Benzophenone
- Formula: C13H10O
- Molecular weight: 182.2179
- IUPAC Standard InChIKey: RWCCWEUUXYIKHB-UHFFFAOYSA-N
- CAS Registry Number: 119-61-9
- 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: Methanone, diphenyl-; α-Oxodiphenylmethane; α-Oxoditane; Benzene, benzoyl-; Benzoylbenzene; Diphenyl ketone; Diphenylmethanone; Phenyl ketone; Ketone, diphenyl; alpha-Oxodiphenylmethane; alpha-Oxoditane; Adjutan 6016; Kayacure BP; Diphenyl-methanon; NSC 8077; 1-Benzophenone; Cinnarizine M (benzophenone); Cyclizine M (Benzophenone)
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, UV/Visible spectrum, 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: José A. Martinho Simões
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Individual Reactions
C13H10NaO (solution) + 0.5 (solution) = C4CoNaO4 (solution) + (solution)
By formula: C13H10NaO (solution) + 0.5C8Co2O8 (solution) = C4CoNaO4 (solution) + C13H10O (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -157. ± 11. | kJ/mol | RSC | Kiss, Nolan, et al., 1994 | solvent: Tetrahydrofuran |
(solution) + (cr) = C13H10NaO (solution)
By formula: C13H10O (solution) + Na (cr) = C13H10NaO (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -161.1 ± 2.5 | kJ/mol | RSC | Kiss, Nolan, et al., 1994 | solvent: Tetrahydrofuran |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, UV/Visible spectrum, 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
L - 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
B - John E. Bartmess
View reactions leading to C13H10O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.08 ± 0.04 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 882.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 852.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.62 ± 0.10 | IMRE | Grimsrud, Caldwell, et al., 1985 | ΔGea(423 K) = -15.3 kcal/mol; ΔSea (estimated) = +2.0 eu; B |
1.110 ± 0.040 | LPES | Maeyama, Yagi, et al., 2008 | Stated EA is Vertical Detachment Energy. Threshold adiabatic EA appears to be ca. 0.6 eV - JEB; B |
0.655 ± 0.087 | IMRE | Huh, Kang, et al., 1999 | ΔG(EA) 343K; anchored to ΔG value. Including anchor ΔS, EA is ca. 0.4 kcal/mol more bound.; B |
0.694 ± 0.048 | IMRE | Fukuda and McIver, 1985 | ΔGea(355 K) = -16.7 kcal/mol; ΔSea = 2.0, est. from data in Kebarle and Chowdhury, 1987; B |
0.642 ± 0.052 | ECD | Chen and Wentworth, 1983 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.4 ± 0.1 | EI | Grutzmacher and Schubert, 1979 | LLK |
9.28 | EI | Elder, Beynon, et al., 1976 | LLK |
9.5 ± 0.1 | EI | Krenmayr, Heller, et al., 1974 | LLK |
9.5 ± 0.1 | EI | Heller, Varmuza, et al., 1974 | LLK |
9.46 | EI | Benoit, 1973 | LLK |
9.14 ± 0.03 | PI | Iskakov and Potapov, 1971 | LLK |
9.46 ± 0.05 | EI | Natalis and Franklin, 1965 | RDSH |
9.35 ± 0.04 | EI | Foffani, Pignataro, et al., 1964 | RDSH |
9.4 | PI | Terenin, 1961 | RDSH |
9.05 ± 0.05 | PE | McAlduff and Bunbury, 1979 | Vertical value; LLK |
9.05 | PE | Centineo, Fragala, et al., 1978 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H5+ | 15.67 | C6H5+CO | EI | Benoit, 1973 | LLK |
C6H5+ | 16.22 ± 0.07 | ? | EI | Natalis and Franklin, 1965 | RDSH |
C7H5O+ | 12.0 ± 0.1 | C6H5 | EI | Grutzmacher and Schubert, 1979 | LLK |
C7H5O+ | 11.45 | C6H5 | EI | Elder, Beynon, et al., 1976 | LLK |
C7H5O+ | 11.4 ± 0.1 | C6H5 | EI | Heller, Varmuza, et al., 1974 | LLK |
C7H5O+ | 11.72 | C6H5 | EI | Benoit, 1973 | LLK |
C7H5O+ | 12.00 ± 0.05 | C6H5 | EI | Natalis and Franklin, 1965 | RDSH |
C12H8+ | 17.48 ± 0.12 | ? | EI | Natalis and Franklin, 1965 | RDSH |
C12H9+ | 15.28 ± 0.05 | CO+H? | EI | Natalis and Franklin, 1965 | RDSH |
C12H10+ | 12.24 ± 0.13 | CO | EI | Natalis and Franklin, 1965 | RDSH |
UV/Visible spectrum
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina
Spectrum
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Additional Data
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Source | Terenin and Ermolaev, 1952 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 653 |
Instrument | n.i.g. |
Melting point | 47.8 |
Boiling point | 305.4 |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kiss, Nolan, et al., 1994
Kiss, G.; Nolan, S.P.; Hoff, C.D.,
Inorg. Chim. Acta, 1994, 227, 285. [all data]
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]
Grimsrud, Caldwell, et al., 1985
Grimsrud, E.; Caldwell, G.; Kebarle, P.,
Electron affinities from electron transfer equilibria: A- + B = A + B-,
J. Am. Chem. Soc., 1985, 107, 4627. [all data]
Maeyama, Yagi, et al., 2008
Maeyama, T.; Yagi, I.; Fujii, A.; Mikami, N.,
Photoelectron spectroscopy of microsolvated benzophenone radical anions to reveal the origin of solvatochromic shifts in alcoholic media,
Chem. Phys. Lett., 2008, 457, 1-3, 18-22, https://doi.org/10.1016/j.cplett.2008.03.055
. [all data]
Huh, Kang, et al., 1999
Huh, C.; Kang, C.H.; Lee, H.W.; Nakamura, H.; Mishima, M.; Tsuno, Y.; Yamataka, H.,
Thermodynamic stabilities and resonance demand of aromatic radical anions in the gas phase,
Bull. Chem. Soc. Japan, 1999, 72, 5, 1083-1091, https://doi.org/10.1246/bcsj.72.1083
. [all data]
Fukuda and McIver, 1985
Fukuda, E.K.; McIver, R.T., Jr.,
Relative electron affinities of substituted benzophenones, nitrobenzenes, and quinones. [Anchored to EA(SO2) from 74CEL/BEN],
J. Am. Chem. Soc., 1985, 107, 2291. [all data]
Kebarle and Chowdhury, 1987
Kebarle, P.; Chowdhury, S.,
Electron affinities and electron transfer reactions,
Chem. Rev., 1987, 87, 513. [all data]
Chen and Wentworth, 1983
Chen, E.C.M.; Wentworth, W.E.,
Determination of molecular electron affinities using the electron capture detector in the pulse sampling mode at steady state,
J. Phys. Chem., 1983, 87, 45. [all data]
Grutzmacher and Schubert, 1979
Grutzmacher, H.-F.; Schubert, R.,
Substituent effects in the mass spectra of benzoyl hetarenes,
Org. Mass Spectrom., 1979, 14, 567. [all data]
Elder, Beynon, et al., 1976
Elder, J.F.; Beynon, J.H.; Cooks, R.G.,
The benzoyl ion. Thermochemistry and kinetic energy release,
Org. Mass Spectrom., 1976, 11, 415. [all data]
Krenmayr, Heller, et al., 1974
Krenmayr, P.; Heller, R.; Varmuza, K.,
Massenspektrometrische untersuchungen an benzophenon und substituierten benzophenonen. I. Ermittlung thermodynamischer grossen,
Org. Mass Spectrom., 1974, 9, 998. [all data]
Heller, Varmuza, et al., 1974
Heller, R.; Varmuza, K.; Krenmayr, P.,
Massenspektrometrische untersuchung des substituenteneffektes bei einfach substituierten benzophenonen,
Monatsh. Chem., 1974, 105, 787. [all data]
Benoit, 1973
Benoit, F.,
The benzoyl cation: The participation of isolated electronic excited states in the dissociation of molecular ions of the form [C6H5COX]+,
Org. Mass Spectrom., 1973, 7, 1407. [all data]
Iskakov and Potapov, 1971
Iskakov, L.I.; Potapov, V.K.,
Photionization and decomposition of benzaldehyde, acetophenone, and benzophenone,
High Energy Chem., 1971, 5, 238, In original 265. [all data]
Natalis and Franklin, 1965
Natalis, P.; Franklin, J.L.,
Ionization and dissociation of diphenyl and condensed ring aromatics by electron impact. II. Diphenylcarbonyls and ethers,
J. Phys. Chem., 1965, 69, 2943. [all data]
Foffani, Pignataro, et al., 1964
Foffani, A.; Pignataro, S.; Cantone, B.; Grasso, F.,
Ionization potentials and substituent effects for aromatic carbonyl compounds,
Z. Physik. Chem. (Frankfurt), 1964, 42, 221. [all data]
Terenin, 1961
Terenin, A.,
Charge transfer in organic solids, induced by light,
Proc. Chem. Soc., London, 1961, 321. [all data]
McAlduff and Bunbury, 1979
McAlduff, E.J.; Bunbury, D.L.,
Photoelectron spectra of some aromatic mono-and di-ketones,
J. Electron Spectrosc. Relat. Phenom., 1979, 17, 81. [all data]
Centineo, Fragala, et al., 1978
Centineo, G.; Fragala, I.; Bruno, G.; Spampinato, S.,
Photoelectron spectroscopy of benzophenone, acetophenone and their ortho-alkyl derivatives,
J. Mol. Struct., 1978, 44, 203. [all data]
Terenin and Ermolaev, 1952
Terenin, A.N.; Ermolaev, V.L.,
Sensibilized phosphorescence of organic molecules at low temperatures,
Dokl. Akad. Nauk SSSR, 1952, 85, 3, 547-550. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, UV/Visible spectrum, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity IE (evaluated) Recommended ionization energy ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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