Tetrachlorobis-(methylammonium) manganese II
- Formula: C2H12Cl4MnN2
- Molecular weight: 260.880
- CAS Registry Number: 12121-86-7
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Condensed phase thermochemistry 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 402.9 | J/mol*K | N/A | White, Granville, et al., 1982 |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 263.6 | 298.15 | White, Granville, et al., 1982 | T = 10 to 300 K. |
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 |
|---|---|---|---|---|---|
| 0.728 | 94.37 | crystaline, III | crystaline, II | White, Granville, et al., 1982 | |
| 0.117 | 257.02 | crystaline, II | crystaline, I | White, Granville, et al., 1982 | |
| 0.0048 | 257. | crystaline, III | crystaline, II | Bocanegra, Arriandiaga, et al., 1975 | |
| 0.0036 | 393. | crystaline, II | crystaline, I | Bocanegra, Arriandiaga, et al., 1975 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 7.74 | 94.37 | crystaline, III | crystaline, II | White, Granville, et al., 1982 | |
| 0.452 | 257.02 | crystaline, II | crystaline, I | White, Granville, et al., 1982 | |
| 0.017 | 257. | crystaline, III | crystaline, II | Bocanegra, Arriandiaga, et al., 1975 | |
| 0.007 | 393. | crystaline, II | crystaline, I | Bocanegra, Arriandiaga, et al., 1975 |
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.
White, Granville, et al., 1982
White, M.A.; Granville, N.W.; Staveley, L.A.K.,
The heat capacity of the layer compound tetrachlorobis(methylammonium)manganese-II (CH3NH3)2MnCl4 from 10 to 300K,
J. Phys. Chem. Solids, 1982, 43, 341-349. [all data]
Bocanegra, Arriandiaga, et al., 1975
Bocanegra, E.H.; Arriandiaga, M.A.; Tello, M.J.; Arend, H.,
Specific heat anomalies in the structural phase transitions in (CnH2n+1NH3)2MnCl4 compounds,
Quatrieme Conference Internationale de Thermodynamique Chimique, 1975, II, Thermophysique (capacites thermiques) pp 12-18. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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