Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

SiH2 radical anion


Gas phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafgas39.4 ± 1.3kcal/molR-EAKasdan, Herbst, et al., 1975 

Reaction thermochemistry data

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

(H2Si- bullet 4294967295Silylidyne) + Silylidyne = H2Si-

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

Quantity Value Units Method Reference Comment
Deltar83.4 ± 2.3kcal/molN/AKasdan, Herbst, et al., 1975gas phase

H2Si- + Hydrogen cation = Silyl radical

By formula: H2Si- + H+ = H3Si

Quantity Value Units Method Reference Comment
Deltar357.2 ± 1.4kcal/molD-EAKasdan, Herbst, et al., 1975gas phase

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, 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: John E. Bartmess

Protonation reactions

H2Si- + Hydrogen cation = Silyl radical

By formula: H2Si- + H+ = H3Si

Quantity Value Units Method Reference Comment
Deltar357.2 ± 1.4kcal/molD-EAKasdan, Herbst, et al., 1975gas phase

Ion clustering data

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

(H2Si- bullet 4294967295Silylidyne) + Silylidyne = H2Si-

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

Quantity Value Units Method Reference Comment
Deltar83.4 ± 2.3kcal/molN/AKasdan, Herbst, et al., 1975gas phase

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, 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:   A


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

Td = 9070 ± 160 gas Kasdan, Herbst, et al., 1975

State:   X


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

a1b2 1,3 Stretch 1823 Ne IR Andrews and Wang, 2002
a1 2 Bend 1200 ± 160 gas PE Kasdan, Herbst, et al., 1975

Additional references: Jacox, 1994, page 21

Notes

dPhotodissociation threshold

References

Go To: Top, Gas phase thermochemistry data, 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.

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]

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]

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


Notes

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