Journal of the Chemical Society Dalton Transactions · 1972 · 18 citations · 0 references
Natural SciencesChemistryInorganic ChemistryPhysical ChemistryThermodynamicsChemical ThermodynamicsCoordination ChemistryHydrate FormationMagnetism Of Inorganic CompoundsMolecular ThermodynamicsSolution ChemistryDissociation BehaviorHydrate DissociationHydrate Structure TypeHydrate ThermodynamicsPressure Effects On Hydrate FormationTemperature Effects On Hydrate FormationThermodynamic AnalysisThermodynamic Forces
The dehydration of cobalt(II) chloride-6-hydrate (CoCl2,6H2O) was investigated. The results can be summarized as CoCl2,nH2O(c)= CoCl2,mH2O(c)+(n–m)H2O(v), where n is 6, 4, 2, 1; m is 4, 2, 1, and 0. The enthalpy and entropy of reaction were calculated from the behaviour of the dissociation pressure as a function of temperature. The enthalpy and entropy of formation were calculated from the thermodynamic values. Magnetic moments and spectra were determined. The probable structure of the hydrates are discussed on the basis of the chemical and physical evidence and the known structures.