Gentisic acid

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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 compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)

Proton affinity at 298K

Proton affinity (kJ/mol) Reference Comment
531.6 ± 1.3Kuo, Zhang, et al., 1997T = 298K; Photoionization of HNO yields DHf(HNO+) from which PA(NO) is calculated at 0 K and 298K.; MM

De-protonation reactions

C7H5O4- + Hydrogen cation = Gentisic acid

By formula: C7H5O4- + H+ = C5H11NO2

Quantity Value Units Method Reference Comment
Δr1329. ± 11.kJ/molIMRBBreuker, Knochenmuss, et al., 1999gas phase; Acid: 2,5-dihydroxy benzoic acid; B

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Kuo, Zhang, et al., 1997
Kuo, S.C.; Zhang, Z.Y.; Ross, S.K.; Klemm, R.B.; Johnson, R.D.; Monks, P.S.; Thorn, R.P.; Stief, L.J., Discharge flow-photoionization mass spectrometric study of HNO: Phtoionization efficiency spectrum and ionization energy and proton affinity of NO, J. Phys. Chem. A, 1997, 101, 4035. [all data]

Breuker, Knochenmuss, et al., 1999
Breuker, K.; Knochenmuss, R.; Zenobi, R., Gas-phase basicities of deprotonated matrix-assisted laser desorption/ionization matrix molecules, Int. J. Mass Spectrom., 1999, 184, 1, 25-38, https://doi.org/10.1016/S1387-3806(98)14200-8 . [all data]


Notes

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