tetrahexylammonium perchlorate
- Formula: C24H52ClNO4
- Molecular weight: 454.127
- IUPAC Standard InChI: InChI=1S/C24H52N.ClHO4/c1-5-9-13-17-21-25(22-18-14-10-6-2,23-19-15-11-7-3)24-20-16-12-8-4;2-1(3,4)5/h5-24H2,1-4H3;(H,2,3,4,5)/q+1;/p-1
- IUPAC Standard InChIKey: RLCKPGXHGKSGOS-UHFFFAOYSA-M
- CAS Registry Number: 4656-81-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Tetra-n-hexylammonium perchlorate
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
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
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 178. | 298.15 | Andrews and Gordon, 1973 | crystaline, IV phase; T = 300 to 382 K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 383. | K | N/A | Coker, Ambrose, et al., 1970 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.5 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 379.22 | K | N/A | Andrews and Gordon, 1973, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 5.4947 | 333.57 | crystaline, IV | crystaline, III | Andrews and Gordon, 1973 | DH |
| 1.396 | 355.91 | crystaline, III | crystaline, II | Andrews and Gordon, 1973 | DH |
| 0.6353 | 367.51 | crystaline, II | crystaline, I | Andrews and Gordon, 1973 | DH |
| 3.9077 | 379.18 | crystaline, I | liquid | Andrews and Gordon, 1973 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 16.5 | 333.57 | crystaline, IV | crystaline, III | Andrews and Gordon, 1973 | DH |
| 3.92 | 355.91 | crystaline, III | crystaline, II | Andrews and Gordon, 1973 | DH |
| 1.7 | 367.51 | crystaline, II | crystaline, I | Andrews and Gordon, 1973 | DH |
| 10.3 | 379.18 | crystaline, I | liquid | Andrews and Gordon, 1973 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Andrews and Gordon, 1973
Andrews, J.T.S.; Gordon, J.E.,
Adiabatic calorimetry of organic salts. Tetra-n-hexylammonium perchlorate,
J. Chem. Soc. Faraday Trans., 1973, I 69, 546-554. [all data]
Coker, Ambrose, et al., 1970
Coker, T.G.; Ambrose, J.; Janz, G.J.,
Fusion properties of some ionic quaternary ammonium compounds.,
J. Am. Chem. Soc., 1970, 92, 5293. [all data]
Andrews and Gordon, 1973, 2
Andrews, J.T.S.; Gordon, J.E.,
Adiabatic calorimetry of organic salts tetra-n-hexylammonium perchlorate,
J. Chem. Soc. Faraday Trans. 1, 1973, 69, 546. [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 Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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