Phosphine, methyl-
- Formula: CH5P
- Molecular weight: 48.0242
- IUPAC Standard InChIKey: SAWKFRBJGLMMES-UHFFFAOYSA-N
- CAS Registry Number: 593-54-4
- 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: Methylphosphine; CH3PH2
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Gas phase ion energetics 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 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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to CH5P+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 851.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 817.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.12 | PE | Hodges, McDonnell, et al., 1980 | LLK |
9.12 ± 0.07 | PE | Staley and Beauchamp, 1974 | LLK |
9.72 ± 0.15 | EI | Wada and Kiser, 1964 | RDSH |
9.62 | PE | Elbel, Dieck, et al., 1982 | Vertical value; LBLHLM |
9.70 | PE | Cowley, Kemp, et al., 1982 | Vertical value; LBLHLM |
9.6 ± 0.1 | PE | Cradock, Ebsworth, et al., 1972 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CHP+ | 14.7 ± 0.3 | ? | EI | Wada and Kiser, 1964 | RDSH |
CH2P+ | 14.7 ± 0.2 | ? | EI | Wada and Kiser, 1964 | RDSH |
CH3+ | 14.8 ± 0.2 | ? | EI | Wada and Kiser, 1964 | RDSH |
CH3P+ | 12.2 ± 0.2 | H2 | EI | Wada and Kiser, 1964 | RDSH |
CH4P+ | 11.6 ± 0.12 | H | EI | Wada and Kiser, 1964 | RDSH |
PC+ | 14.5 ± 0.3 | ? | EI | Wada and Kiser, 1964 | RDSH |
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]
Hodges, McDonnell, et al., 1980
Hodges, R.V.; McDonnell, T.J.; Beauchamp, J.L.,
Properties reactions of trimethyl phosphite, trimethyl phosphate, triethyl phosphate, and trimethyl phosphorothionate by ion cyclotron resonance spectroscopy,
J. Am. Chem. Soc., 1980, 102, 1327. [all data]
Staley and Beauchamp, 1974
Staley, R.H.; Beauchamp, J.L.,
Basicities ion-molecule reactions of the methylphosphines in the gas phase by ion cyclotron resonance spectroscopy,
J. Am. Chem. Soc., 1974, 96, 6252. [all data]
Wada and Kiser, 1964
Wada, Y.; Kiser, R.W.,
A mass spectrometric study of some alkyl-substituted phosphines,
J. Phys. Chem., 1964, 68, 2290. [all data]
Elbel, Dieck, et al., 1982
Elbel, S.; Dieck, H.T.; Demuth, R.,
Photoelectron sSpectra of group V compounds. IX. The relative perfluoroalkyl substituent effect,
J. Fluorine Chem., 1982, 19, 349. [all data]
Cowley, Kemp, et al., 1982
Cowley, A.H.; Kemp, R.A.; Lattman, M.; McKee, M.L.,
Lewis base behavior of methylated and fluorinated phosphines. A photoelectron spectroscopic investigation,
Inorg. Chem., 1982, 21, 85. [all data]
Cradock, Ebsworth, et al., 1972
Cradock, S.; Ebsworth, E.A.V.; Savage, W.J.; Whiteford, R.A.,
Photoelectron spectra of some methyl, silyl and germyl amines, phosphines and arsines,
J. Chem. Soc. Faraday Trans. 2, 1972, 68, 934. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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