Thiourea
- Formula: CH4N2S
- Molecular weight: 76.121
- IUPAC Standard InChIKey: UMGDCJDMYOKAJW-UHFFFAOYSA-N
- CAS Registry Number: 62-56-6
- 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: Urea, thio-; β-Thiopseudourea; Pseudothiourea; Pseudourea, 2-thio-; Thiocarbamide; THU; 2-Thiourea; (NH2)2CS; Sulourea; Urea, 2-thio-; USAF EK-497; Isothiourea; Rcra waste number U219; Thiocarbonic acid diamide; Thiomocovina; 2-Thiopseudourea; Tsizp 34; UN 2877; Sulfourea; NSC 5033
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Gas phase ion energetics data
Go To: Top, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 213.6 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 206.5 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.50 | EI | Baldwin, Loudon, et al., 1976 | LLK |
7.9 | PE | Debies and Rabalais, 1974 | LLK |
8.50 ± 0.05 | EI | Baldwin, Maccoll, et al., Ind. 1966 | RDSH |
8.50 | PE | Mines and Thompson, 1975 | Vertical value; LLK |
8.41 ± 0.03 | PE | Guimon, Pfister-Guillouzo, et al., 1974 | Vertical value; LLK |
8.41 | PE | Guimon, Gonbeau, et al., 1974 | Vertical value; LLK |
References
Go To: Top, Gas phase ion energetics data, 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]
Baldwin, Loudon, et al., 1976
Baldwin, M.A.; Loudon, A.G.; Maccoll, A.; Webb, K.S.,
The nature and fragmentation pathways of the molecular ions of some arylureas, arylthioureas, acetanilides, thioacetanilides and related compounds,
Org. Mass Spectrom., 1976, 11, 1181. [all data]
Debies and Rabalais, 1974
Debies, T.P.; Rabalais, J.W.,
Electronic structure of amino acids and ureas,
J. Electron Spectrosc. Relat. Phenom., 1974, 3, 315. [all data]
Baldwin, Maccoll, et al., Ind. 1966
Baldwin, M.; Maccoll, A.; Kirkien-Konasiewicz, A.; Saville, B.,
Ionisation potentials of the N-methylated thioureas,
Chem., Ind. 1966, 286. [all data]
Mines and Thompson, 1975
Mines, G.W.; Thompson, H.W.,
The photoelectron spectra of amides, thioamides, ureas and thioureas,
Spectrochim. Acta, 1975, 31, 137. [all data]
Guimon, Pfister-Guillouzo, et al., 1974
Guimon, C.; Pfister-Guillouzo, G.; Arbelot, M.; Chanon, M.,
Electronic structure of sulphur compounds. VII. Photoelectron spectra of thiocarbonyl J. Heterocycl. Chem..,
Tetrahedron, 1974, 30, 3831. [all data]
Guimon, Gonbeau, et al., 1974
Guimon, C.; Gonbeau, D.; Pfister-Guillouzo, G.; Asbrink, L.; Sandstrom, J.,
Electronic structure of sulphur compounds. VI. Photoelectron spectra of some simple thiocarbonyl compounds,
J. Electron Spectrosc. Relat. Phenom., 1974, 4, 49. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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