Alcoholato Complexes, Cobalt(II) Chlorides Alcoholato complexes of cobalt(II) chloride with the general formula, C0CI2 • x R O H (where R = Me, Et, Pr», Bu», Bu«, Bu* and Bu') have been synthesised by the reactions of anhydrous C0CI2 with an excess of the appropriate alcohols under reflux. Physicochemical studies such as electronic, infra-red spectra, magnetic and conductivity measurements have...

Metal complexes of 2,5-dicarboxamidopyrroles and 2,5-dicarbothioamidopyrroles have been structurally characterised for the first time, complementing the significant amount of work that has been reported for the analogous pyridine ligands. N,N'-Bis(3,5-dinitrophenyl)-3,4-diphenyl-1H-pyrrole-2,5-dicarboxamide forms octahedral bis(tridentate) complexes with cobalt(III) and nickel(II), where the li...

A novel Pyridine-2,6-dicarboxylic acid mixed ligands complex of formula [Co(NO3)2].6H2O has been obtained by the reaction of Pyridine-2,6-dicarboxylic acid with cobalt nitrate and 1,10-phenanthroline on heating in water. The structures of [Co(pydc)(Phen)(H2O)](pydcH2).4H2O receptors, and their complexes were optimized using DFT method at the B3LYP/3-21G** level. The highest occupied molecular o...

In this paper, single crystalline octahedral Co3O4 with dimensions about 100–500 nm and smooth surface has been prepared by solid-state thermal decomposition of cobalt(II) Schiff base complex Co((3,4-MeO-ba)2 en)Cl2 as new precursor at 450ºC under air atmosphere for 3.5 h. Surface morphology of the products were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray powder ...

The complex formation between cobalt(II) and chloride ions in molten NH4NO3·2.61H2O, NH4NO3·CH3CONH2·1.61H2O and NH4NO3·2.61CH3CONH2 has been investigated. Absorption spectra of cobalt(II) chloride containing variable amounts of ammonium chloride were recorded at 45 to 60 ◦C. In the absence of chloride, the solutions show spectra typical for octahedral co-ordination of cobalt(II). Addition of c...

Two new cobaltous-porphyrin complexes, namely (?-piperazine)-bis[(meso-tetra(para-methoxyphenyl)porphyrinato)]cobalt(II) and (piperazine)[meso-tetra(para-chlorophenyl)porphyrin]cobalt(II) dichloromethane disolvate, with the formulas [{CoII(TMPP)}2(?2-pipz)] (complex 1) [CoII(TClPP)(pipz)]·2CH2Cl2 2), were used efficiently as catalysts in degradation of 4-nitrophenol (4-NP) an aqueous hydrogen p...