Diazene, bis(4-butoxyphenyl)-, 1-oxide
- Formula: C20H26N2O3
- Molecular weight: 342.4320
- IUPAC Standard InChIKey: DWRXFZDFCLDVQG-UHFFFAOYSA-N
- CAS Registry Number: 17051-01-3
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Azoxy-bis-(p-n-butoxybenzene)
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Phase change data
Go To: Top, Gas phase ion energetics data, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Ttriple | 377.2 | K | N/A | Parkhomenko, Pivovarov, et al., 1990 | Nemactic liquid crystal phase; Uncertainty assigned by TRC = 0.8 K; meas. in Calvet microcalorimter, DAK-1; TRC |
Ttriple | 375.2 | K | N/A | Arnold, 1964 | Smectic liquid crystal phase; Uncertainty assigned by TRC = 0.1 K; TRC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
10.440 | 315.5 | crystaline, IV | crystaline, III | Bamezai, Godlewska, et al., 1990 | DH |
0.930 | 323.4 | crystaline, III | crystaline, II | Bamezai, Godlewska, et al., 1990 | DH |
1.570 | 360.5 | crystaline, II | crystaline, I | Bamezai, Godlewska, et al., 1990 | DH |
20.960 | 376.7 | crystaline, I | liquid | Bamezai, Godlewska, et al., 1990 | c,I to nematic liquid.; DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
33.09 | 315.5 | crystaline, IV | crystaline, III | Bamezai, Godlewska, et al., 1990 | DH |
2.88 | 323.4 | crystaline, III | crystaline, II | Bamezai, Godlewska, et al., 1990 | DH |
4.36 | 360.5 | crystaline, II | crystaline, I | Bamezai, Godlewska, et al., 1990 | DH |
55.64 | 376.7 | crystaline, I | liquid | Bamezai, Godlewska, et al., 1990 | c,I; DH |
Gas phase ion energetics data
Go To: Top, Phase change data, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.61 | PE | Millefiori, Ciliberto, et al., 1981 | Vertical value; LLK |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, Gas phase ion energetics 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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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-4455 |
NIST MS number | 232965 |
References
Go To: Top, Phase change data, Gas phase ion energetics 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.
Parkhomenko, Pivovarov, et al., 1990
Parkhomenko, V.D.; Pivovarov, A.A.; Sytnik, S.V.,
Thermophysical properties of oxamide,
Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1990, 33, 6, 53-5. [all data]
Arnold, 1964
Arnold, H.,
Calorimetry of crystalline-liquid materials: II results of the measurements on 12 homologous dialkoxy azeoxy benzenes,
Z. Phys. Chem. (Leipzig), 1964, 226, 146. [all data]
Bamezai, Godlewska, et al., 1990
Bamezai, R.K.; Godlewska, M.; Massalska-arodz, M.; Sciesinski, J.; Witko, W.,
The adiabatic calorimetry study of the polymorphism of solid 4,4'-di-n-butyloxyazoxybenzene,
Phase Transitions, 1990, 27(2-3), 113-119. [all data]
Millefiori, Ciliberto, et al., 1981
Millefiori, S.; Ciliberto, E.; Millefiori, A.; Zerbo, M.A.,
Gas phase U. V. photoelectron investigation of azoxybenzene and 4,4'-di(n-alkoxy)azoxybenzenes,
Spectromchim. Acta Part A, 1981, 37, 605. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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