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SiH radical anion


Gas phase 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

Quantity Value Units Method Reference Comment
Deltafgas58.7 ± 2.6kcal/molAcidKasdan, Herbst, et al., 1975 

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

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

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

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

Constants of diatomic molecules

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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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through August, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 28SiH-
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b 1Sigma+ [8460] (2100) 1        1.50 1  
a 1Delta [4580] (2100) 1        1.50 1  
X 3Sigma- [0] (2175) 1        1.474 1  

Notes

1Franck-Condon analysis of the photodetachment spectrum Kasdan, Herbst, et al., 1975.
2From D00(SiH) and the electron affinities of Si and SiH.
3From laser photoelectron spectroscopy Kasdan, Herbst, et al., 1975. See also SiH missing citation.

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, 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]


Notes

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