sulphur trioxide

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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
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
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 O3S+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)12.80 ± 0.04eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)588.3kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity560.3kJ/molN/AHunter and Lias, 1998HL

Electron affinity determinations

EA (eV) Method Reference Comment
1.90 ± 0.10IMRBGleason, 1987See also Dobrin, Boo, et al., 2000; B
2.064 ± 0.085R-ARudny, Sidorov, et al., 1985EA is calculated at 298 K.; value altered from reference due to conversion from electron convention to ion convention; B
1.70 ± 0.15NBIERothe, Tang, et al., 1975B

Ionization energy determinations

IE (eV) Method Reference Comment
13.15 ± 0.05EISnow and Thomas, 1990LL
13.2 ± 0.2EISmith and Stevenson, 1981LLK
12.82 ± 0.01PELloyd, Roberts, et al., 1976LLK
12.81 ± 0.03PEAlderdice and Dixon, 1976LLK
12.82 ± 0.03PEMines and Thomas, 1974LLK
12.73 ± 0.05PEDeKock and Lloyd, 1973LLK
11.0 ± 0.5EIFicalora, Uy, et al., 1968RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
OS+15.1 ± 0.1O2EISnow and Thomas, 1990LL
OS+14.8 ± 0.2O2EISmith and Stevenson, 1981LLK
O2+16.8 ± 0.5SOEISmith and Stevenson, 1981LLK
O2S+18.4 ± 0.1OEISnow and Thomas, 1990LL
O2S+18.3 ± 0.4OEISmith and Stevenson, 1981LLK
S+20.3 ± 0.5O2+OEISmith and Stevenson, 1981LLK


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, . [all data]

Gleason, 1987
Gleason, J.F., as cited in 95MIL/VIG, Ph.D. dissertation, Univ. of Colorado,, 1987. [all data]

Dobrin, Boo, et al., 2000
Dobrin, S.; Boo, B.H.; Alconcel, L.S.; Continetti, R.E., Photoelectron spectroscopy of SO3- at 355 and 266 nm, J. Phys. Chem. A, 2000, 104, 46, 10695-10700, . [all data]

Rudny, Sidorov, et al., 1985
Rudny, E.B.; Sidorov, L.N.; Voyk, O.M., Heterolytic Dissociation of Potassium Sulfate in the Gas Phase and Heats of Formation for Trioxosulfate(1-), Tetraoxosulfate(1-), and Potassium Sulfate(KSO4-) Ions, High Temp., 1985, 23, 238. [all data]

Rothe, Tang, et al., 1975
Rothe, E.W.; Tang, S.Y.; Reck, G.P., Measurement of electron affinities of O3, SO2, and SO3 by collisional ionization, J. Chem. Phys., 1975, 62, 3829. [all data]

Snow and Thomas, 1990
Snow, K.B.; Thomas, T.F., Mass spectrum, ionization potential, and appearance potentials for fragment ions of sulfuric acid vapor, Int. J. Mass Spectrom. Ion Processes, 1990, 96, 49. [all data]

Smith and Stevenson, 1981
Smith, O.I.; Stevenson, J.S., Determination of cross sections for formation of parent and fragment ions by electron impact from SO2 and SO3, J. Chem. Phys., 1981, 74, 6777. [all data]

Lloyd, Roberts, et al., 1976
Lloyd, D.R.; Roberts, P.J.; Hillier, I.H.; Shenton, I.C., On the photoelectron spectrum of sulphur trioxide, Mol. Phys., 1976, 31, 1549. [all data]

Alderdice and Dixon, 1976
Alderdice, D.S.; Dixon, R.N., Photoelectron spectrum of sulphur trioxide, J. Chem. Soc. Faraday Trans. 2, 1976, 72, 372. [all data]

Mines and Thomas, 1974
Mines, G.W.; Thomas, R.K., The photoelectron spectrum of sulphur trioxide: Jahn-Teller distortion in SO3+, Proc. R. Soc. London A:, 1974, 336, 355. [all data]

DeKock and Lloyd, 1973
DeKock, R.L.; Lloyd, D.R., The HeIphotoelectron spectrum of sulphur trioxide, J. Chem. Soc. Dalton Trans., 1973, 526. [all data]

Ficalora, Uy, et al., 1968
Ficalora, P.J.; Uy, O.M.; Muenow, D.W.; Margrave, J.L., Mass spectrometric studies at high temperatures: XXIX. Thermal decomposition and sublimation of alkali metal sulfates, J. Am. Ceram. Soc., 1968, 51, 574. [all data]


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