2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl-
- Formula: C8H8O2
- Molecular weight: 136.1479
- IUPAC Standard InChIKey: MYKLQMNSFPAPLZ-UHFFFAOYSA-N
- CAS Registry Number: 137-18-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: p-Benzoquinone, 2,5-dimethyl-; p-Xyloquinone; Phlorone; 2,5-Dimethyl-p-benzoquinone; 2,5-Dimethyl-1,4-benzoquinone; 2,5-Dimethylquinone; 2,5-Xyloquinone; 3,6-Dimethyl-p-benzoquinone; Benzoquinone, 2, 5-dimethyl-; 2,5-Dimethyl-1,4-benzochinon; 2,5-Dimetilbenzochinone (1:4); Floron; Florone; 2,5-Dimethyl-2,5-Cyclohexadiene-1,4-dione; 2,5-Dimethyl-p-quinone; NSC 15309
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Phase change data
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔsubH° | 18.400 | kcal/mol | V | Coolidge and Coolidge, 1927 | ALS |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
18.4 | 283. | QF | Coolidge and Coolidge, 1927 | Based on data from 273. to 293. K. See also Jones, 1960 and Stephenson and Malanowski, 1987.; AC |
IR Spectrum
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
- SOLID (MINERAL OIL MULL); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
- SOLID (OIL MULL) $$SPECTRAL CONTAMINATION DUE TO OIL AROUND 2900 CM-1; PERKIN-ELMER 21 (GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY; 2 cm-1 resolution
- SOLUTION (5% CCl4 FOR 3800-1330, 5% CS2 FOR 1330-400); BECKMAN IR-9 (GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY (ADJUSTED subtractcm-1only3600); 2 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Phase change data, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-3616 |
NIST MS number | 231805 |
References
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Coolidge and Coolidge, 1927
Coolidge, A.S.; Coolidge, M.S.,
The sublimation pressures of substituted quinones and hydroquinones,
J. Am. Chem. Soc., 1927, 49, 100-104. [all data]
Jones, 1960
Jones, A.H.,
Sublimation Pressure Data for Organic Compounds.,
J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019
. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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