Spectrophotometric and conductometric study of cobalt(II) bromide–dimethyl sulphoxide solutions
Abstract
Visible absorption spectra and the molar conductivities of CoBr2 dissolved in dimethyl sulphoxide (dmso) have been determined. Absorption spectra of the Co(ClO4)2–LiBr–dmso and CoBr2–chlorobenzene–dmso ternary systems have also been investigated at 25 °C. The results indicate the existence of the [Co(dmso)6]2+, [CoBr(dmso)6]+, and [CoBr3(dmso)]– complexes in dmso solutions of CoBr2 while the [CoBr4]2– ion exists in the ternary system at high Br– to Co2+ ratios only.