Chloropentamethylbenzene
- Formula: C11H15Cl
- Molecular weight: 182.690
- IUPAC Standard InChIKey: GWKDRPNLSOEGRT-UHFFFAOYSA-N
- CAS Registry Number: 5153-39-9
- Chemical structure:
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Condensed phase thermochemistry 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 311.48 | J/mol*K | N/A | Gyoten, Yoshimoto, et al., 1982 | T = 300 K, S for phases II, III, and IV. |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
244.60 | 300. | Gyoten, Yoshimoto, et al., 1982 | T = 3 to 300 K. Cp for phases II, III, and IV. |
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 | 427. | K | N/A | White, Biggs, et al., 1940 | Uncertainty assigned by TRC = 2. K; TRC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.930 | 84.0 | crystaline, IV | crystaline, III | Gyoten, Yoshimoto, et al., 1982 | DH |
1.330 | 153.5 | crystaline, III | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | DH |
1.330 | 180.4 | crystaline, II' | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | DH |
1.500 | 187.2 | crystaline, III' | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | Phase changes c,II'/c,II and c,III'/c,II are monotropic transitions.; DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
11.1 | 84.0 | crystaline, IV | crystaline, III | Gyoten, Yoshimoto, et al., 1982 | DH |
8.8 | 153.5 | crystaline, III | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | DH |
7.7 | 180.4 | crystaline, II' | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | DH |
8.5 | 187.2 | crystaline, III' | crystaline, II | Gyoten, Yoshimoto, et al., 1982 | Phase; DH |
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
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Additional Data
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Source | (editor), 1973 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 18972 |
Instrument | SF-16 |
Melting point | 154.0-155.5 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Gyoten, Yoshimoto, et al., 1982
Gyoten, H.; Yoshimoto, Y.; Atake, T.; Chihara, H.,
Thermodynamic studies of phase transitions in chloropentamethylbenzene,
J. Chem. Phys., 1982, 77, 5097-5107. [all data]
White, Biggs, et al., 1940
White, A.H.; Biggs, B.S.; Morgan, S.O.,
Dielectric Evidence for Molecular Rotation in the Crystals of Certain Benzene Derivatives,
J. Am. Chem. Soc., 1940, 62, 16-25. [all data]
(editor), 1973
(editor), Koptyug V.A.,
Atlas of Spectra of Aromatic and Heterocyclic Compounds, 1973, 3, 35. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, UV/Visible spectrum, 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 ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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