Unusual solvent-dependent syntheses of mononuclear and binuclear cobalt(II) complexes
Abstract
The ethylenediamine Schiff base derivatives of 1-phenylhexane-1,3,5-trione and 2,2-dimethyloctane-3,5,7-trione each provide two distinct binding sites for cobalt(II) ions, and in the presence of additional ligands (methanol, pyridine) mononuclear isomers with cobalt in the four-oxygen (O4) site are favoured while in the absence of these ligands, mononuclear isomers with cobalt in the N2O2site as well as a binuclear cobalt complex were isolated.