4-n-Pentanoyl-4-n'-pentanoyloxyazobenzene
- Formula: C22H26N2O3
- Molecular weight: 366.4534
- IUPAC Standard InChI: InChI=1S/C22H26N2O3/c1-3-5-7-21(25)17-9-11-18(12-10-17)23-24-19-13-15-20(16-14-19)27-22(26)8-6-4-2/h9-16H,3-8H2,1-2H3/b24-23+
- IUPAC Standard InChIKey: IFNWLIHOKYCDEY-WCWDXBQESA-N
- CAS Registry Number: 120102-98-9
- 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 fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 7.100 | 355.1 | Fanelli, Poeti, et al., 1988 | Solid-smectic 2. |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 20.00 | 355.1 | Fanelli, Poeti, et al., 1988 | Solid-smectic |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 4.690 | 377.1 | liquid | liquid | Fanelli, Poeti, et al., 1988 | |
| 7.682 | 377.5 | liquid | liquid | Fanelli, Poeti, et al., 1988 | |
| 6.088 | 399.5 | liquid | liquid | Fanelli, Poeti, et al., 1988 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 12.44 | 377.1 | liquid, Smectic 2 | liquid, smectic 1 | Fanelli, Poeti, et al., 1988 | |
| 20.34 | 377.5 | liquid, Smectic 1 | liquid, smectic A | Fanelli, Poeti, et al., 1988 | |
| 15.24 | 399.5 | 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
Go To: Top, Phase change data, References
- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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