Benzamide

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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:
B - John E. Bartmess
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)213.2kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity205.8kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.25EIElder, Beynon, et al., 1976LLK
9.60EIBenoit, 1973LLK
9.4 ± 0.2EICotter, Soc. 1965RDSH
9.45PEMcAlduff, Lynch, et al., 1978Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C6H5+14.21NH2+COEIBenoit, 1973LLK
C6H5+13.5 ± 0.1?EICotter, Soc. 1965RDSH
C7H5N+10.19 ± 0.10H2OEICotter, 1964RDSH
C7H5O+10.1NH2EIElder, Beynon, et al., 1976LLK
C7H5O+11.09NH2EIBenoit, 1973LLK
C7H5O+9.9 ± 0.1NH2EICotter, Soc. 1965RDSH

De-protonation reactions

C7H6NO- + Hydrogen cation = Benzamide

By formula: C7H6NO- + H+ = C7H7NO

Quantity Value Units Method Reference Comment
Δr354.0 ± 2.1kcal/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr347.0 ± 2.0kcal/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B

UV/Visible spectrum

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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 compiled by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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UVVis spectrum
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Additional Data

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Source Ramart-Lucas and Guilmart, 1950
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. 5265
Instrument n.i.g.
Melting point 129.1
Boiling point 290

References

Go To: Top, 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.

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]

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]

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]

Cotter, Soc. 1965
Cotter, J.L., Electron-impact fragmentation of pentafluorobenzamide, J. Chem., Soc. 1965, 5742. [all data]

McAlduff, Lynch, et al., 1978
McAlduff, E.J.; Lynch, B.M.; Houk, K.N., Photoelectron spectra of substituted benzamides, Can. J. Chem., 1978, 56, 495. [all data]

Cotter, 1964
Cotter, J.L., Electron impact fragmentation patterns of acetanilide and benzamide, J. Chem. Soc., 1964, 5477. [all data]

Taft, 1987
Taft, R.W., The Nature and Analysis of Substitutent Electronic Effects, Personal communication. See also Prog. Phys. Org. Chem., 1987, 16, 1. [all data]

Ramart-Lucas and Guilmart, 1950
Ramart-Lucas, P.; Guilmart, T., Sur les variations d'absorption dans les series homologues, Bull. Soc. Chim. Fr., 1950, 17, 405-411. [all data]


Notes

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