Dimethylphosphine
- Formula: C2H7P
- Molecular weight: 62.0507
- IUPAC Standard InChIKey: YOTZYFSGUCFUKA-UHFFFAOYSA-N
- CAS Registry Number: 676-59-5
- 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: Phosphine, dimethyl-; (CH3)2PH
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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 C2H7P+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 218.0 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 209.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.47 | PE | Hodges, McDonnell, et al., 1980 | LLK |
8.5 ± 0.1 | PE | Aue, Webb, et al., 1980 | LLK |
8.47 ± 0.07 | PE | Staley and Beauchamp, 1974 | LLK |
9.7 | EI | Fischler and Halmann, 1964 | RDSH |
9.10 | PE | Cowley, Kemp, et al., 1982 | Vertical value; LBLHLM |
9.10 | PE | Lappert, Pedley, et al., 1975 | Vertical value; LLK |
9.13 | PE | Cowley, Dewar, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CHP+ | 14.1 | ? | EI | Fischler and Halmann, 1964 | RDSH |
CH3P+ | 11.9 | ? | EI | Fischler and Halmann, 1964 | RDSH |
C2H6P+ | 12.2 | H | EI | Fischler and Halmann, 1964 | RDSH |
P+ | 11.9 | ? | EI | Fischler and Halmann, 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]
Aue, Webb, et al., 1980
Aue, D.H.; Webb, H.M.; Davidson, W.R.; Vidal, M.; Bowers, M.T.; Goldwhite, H.; Vertal, L.E.; Douglas, J.E.; Kollman, P.A.; Kenyon, G.L.,
Proton affinities photoelectron spectra of three-membered-ring J. Heterocycl. Chem.,
J. Am. Chem. Soc., 1980, 102, 5151. [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]
Fischler and Halmann, 1964
Fischler, J.; Halmann, M.,
Electron-impact studies of phosphorus compounds,
J. Chem. Soc., 1964, 31. [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]
Lappert, Pedley, et al., 1975
Lappert, M.F.; Pedley, J.B.; Wilkins, B.T.; Stelzer, O.; Unger, E.,
Bonding studies of compounds of boron and the group 3-5 elements. Part XIII. He(I) photoelectron spectra of phosphines RnPX3-n (R=Me or Bu'; X=H, Cl, or F; n=1-3), (Me2N)nPCl3-n(n=1-3), and (R2N)PF2(R=Me or Et),
J. Chem. Soc. Dalton Trans., 1975, 1207. [all data]
Cowley, Dewar, et al., 1974
Cowley, A.H.; Dewar, M.J.S.; Goodman, D.W.; Padolina, M.C.,
Detection of rotational isomerism in diphosphines and diarsines by photoelectron spectroscopy,
J. Am. Chem. Soc., 1974, 96, 2648. [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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