Oxazole
- Formula: C3H3NO
- Molecular weight: 69.0620
- IUPAC Standard InChIKey: ZCQWOFVYLHDMMC-UHFFFAOYSA-N
- CAS Registry Number: 288-42-6
- 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: 1,3-Oxazole
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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 as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 209.5 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 201.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.9 | PE | Kobayashi, Kubota, et al., 1982 | LBLHLM |
9.6 | EI | Audier, Fetizon, et al., 1976 | LLK |
10.15 | PE | Kobayashi, Kubota, et al., 1982 | Vertical value; LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H2N+ | 14.1 | HCO | EI | Audier, Fetizon, et al., 1976 | LLK |
C2H2O+ | 12.2 ± 0.6 | HCN | EI | Audier, Fetizon, et al., 1976 | LLK |
C2H3N+ | 11.0 | CO | EI | Audier, Fetizon, et al., 1976 | LLK |
C3H2NO+ | 12.7 | H | EI | Audier, Fetizon, et al., 1976 | LLK |
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 | NIST Mass Spectrometry Data Center, 1990. |
NIST MS number | 118710 |
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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 110. | 580. | Zhuravleva, 2000 | 50. m/0.3 mm/0.4 μm, He |
Capillary | OV-101 | 110. | 538. | Golovnya, Kuz'menko, et al., 1999 | 50. m/0.3 mm/0.4 μm, He |
Capillary | OV-101 | 110. | 580. | Zhuravleva, Shenderyuk, et al., 1990 | 50. m/0.30 mm/0.40 μm, He |
Capillary | OV-101 | 110. | 580. | Golovnya, Shenderyuk, et al., 1989 | 40. m/0.28 mm/0.40 μm, He |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | PEG-40M | 110. | 1019. | Zhuravleva, Shenderyuk, et al., 1990 | 50. m/0.30 mm/0.40 μm, He |
Capillary | PEG-40M | 110. | 1019. | Golovnya, Shenderyuk, et al., 1989 | 47. m/0.30 mm/0.40 μm, He |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 | 97.3 | Wang, Hou, et al., 2007 | 30. m/0.30 mm/0.25 μm, Helium, 50. C @ 5. min, 5. K/min, 200. C @ 15. min |
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]
Kobayashi, Kubota, et al., 1982
Kobayashi, T.; Kubota, T.; Ezumi, K.; Utsunomiya, C.,
Photoelectron angular distribution study of some isoxazoles combined with perturbation theoretic approach,
Bull. Chem. Soc. Jpn., 1982, 55, 3915. [all data]
Audier, Fetizon, et al., 1976
Audier, H.-E.; Fetizon, M.; Henry, Y.; Prange, T.,
Mecanismes de fragmentation de l'oxazole,
Org. Mass Spectrom., 1976, 11, 1047. [all data]
Zhuravleva, 2000
Zhuravleva, I.L.,
Evaluation of the polarity and boiling points of nitrogen-containing heterocyclic compounds by gas chromatography,
Russ. Chem. Bull. (Engl. Transl.), 2000, 49, 2, 325-328, https://doi.org/10.1007/BF02494682
. [all data]
Golovnya, Kuz'menko, et al., 1999
Golovnya, R.V.; Kuz'menko, T.E.; Zhuravleva, I.L.,
Gas chromatographic indicator of the ability of five- and six-membered heterocyclic nitrogen-containing compounds for self-association in pure liquids,
Russ. Chem. Bull. (Engl. Transl.), 1999, 48, 4, 726-729, https://doi.org/10.1007/BF02496256
. [all data]
Zhuravleva, Shenderyuk, et al., 1990
Zhuravleva, I.L.; Shenderyuk, V.V.; Yakush, E.V.; Golovnya, R.V.,
Calculation of retention indexes of alkyloxazoles and alkylthiazoles in capillary chromatography,
Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.), 1990, 6, 6, 1204-1210, https://doi.org/10.1007/BF00962384
. [all data]
Golovnya, Shenderyuk, et al., 1989
Golovnya, R.V.; Shenderyuk, V.V.; Zhuravleva, I.L.; Yakush, E.V.,
Use of a principle of non-additivity of sorption energies for calculation of retention indices of alkyloxazoles in capillary chromatography,
Zh. Anal. Khim., 1989, 44, 2037-2042. [all data]
Wang, Hou, et al., 2007
Wang, G.; Hou, Z.; Sun, Y.; Liu, Y.; Xie, B.; Liu, S.,
Investigation of pyrolysis behavior of fenoxycarb using PY-GC-MS assisted with chemometric methods,
Chem. Anal., 2007, 52, 141-156. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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