SiH3 anion


Reaction thermochemistry 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 by: John E. Bartmess

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Individual Reactions

H3Si- + Hydrogen cation = Silane

By formula: H3Si- + H+ = H4Si

Quantity Value Units Method Reference Comment
Δr373.9 ± 2.1kcal/molG+TSGal, Decouzon, et al., 2001gas phase
Δr372.9 ± 2.1kcal/molG+TSWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Δr372.80 ± 0.84kcal/molD-EANimlos and Ellison, 1986gas phase
Δr372.0 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Δr373.90kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; ΔS(EA)=5.7
Quantity Value Units Method Reference Comment
Δr365.7 ± 2.0kcal/molIMREGal, Decouzon, et al., 2001gas phase
Δr364.7 ± 2.0kcal/molIMREWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Δr364.58 ± 0.94kcal/molH-TSNimlos and Ellison, 1986gas phase
Δr363.8 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Δr366.40kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; ΔS(EA)=5.7

(H3Si- • 4294967295Silylene) + Silylene = H3Si-

By formula: (H3Si- • 4294967295H2Si) + H2Si = H3Si-

Quantity Value Units Method Reference Comment
Δr84.5 ± 1.4kcal/molN/ANimlos and Ellison, 1986gas phase
Δr50.6 ± 2.5kcal/molTherBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

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 by: John E. Bartmess

Protonation reactions

H3Si- + Hydrogen cation = Silane

By formula: H3Si- + H+ = H4Si

Quantity Value Units Method Reference Comment
Δr373.9 ± 2.1kcal/molG+TSGal, Decouzon, et al., 2001gas phase
Δr372.9 ± 2.1kcal/molG+TSWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Δr372.80 ± 0.84kcal/molD-EANimlos and Ellison, 1986gas phase
Δr372.0 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Δr373.90kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; ΔS(EA)=5.7
Quantity Value Units Method Reference Comment
Δr365.7 ± 2.0kcal/molIMREGal, Decouzon, et al., 2001gas phase
Δr364.7 ± 2.0kcal/molIMREWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Δr364.58 ± 0.94kcal/molH-TSNimlos and Ellison, 1986gas phase
Δr363.8 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Δr366.40kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; ΔS(EA)=5.7

References

Go To: Top, Reaction thermochemistry data, 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.

Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C., Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes, J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j . [all data]

Wetzel, Salomon, et al., 1989
Wetzel, D.M.; Salomon, K.E.; Berger, S.; Brauman, J.I., Gas-Phase Acidities of Organosilanes and Electron Affinities of Organosilyl Radicals, J. Am. Chem. Soc., 1989, 111, 11, 3835, https://doi.org/10.1021/ja00193a013 . [all data]

Nimlos and Ellison, 1986
Nimlos, M.R.; Ellison, G.B., Photoelectron spectroscopy of SiH3- and SiD3-, J. Am. Chem. Soc., 1986, 108, 6522. [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]

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]


Notes

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