Thermodynamical Quantities of Chalcogenide Dimers (O₂, S₂, Se₂, and Te₂) from Spectroscopic Data

Table 1

Calculated thermodynamical properties of oxygen molecule (O₂) at 1 Atm.

T (K)	O2 molecule
	F (kJ/mole)	H (kJ/mole)	S (J/mole/K)	𝐶𝑝 (J/mole/K)
100	13.52	2.07	173.35	29.07
200	31.03	5.44	193.37	29.08
300	50.08	8.58	205.15	29.33
400	70.11	11.48	213.66	30.04
500	90.91	14.45	220.45	31.00
600	112.33	17.38	226.19	31.98
700	134.29	20.31	231.19	32.84
800	156.71	23.23	235.63	33.56
900	179.56	26.16	239.63	34.15
1000	202.78	29.08	243.26	34.63
1100	226.35	32.01	246.59	35.01
1200	250.25	34.95	249.66	35.33
1300	274.43	37.89	252.51	35.59
1400	298.89	40.83	255.17	35.81
1500	323.61	43.78	257.66	35.99
1600	348.56	46.73	260.00	36.14
1700	373.74	49.69	262.20	36.27
1800	399.14	52.65	264.29	36.38
1900	424.74	55.62	266.28	36.47
2000	450.53	58.59	268.16	36.55
2100	476.50	61.57	269.96	36.62
2200	502.65	64.55	271.68	36.69
2300	528.96	67.54	273.32	36.74
2400	555.44	70.53	274.90	36.79
2500	582.06	73.53	276.42	36.83
2600	608.84	76.53	277.88	36.87
2700	635.76	79.54	279.28	36.90
2800	662.81	82.55	280.64	36.93
2900	689.99	85.57	281.95	36.96
3000	717.31	88.59	283.21	36.99

Where F is free energy (kJ/mole), H is enthalpy (kJ/mole), S is entropy (J/mole/K), 𝐶_𝑝 is specific heat (J/mole/K), and T is temperature (K).