4-n-Pentanoyl-4-n'-octadecanoyloxyazobenzene
- Formula: C35H52N2O3
- Molecular weight: 548.7990
- IUPAC Standard InChI: InChI=1S/C35H52N2O3/c1-3-5-7-8-9-10-11-12-13-14-15-16-17-18-19-21-35(39)40-33-28-26-32(27-29-33)37-36-31-24-22-30(23-25-31)34(38)20-6-4-2/h22-29H,3-21H2,1-2H3/b37-36+
- IUPAC Standard InChIKey: ALGDBBBTWIBSRX-BSRQYYOTSA-N
- CAS Registry Number: 120103-11-9
- Chemical structure:
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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 |
|---|---|---|---|---|---|
| 5.305 | 339.6 | crystaline, III | crystaline, II | Fanelli, Poeti, et al., 1988 | |
| 8.268 | 367.5 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 51.827 | 379.3 | crystaline, I | liquid | Fanelli, Poeti, et al., 1988 | |
| 10.447 | 397.3 | liquid | liquid | Fanelli, Poeti, et al., 1988 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 15.62 | 339.6 | crystaline, III | crystaline, II | Fanelli, Poeti, et al., 1988 | |
| 22.50 | 367.5 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 136.64 | 379.3 | crystaline, I, Solid | liquid, smectic A | Fanelli, Poeti, et al., 1988 | |
| 26.30 | 397.3 | liquid, Smectic A | liquid, isotropic | Fanelli, Poeti, et al., 1988 |
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.
Fanelli, Poeti, et al., 1988
Fanelli, E.; Poeti, G.; Francescangeli, O.; Torguati, G.,
Mesomorphic behaviour of some 4-n-pentanoyl-4'-n-alkanoyloxy azobenzenes (PPAPE). A new series of liquid-crystal compounds,
Il Nuovo Cimento, 1988, 10(11), 1373-1384. [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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