Solutions of NiCl2 in molten acetamide and caprolactam have been investigated. The nature of the Ni(II) species present was found to be independent of concentration, over the concentration ranges 0.02 to 0.25 and 0.01 to 0.3 M, respectively; however, it was not independent of temperature. In both solvents, Ni(II) occurred mainly in octahedral environments but an increase in temperature apparently resulted in the formation of tetrahedral species.