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Mercapto radical

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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:
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
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

View reactions leading to HS+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.422 ± 0.001eVN/AN/AL
Quantity Value Units Method Reference Comment
Deltaf(+) ion1143. ± 4.kJ/molN/AN/A 
Quantity Value Units Method Reference Comment
DeltafH(+) ion,0K1143. ± 4.kJ/molN/AN/A 

Electron affinity determinations

EA (eV) Method Reference Comment
2.31473LPESChaibi, Delsart, et al., 2006For H(32)S-. Given: 2.3147282(17) eV; B
2.3170 ± 0.0020LPESBreyer, Frey, et al., 1981B
2.326 ± 0.091D-EABartmess, Scott, et al., 1979value altered from reference due to change in acidity scale; B
2.32085D-EAShiell, Hu, et al., 19000K:350.125±0.009 kcal/mol, corr to 298K from Gurvich, Veyts, et al., With EA( Breyer, Frey, et al., 1981)BDE(0K)=89.97±0.05; B
2.3140 ± 0.0030LPDJanousek and Brauman, 1981B
2.3016 ± 0.0013LPDEyler and Atkinson, 1974B
2.319 ± 0.010PDSteiner, 1968B
2.19422R-ARefaey, 1976B
2.31521N/ACheck, Faust, et al., 2001MnO2-(t); ; «DELTA»S(EA)=5.4; B
2.298 ± 0.039SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.; B

Ionization energy determinations

IE (eV) Method Reference Comment
10.4219TEMilan, Buma, et al., 1996LL
10.4219 ± 0.0004TEHsu, Baldwin, et al., 1994LL
10.40 ± 0.01ENDSmith, Adams, et al., 1981LLK
10.43EVALHuber and Herzberg, 1979LLK
10.37 ± 0.01PEDunlavey, Dyke, et al., 1979LLK
10.41 ± 0.03SMorrow, 1966RDSH
10.5 ± 0.1EIPalmer and Lossing, 1962RDSH

De-protonation reactions

S- + Hydrogen cation = Mercapto radical

By formula: S- + H+ = HS

Quantity Value Units Method Reference Comment
Deltar1465.03 ± 0.29kJ/molD-EABlondel, Chaibi, et al., 2005gas phase; (32)S: 2.0771040(9) eV: revised analysis of Blondel, Delsart, et al., 2001; B
Deltar1465. ± 12.kJ/molEndoRempala and Ervin, 2000gas phase; B
Quantity Value Units Method Reference Comment
Deltar1441.8 ± 0.79kJ/molH-TSBlondel, Chaibi, et al., 2005gas phase; (32)S: 2.0771040(9) eV: revised analysis of Blondel, Delsart, et al., 2001; B
Deltar1442. ± 13.kJ/molH-TSRempala and Ervin, 2000gas phase; B

Anion protonation reactions

HS- + Hydrogen cation = Hydrogen sulfide

By formula: HS- + H+ = H2S

Quantity Value Units Method Reference Comment
Deltar1470. ± 3.kJ/molAVGN/AAverage of 6 out of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar1441. ± 13.kJ/molH-TSRempala and Ervin, 2000gas phase; B
Deltar1443. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Deltar1443.1 ± 0.42kJ/molH-TSShiell, Hu, et al., 1900gas phase; 0K:350.125±0.009 kcal/mol, corr to 298K from Gurvich, Veyts, et al., With EA( Breyer, Frey, et al., 1981)BDE(0K)=89.97±0.05; B
Deltar1446. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; B
Deltar1432.2kJ/molN/ACheck, Faust, et al., 2001gas phase; MnO2-(t); ; «DELTA»S(EA)=5.4; 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.

Chaibi, Delsart, et al., 2006
Chaibi, W.; Delsart, C.; Drag, C.; Blondel, C., High precision measurement of the (SH)-S-32 electron affinity by laser detachment microscopy, J. Molec. Spectros., 2006, 239, 1, 11-15, https://doi.org/10.1016/j.jms.2006.05.012 . [all data]

Breyer, Frey, et al., 1981
Breyer, F.; Frey, P.; Hotop, H., High Resolution Photoelectron Spectrometry of Negative Ions: Rotational Transitions in Laser-Photodetachment of OH-, SH-, and SD-, Z. Phys. A, 1981, 300, 1, 7, https://doi.org/10.1007/BF01412609 . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Shiell, Hu, et al., 1900
Shiell, R.C.; Hu, X.K.; Hu, Q.J.; Hepburn, J.W., A determination of the bond dissociation energy (D-0(H-SH)): Threshold ion-pair production spectroscopy (TIPPS) of a triatomic molecule, J. Phys. Chem. A, 1900, 104, 19, 4339-4342, https://doi.org/10.1021/jp000025k . [all data]

Gurvich, Veyts, et al.
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B., Hemisphere Publishing, NY, 1989, V. 1 2, Thermodynamic Properties of Individual Substances, 4th Ed. [all data]

Janousek and Brauman, 1981
Janousek, B.K.; Brauman, J.I., Electron Photodetachment from HS-. The Electron Affinity of HS, Phys. Rev. A, 1981, 23, 4, 1673, https://doi.org/10.1103/PhysRevA.23.1673 . [all data]

Eyler and Atkinson, 1974
Eyler, J.R.; Atkinson, G.H., Dye laser-induced photodetachment of electrons from SH- studied by ICR spectroscopy, Chem. Phys. Lett., 1974, 28, 217. [all data]

Steiner, 1968
Steiner, B., Photodetachment of Electrons From SH-, J. Chem. Phys., 1968, 49, 11, 5097, https://doi.org/10.1063/1.1670004 . [all data]

Refaey, 1976
Refaey, K.M.A., Endoergic ion-molecule-collision processes of negative ions. II. Collisions of I- on H2S, CS2, and COS, J. Chem. Phys., 1976, 65, 2002. [all data]

Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S., Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements, J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l . [all data]

Page and Goode, 1969
Page, F.M.; Goode, G.C., Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]

Milan, Buma, et al., 1996
Milan, J.B.; Buma, W.J.; deLange, C.A., Zero-kinetic-energy pulsed-field ionization spectroscopy of the a 1«delta» state of SH+ (CD+), J. Chem. Phys., 1996, 104, 521. [all data]

Hsu, Baldwin, et al., 1994
Hsu, C.-W.; Baldwin, D.P.; Liao, C.-L.; Ng, C.Y., Rotationally resolved nonresonant two-photon ionization of SH, J. Chem. Phys., 1994, 100, 8047. [all data]

Smith, Adams, et al., 1981
Smith, D.; Adams, N.G.; Lindinger, W., Reactions of the HnS ions (n = 0 to 3) with several molecular gases at thermal energies, J. Chem. Phys., 1981, 75, 3365. [all data]

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]

Dunlavey, Dyke, et al., 1979
Dunlavey, S.; Dyke, J.; Fayad, N.; Jonathan, N.; Morris, A., Vacuum ultraviolet photoelectron spectroscopy of transient species. Part 10. The SH(X2çi) radical and the S(3P) atom, Mol. Phys., 1979, 38, 729. [all data]

Morrow, 1966
Morrow, B.A., The absorption spectrum of SH and SD in the vacuum ultraviolet, Can. J. Phys., 1966, 44, 2447. [all data]

Palmer and Lossing, 1962
Palmer, T.F.; Lossing, F.P., Free radicals by mass spectrometry. XXVIII. The HS, CH3S, and phenyl-S radicals: ionization potentials and heats of formation, J. Am. Chem. Soc., 1962, 84, 4661. [all data]

Blondel, Chaibi, et al., 2005
Blondel, C.; Chaibi, W.; Delsart, C.; Drag, C.; Goldfarb, F.; Kroger, S., The electron affinities of O, Si, and S revisited with the photodetachment microscope, Eur. Phys. J. D, 2005, 33, 3, 335-342, https://doi.org/10.1140/epjd/e2005-00069-9 . [all data]

Blondel, Delsart, et al., 2001
Blondel, C.; Delsart, C.; Goldfarb, F., Electron spectrometry at the mu eV level and the electron affinities of Si and F, J. Phys. B: Atom. Mol. Opt. Phys., 2001, 34, 9, L281-L288, https://doi.org/10.1088/0953-4075/34/9/101 . [all data]

Rempala and Ervin, 2000
Rempala, K.; Ervin, K.M., Collisional activation of the Endoergic Hydrogen Atom Transfer Reaction S-(2P) + H2 - SH- + H, J. Chem. Phys., 2000, 112, 10, 4579, https://doi.org/10.1063/1.481016 . [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]


Notes

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