N-(2-Hydroxy-4-methoxybenzylidene)-p-butylaniline
- Formula: C18H21NO2
- Molecular weight: 283.3648
- IUPAC Standard InChIKey: DFUYRNLWIOXVQP-CPNJWEJPSA-N
- CAS Registry Number: 30633-94-4
- Chemical structure:
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 100.57 | cal/mol*K | N/A | Sorai and Seki, 1973 |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
107.82 | 300. | Sorai and Seki, 1973 | T = 12 to 375 K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 317. | K | N/A | Sorai and Seki, 1971 | DH |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 314.52 | K | N/A | Sorai and Seki, 1973, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
5.8329 | 314.52 | Sorai and Seki, 1973 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
17.03 | 314.52 | Sorai and Seki, 1973 | DH |
Temperature of phase transition
Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|
337.5 | liquid | liquid | Sorai and Seki, 1971 | Nematic mesophase to isotropic.; DH |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.2121 | 335.65 | liquid | liquid | Sorai and Seki, 1973 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.631 | 335.65 | liquid, Nematic | liquid, isotropic | Sorai and Seki, 1973 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Sorai and Seki, 1973
Sorai, M.; Seki, S.,
Heat capacity of N-(o-hydroxy-p-methoxybenzylidene)-p-butylaniline: a glassy nematic liquid crystal,
Mol. Cryst. Liq. Cryst., 1973, 23, 299-327. [all data]
Sorai and Seki, 1971
Sorai, M.; Seki, S.,
Glassy liquid crystal of the nematic phase of N-(o-Hydroxy-p-methoxybenzylidene)-p-butylaniline,
Bull. Chem. Soc. Japan, 1971, 44, 2887. [all data]
Sorai and Seki, 1973, 2
Sorai, M.; Seki, S.,
Heat capacity of N-(o-hydroxy-p-methoxybenzylidene)-p-butylaniline: A glassy nematic liquid crystal,
Mol. Cryst. Liq. cryst., 1973, 23, 299. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tfus Fusion (melting) point Ttriple Triple point temperature Ttrs Temperature of phase transition 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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