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Silylene


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
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

View reactions leading to H2Si+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)200.6kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity192.2kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Deltaf(+) ion275.kcal/molN/AN/A 

Electron affinity determinations

EA (eV) Method Reference Comment
1.123 ± 0.022LPESKasdan, Herbst, et al., 1975B

Ionization energy determinations

IE (eV) Method Reference Comment
8.92 ± 0.07ENDBoo and Armentrout, 1987LBLHLM
<=9.15 ± 0.02PIBerkowitz, Greene, et al., 1987LBLHLM
8.244 ± 0.025PIBerkowitz, Greene, et al., 1987LBLHLM
9.41 ± 0.03PIDing, Cassidy, et al., 1985LBLHLM

De-protonation reactions

HSi- + Hydrogen cation = Silylene

By formula: HSi- + H+ = H2Si

Quantity Value Units Method Reference Comment
Deltar359.0 ± 2.3kcal/molD-EAKasdan, Herbst, et al., 1975gas phase; 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.

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]

Kasdan, Herbst, et al., 1975
Kasdan, A.; Herbst, E.; Lineberger, W.C., Laser photoelectron spectrometry of the negative ions of silicon and its hydrides, J. Chem. Phys., 1975, 62, 541. [all data]

Boo and Armentrout, 1987
Boo, B.H.; Armentrout, P.B., Reaction of silicon ion (2P) with silane (SiH4, SiD4) heats of formation of SiHn, SiHn+ (n=1,2,3), and Si2Hn+ (n=0,1,2,3) remarkable isotope exchange reaction involving four hydrogen shifts, J. Am. Chem. Soc., 1987, 109, 3549. [all data]

Berkowitz, Greene, et al., 1987
Berkowitz, J.; Greene, J.P.; Cho, H.; Ruscic, B., Photoionization mass spectrometric studies of SiHn (n=1-4), J. Chem. Phys., 1987, 86, 1235. [all data]

Ding, Cassidy, et al., 1985
Ding, A.; Cassidy, R.; Cordis, L.; Lampe, F., The photoionization spectra of effusing and supersonic molecular beams of Mmnosilane, J. Chem. Phys., 1985, 83, 3426. [all data]


Notes

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