4-n-Pentanoyl-4-n'-hexadecanoyloxyazobenzene
- Formula: C33H48N2O3
- Molecular weight: 520.7458
- IUPAC Standard InChI: InChI=1S/C33H48N2O3/c1-3-5-7-8-9-10-11-12-13-14-15-16-17-19-33(37)38-31-26-24-30(25-27-31)35-34-29-22-20-28(21-23-29)32(36)18-6-4-2/h20-27H,3-19H2,1-2H3/b35-34+
- IUPAC Standard InChIKey: CNCOEFKXXCAARK-XAHDOWKMSA-N
- CAS Registry Number: 120103-09-5
- 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 |
|---|---|---|---|---|---|
| 4.686 | 333.9 | crystaline, III | crystaline, II | Fanelli, Poeti, et al., 1988 | |
| 7.146 | 361.8 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 45.627 | 377.4 | crystaline, I | liquid | Fanelli, Poeti, et al., 1988 | |
| 10.067 | 399.6 | liquid | liquid | Fanelli, Poeti, et al., 1988 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 14.03 | 333.9 | crystaline, III | crystaline, II | Fanelli, Poeti, et al., 1988 | |
| 19.75 | 361.8 | crystaline, II | crystaline, I | Fanelli, Poeti, et al., 1988 | |
| 120.90 | 377.4 | crystaline, I, Solid | liquid, smectic A | Fanelli, Poeti, et al., 1988 | |
| 25.19 | 399.6 | 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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