Triphenylmethane
- Formula: C19H16
- Molecular weight: 244.3303
- IUPAC Standard InChIKey: AAAQKTZKLRYKHR-UHFFFAOYSA-N
- CAS Registry Number: 519-73-3
- 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: Benzene, 1,1',1''-methylidynetris-; Methane, triphenyl-; Tritane; Benzene,1,1',1"-methylidynetris-; 1,1',1''-Methylidynetris[benzene]
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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 compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.34 ± 0.03 | PI | Rodionov, Potapov, et al., 1973 | LLK |
8.34 ± 0.04 | PI | Potapov, Kardash, et al., 1972 | LLK |
8.40 ± 0.05 | PE | Distefano, Pignataro, et al., 1976 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C13H11+ | 10.9 | C6H5 | PI | Rodionov, Potapov, et al., 1973 | LLK |
De-protonation reactions
C19H15- + =
By formula: C19H15- + H+ = C19H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 358.7 ± 2.2 | kcal/mol | G+TS | Taft and Bordwell, 1988 | gas phase; B |
ΔrH° | 360.8 ± 2.5 | kcal/mol | G+TS | Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 350.7 ± 2.0 | kcal/mol | IMRE | Taft and Bordwell, 1988 | gas phase; B |
ΔrG° | 352.8 ± 2.3 | kcal/mol | IMRE | Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
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.
Rodionov, Potapov, et al., 1973
Rodionov, A.N.; Potapov, V.K.; Rogozhin, K.L.,
Photoionization of certain aromatic heteroorganic compounds,
High Energy Chem., 1973, 7, 249, In original 278. [all data]
Potapov, Kardash, et al., 1972
Potapov, V.K.; Kardash, I.E.; Sorokin, V.V.; Sokolov, S.A.; Evlasheva, T.I.,
Photoionization of heteroaromatic compounds,
Khim. Vys. Energ., 1972, 6, 392. [all data]
Distefano, Pignataro, et al., 1976
Distefano, G.; Pignataro, S.; Szepes, L.; Borossay, J.,
Photoelectron spectroscopy study of the triphenyl derivatives of the group IV elements,
J. Organomet. Chem., 1976, 104, 173. [all data]
Taft and Bordwell, 1988
Taft, R.W.; Bordwell, F.G.,
Structural and Solvent Effects Evaluated from Acidities Measured in Dimethyl Sulfoxide and in the Gas Phase,
Acc. Chem. Res., 1988, 21, 12, 463, https://doi.org/10.1021/ar00156a005
. [all data]
Bartmess
Bartmess, J.E.,
The Gas Phase Thermochemistry of Ph3C-, Ph3C., and Ph3C+, 32nd Ann. Conf. on Mass Spectrom. Allied Topics, San Antonio TX 27 May-1 June 1984. Abstracts p. 472. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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