4-Methoxy-4'-hexoxy-trans-stilbene
- Formula: C21H26O2
- Molecular weight: 310.4299
- IUPAC Standard InChI: InChI=1S/C21H26O2/c1-3-4-5-6-17-23-21-15-11-19(12-16-21)8-7-18-9-13-20(22-2)14-10-18/h7-16H,3-6,17H2,1-2H3/b8-7+
- IUPAC Standard InChIKey: MWDBDMGQXOYWJG-BQYQJAHWSA-N
- CAS Registry Number: 35135-44-5
- 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 430. | K | N/A | Young, Haller, et al., 1972 | Uncertainty assigned by TRC = 1. K; TRC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 9.8901 | 430. | Young, Haller, et al., 1972, 2 | Crystal-isotropic liquid transition.; DH |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 23.0 | 430. | Young, Haller, et al., 1972, 2 | Crystal-isotropic; DH |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.189 | 426. | liquid | liquid | Young, Haller, et al., 1972, 2 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.45 | 426. | liquid, Nematic | liquid, isotropic | Young, Haller, et al., 1972, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Young, Haller, et al., 1972
Young, W.R.; Haller, I.; Aviram, A.,
Mesomorphism in the 4,4'-dialkoxy-trans-stilbene,
Mol. Cryst. Liq. Cryst., 1972, 15, 311. [all data]
Young, Haller, et al., 1972, 2
Young, W.R.; Haller, I.; Aviram, A.,
Mesomorphism in the 4,4'-dialkoxy-trans-stilbenes,
Mol. Cryst. Liq. Cryst., 1972, 15, 311-317. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point 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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