Selenophene
- Formula: C4H4Se
- Molecular weight: 131.03
- IUPAC Standard InChIKey: MABNMNVCOAICNO-UHFFFAOYSA-N
- CAS Registry Number: 288-05-1
- Chemical structure:
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Phase change data
Go To: Top, 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:
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔvapH° | 9.1 ± 0.2 | kcal/mol | C | Voronkov, Klyuchnikov, et al., 1989 | AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.75 | 272. | Dykyj, Svoboda, et al., 1999 | Based on data from 234. to 300. K.; AC |
8.13 | 249. | Stull, 1947 | Based on data from 234. to 387. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
234. to 387.5 | 3.75405 | 1331.417 | -33.354 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
11.3 | 225. | Milazzo and Paoloni, 1951 | Based on data from 208. to 243. K.; AC |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.0727 | 122.7 | crystaline, III | crystaline, II | Dworkin and Szwarc, 1991 | DH |
0.2643 | 192.8 | crystaline, II | crystaline, I | Dworkin and Szwarc, 1991 | DH |
1.096 | 240.2 | crystaline, I | liquid | Dworkin and Szwarc, 1991 | DH |
0.168 | 125.54 | crystaline, I3 | crystaline, I2 | Dworkin and Szwarc, 1991 | Metastable phase.; DH |
0.2397 | 155.4 | crystaline, I2 | crystaline, I1 | Dworkin and Szwarc, 1991 | Metastable phase.; DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.593 | 122.7 | crystaline, III | crystaline, II | Dworkin and Szwarc, 1991 | DH |
1.37 | 192.8 | crystaline, II | crystaline, I | Dworkin and Szwarc, 1991 | DH |
4.57 | 240.2 | crystaline, I | liquid | Dworkin and Szwarc, 1991 | DH |
1.34 | 125.54 | crystaline, I3 | crystaline, I2 | Dworkin and Szwarc, 1991 | Metastable; DH |
1.54 | 155.4 | crystaline, I2 | crystaline, I1 | Dworkin and Szwarc, 1991 | Metastable; DH |
Mass spectrum (electron ionization)
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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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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 | F.Fringuelli ET AL.J.Heterocycl.Chem.,15,137(1978) |
NIST MS number | 281119 |
References
Go To: Top, Phase change data, 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.
Voronkov, Klyuchnikov, et al., 1989
Voronkov, M.G.; Klyuchnikov, V.A.; Kolabin, S.N.; Shvets, G.N.; Varushin, P.I.; Deryagina, E.N.; Korchevin, N.A.; Tsvetnitskaya, S.I.,
Thermochemical properties of dialkyl chalcogenides and dichalcogenides RMnR (M = sulfur, selenium, tellurium; n = 1, 2),
Dokl. Akad. Nauk SSSR, Phys. Chem., 1989, 307, 5, 1139. [all data]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Milazzo and Paoloni, 1951
Milazzo, G.; Paoloni, L.,
Ann. Chim. (Rome), 1951, 41, 673. [all data]
Dworkin and Szwarc, 1991
Dworkin, A.; Szwarc, H.,
Thermodynamic evidence for stable and metastable phases in crystalline selenophene, C. R. l'Academie Sci.,
Ser. II Univers, 1991, 312(7), 701-704. [all data]
Notes
Go To: Top, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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