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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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 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 | 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, 2 | DH |
| 1.396 | 355.91 | crystaline, III | crystaline, II | Andrews and Gordon, 1973, 2 | DH |
| 0.6353 | 367.51 | crystaline, II | crystaline, I | Andrews and Gordon, 1973, 2 | DH |
| 3.9077 | 379.18 | crystaline, I | liquid | Andrews and Gordon, 1973, 2 | 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, 2 | DH |
| 3.92 | 355.91 | crystaline, III | crystaline, II | Andrews and Gordon, 1973, 2 | DH |
| 1.7 | 367.51 | crystaline, II | crystaline, I | Andrews and Gordon, 1973, 2 | DH |
| 10.3 | 379.18 | crystaline, I | liquid | Andrews and Gordon, 1973, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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
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]
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., 1973, I 69, 546-554. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
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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