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MeSiH2 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

CH5Si- + Hydrogen cation = Silane, methyl-

By formula: CH5Si- + H+ = CH6Si

Quantity Value Units Method Reference Comment
Deltar1579. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase
Deltar1582. ± 13.kJ/molD-EAWetzel, Salomon, et al., 1989gas phase
Deltar1582. ± 8.8kJ/molG+TSWetzel, Salomon, et al., 1989gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale
Deltar1613. ± 17.kJ/molG+TSDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.
Quantity Value Units Method Reference Comment
Deltar1544. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase
Deltar1546. ± 13.kJ/molH-TSWetzel, Salomon, et al., 1989gas phase
Deltar1546. ± 8.4kJ/molIMREWetzel, Salomon, et al., 1989gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale
Deltar1577. ± 17.kJ/molIMRBDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.

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

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
1.193 ± 0.035LPDWetzel, Salomon, et al., 1989 

Protonation reactions

CH5Si- + Hydrogen cation = Silane, methyl-

By formula: CH5Si- + H+ = CH6Si

Quantity Value Units Method Reference Comment
Deltar1579. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase
Deltar1582. ± 13.kJ/molD-EAWetzel, Salomon, et al., 1989gas phase
Deltar1582. ± 8.8kJ/molG+TSWetzel, Salomon, et al., 1989gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale
Deltar1613. ± 17.kJ/molG+TSDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.
Quantity Value Units Method Reference Comment
Deltar1544. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase
Deltar1546. ± 13.kJ/molH-TSWetzel, Salomon, et al., 1989gas phase
Deltar1546. ± 8.4kJ/molIMREWetzel, Salomon, et al., 1989gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale
Deltar1577. ± 17.kJ/molIMRBDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.

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]

Damrauer, Kass, et al., 1988
Damrauer, R.; Kass, S.R.; DePuy, C.H., Gas-Phase Acidities of Methylsilanes: C-H versus Si-H, Organomet., 1988, 7, 3, 637, https://doi.org/10.1021/om00093a011 . [all data]


Notes

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