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The thermodynamic properties of sulfur dioxide, carbon disulfide, and carbonyl sulfide are calculated from the molecular constants obtained by electron diffraction and Raman and infrared spectra. — (F0 — E00) / T298.1 = 50.95, 48.28, 47.39; S0298.1 = 59.40, 56.84, 55.34 for SO2, CS2(g), and COS, respectively. The results are applied to several reactions involving these compounds. The free energies of formation of CS2(l) and COS at 298.1°K are +15.24 and —40.48 kg.cal.
Paul C. Cross (Sun,) studied this question.