4-n-Pentanoyl-4-n'-heptanoyloxyazobenzene
- Formula: C24H30N2O3
- Molecular weight: 394.5066
- IUPAC Standard InChI: InChI=1S/C24H30N2O3/c1-3-5-7-8-10-24(28)29-22-17-15-21(16-18-22)26-25-20-13-11-19(12-14-20)23(27)9-6-4-2/h11-18H,3-10H2,1-2H3/b26-25+
- IUPAC Standard InChIKey: SEMLNMILGNZRBH-OCEACIFDSA-N
- CAS Registry Number: 120103-00-6
- 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 (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.795 | 347.1 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 3.1721 | 371.4 | crystaline, I | liquid | Fanelli, Poeti, et al., 1988 | |
| 2.081 | 375.6 | liquid | liquid | Fanelli, Poeti, et al., 1988 | |
| 1.633 | 401.7 | liquid | liquid | Fanelli, Poeti, et al., 1988 | |
| 1.105 | 371.1 | liquid | liquid | Fanelli, Poeti, et al., 1988 |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 5.172 | 347.1 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 8.542 | 371.4 | crystaline, I, Solid | liquid, smectic 1 | Fanelli, Poeti, et al., 1988 | |
| 5.540 | 375.6 | liquid, Smectic 1 | liquid, smectic A | Fanelli, Poeti, et al., 1988 | |
| 4.065 | 401.7 | liquid, Smectic A | liquid, isotropic | Fanelli, Poeti, et al., 1988 | |
| 2.978 | 371.1 | liquid, Smectic 1 | liquid, smectic monotropic | 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
Go To: Top, Phase change data, References
- 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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