (H2salana) on refluxing in methanol- acetonitrile in the presence of oxygen at pH ~9 afford coloured heterochelates of cobalt (III) in high yields. Structures of the complexes have been assigned on the basis of elemental analyses, molecular weights, molar conductances, magnetic moments and spectral (UV-vis and IR) studies. The physico-chemical data suggest that H2smbhon can behave as a dibasic tridentate (ONO) donor, monobasic tridentate (ONO) (keto form) donor and monobasic bidentate (NO) donor depending on the reaction conditions.
