1H-Pyrazole, 1,3-dimethyl-
- Formula: C5H8N2
- Molecular weight: 96.1304
- IUPAC Standard InChI: InChI=1S/C5H8N2/c1-5-3-4-7(2)6-5/h3-4H,1-2H3
- IUPAC Standard InChIKey: NODLZCJDRXTSJO-UHFFFAOYSA-N
- CAS Registry Number: 694-48-4
- 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: Pyrazole, 1,3-dimethyl-; 1,3-Dimethylpyrazole; 2,5-Dimethylpyrazole; 1,3-Dimethyl-1H-pyrazole
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Gas phase ion energetics data
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated by: Edward P. Hunter and Sharon G. Lias
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 223.2 | kcal/mol | N/A | Hunter and Lias, 1998 | |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 215.7 | kcal/mol | N/A | Hunter and Lias, 1998 |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, Gas Chromatography, 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 | V.A. KOPTYUG, VOL.4, ATLAS OF MASS SPECTRA OF ORGANIC COMPOUNDS |
| NIST MS number | 73051 |
Gas Chromatography
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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP Sil 5 CB | 833. | Guyot, Scheirman, et al., 1999 | He; Column length: 50. m; Column diameter: 0.32 mm; Program: 30C => 55C/min => 85C => 1C/min => 145C => 3C/min => 250C |
References
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Guyot, Scheirman, et al., 1999
Guyot, C.; Scheirman, V.; Collin, S.,
Floral origin markers of heather honeys: Calluna vulgaris and Erica arborea,
Food Chem., 1999, 64, 1, 3-11, https://doi.org/10.1016/S0308-8146(98)00122-8
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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