1H-Indazole
- Formula: C7H6N2
- Molecular weight: 118.1359
- IUPAC Standard InChIKey: BAXOFTOLAUCFNW-UHFFFAOYSA-N
- CAS Registry Number: 271-44-3
- 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: Isoindazole; 1,2-Diazaindene; 1H-Benzopyrazole; 2-Azaindole; Indazole; Benzopyrazole
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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 419.3 | K | N/A | Rondestvedt and Blanchard, 1955 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 91.1 ± 0.2 | kJ/mol | V | Jimenez, Roux, et al., 1987 | see Jimenez, Roux, et al., 1986; ALS |
ΔsubH° | 91.1 | kJ/mol | N/A | Jimenez, Roux, et al., 1987 | DRB |
ΔsubH° | 91.1 ± 0.2 | kJ/mol | N/A | Jimenez, Roux, et al., 1987 | See also Jimenez, Roux, et al., 1986, 2.; AC |
ΔsubH° | 87.7 | kJ/mol | N/A | Faour and Akasheh, 1985 | DRB |
ΔsubH° | 97.1 | kJ/mol | V | Zimmerman and Geisenfelder, 1961 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
543.2 | 0.991 | Aldrich Chemical Company Inc., 1990 | BS |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
90.9 ± 0.2 | 318. | ME | Jimenez, Roux, et al., 1987 | Based on data from 308. to 317. K.; AC |
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.
Rondestvedt and Blanchard, 1955
Rondestvedt, C.S.; Blanchard, H.S.,
Arylation of Unsaturated Systems by Free Radicals I. Arylation of Alkylbenzenes,
J. Am. Chem. Soc., 1955, 77, 1769. [all data]
Jimenez, Roux, et al., 1987
Jimenez, P.; Roux, M.V.; Turrion, C.,
Thermochemical properties of N-heterocyclic compounds. I. Enthalpies of combustion, vapour pressures and enthalpies of sublimation, and enthalpies of formation of pyrazole, imidazole, indazole, and benzimidazole,
J. Chem. Thermodyn., 1987, 19, 985-992. [all data]
Jimenez, Roux, et al., 1986
Jimenez, P.; Roux, M.V.; Turrion, C.; Gomis, F.,
Thermochemical properties of some N-heterocyclic compounds,
J. Calorim. Anal. Therm. Thermodyn. Chim., 1986, 17, 469-470. [all data]
Jimenez, Roux, et al., 1986, 2
Jimenez, P.; Roux, M.V.; Turrion, C.; Gomis, F.,
Thermochemical properties of some N-heterocyclic compounds,
J. Calorim. Anal. Therm. Thermodyn. Chim., 1986, 17, 469. [all data]
Faour and Akasheh, 1985
Faour, M.; Akasheh, T.S.,
Heat of combustion of some N-heterocycle compounds. Part 1,
J. Chem. Soc. Perkin Trans. 2, 1985, 811-713. [all data]
Zimmerman and Geisenfelder, 1961
Zimmerman, H.; Geisenfelder, H.,
Uber die Mesomerieenergie von Azolen,
Z. Electrochem., 1961, 65, 368-371. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point 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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