Four new gaseous salts are found, in which CoO acts as cation-forming oxide (CoWO₄, CoMoO₄, CoPO₃, CoPO₂), and three salts, in which cobalt oxide acts as anion-forming oxide (CaCoO₂, SrCoO₂, BaCoO₂). Standard enthalpies of formation and atomization for new compounds are determined. Investigation was conducted using high-temperature mass spectrometry technique.