Аннотация:The literature data on equilibrium with the participation of cobalt fluorides and their negative ions are analyzed. Enthalpies of formation −∆fH°(0 K) are determined (kJ/mol): CoF3, 568.9 ± 8; CoF−3, 972.4 ± 10; CoF4, 639.4 ± 12; CoF−4, 1228.0 ± 17.