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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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

H3Si- + Hydrogen cation = Silane

By formula: H3Si- + H+ = H4Si

Quantity Value Units Method Reference Comment
Deltar1564. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase
Deltar1560. ± 8.8kJ/molG+TSWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar1559.8 ± 3.5kJ/molD-EANimlos and Ellison, 1986gas phase
Deltar1556. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1564.4kJ/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7
Quantity Value Units Method Reference Comment
Deltar1530. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase
Deltar1526. ± 8.4kJ/molIMREWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar1525.4 ± 3.9kJ/molH-TSNimlos and Ellison, 1986gas phase
Deltar1522. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1533.0kJ/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7

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

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

Quantity Value Units Method Reference Comment
Deltar354. ± 5.9kJ/molN/ANimlos and Ellison, 1986gas phase
Deltar212. ± 10.kJ/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
Deltar1564. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase
Deltar1560. ± 8.8kJ/molG+TSWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar1559.8 ± 3.5kJ/molD-EANimlos and Ellison, 1986gas phase
Deltar1556. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1564.4kJ/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7
Quantity Value Units Method Reference Comment
Deltar1530. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase
Deltar1526. ± 8.4kJ/molIMREWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar1525.4 ± 3.9kJ/molH-TSNimlos and Ellison, 1986gas phase
Deltar1522. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1533.0kJ/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7

Ion clustering 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

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

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

Quantity Value Units Method Reference Comment
Deltar354. ± 5.9kJ/molN/ANimlos and Ellison, 1986gas phase
Deltar212. ± 10.kJ/molTherBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Marilyn E. Jacox

State:   ?


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

Td = 11340 ± 110 gas Nimlos and Ellison, 1986

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 1 Sym. stretch 1856 Ne IR Andrews and Wang, 2002
2 Umbrella 880 ± 120 gas PE Nimlos and Ellison, 1986
e 3 Asym. stretch 1837 Ne IR Andrews and Wang, 2002
3 Asym. stretch 1841.7 H2 IR Wang and Andrews, 2003

Additional references: Jacox, 1994, page 129

Notes

dPhotodissociation threshold

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, 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]

Andrews and Wang, 2002
Andrews, L.; Wang, X., Infrared Spectra of the Novel Si, J. Phys. Chem. A, 2002, 106, 34, 7696, https://doi.org/10.1021/jp0204814 . [all data]

Wang and Andrews, 2003
Wang, X.; Andrews, L., Infrared Spectra of Group 14 Hydrides in Solid Hydrogen: Experimental Observation of PbH, J. Am. Chem. Soc., 2003, 125, 21, 6581, https://doi.org/10.1021/ja029862l . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]


Notes

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