Cycloheptane-thiourea adduct
- Formula: C10H26N6S3
- Molecular weight: 326.549
- CAS Registry Number: 39822-97-4
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Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.368 | 162.4 | crystaline, V | crystaline, IV | Cope, Gannon, et al., 1972 | |
| 0.568 | 241. | crystaline, IV | crystaline, III | Cope, Gannon, et al., 1972 | |
| 0.093 | 262. | crystaline, III | crystaline, II | Cope, Gannon, et al., 1972 | Shallow hump at 270 to 290 K, H = 4802 J/mol (thiourea), S = 34.50 J/mol*K. |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.24 | 162.4 | crystaline, V | crystaline, IV | Cope, Gannon, et al., 1972 | |
| 2.36 | 241. | crystaline, IV | crystaline, III | Cope, Gannon, et al., 1972 | |
| 0.36 | 262. | crystaline, III | crystaline, II | Cope, Gannon, et al., 1972 | Shallow |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cope, Gannon, et al., 1972
Cope, A.F.G.; Gannon, D.J.; Parsonage, N.G.,
Thermodynamic properties of thiourea + hydrocarbon adducts from 12 to 300K. The heat capacities and entropies of the adducts of c-C6H12, c-C7H14, c-C8H16, and (CH3)3C.C2H5,
J. Chem. Thermodynam., 1972, 4, 829-842. [all data]
Notes
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- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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