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Disilane


Phase change 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.

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
158.3 - 258.93.83601905.406-23.4Stull, 1947Coefficents calculated by NIST from author's data.

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

H5Si2- + Hydrogen cation = Disilane

By formula: H5Si2- + H+ = H6Si2

Quantity Value Units Method Reference Comment
Deltar<313.5 ± 2.8kcal/molAcidKrishnakumar and Srivastava, 1991gas phase; From Si2H6, AP = 0.0 eV/Data for SiH4 plus a-Si effects imply «DELTA»Hacid ca. 360. G3MP2B3 calculations give dHacid=360 kcal/mol
Quantity Value Units Method Reference Comment
Deltar<304.7 ± 3.4kcal/molH-TSKrishnakumar and Srivastava, 1991gas phase; From Si2H6, AP = 0.0 eV/Data for SiH4 plus a-Si effects imply «DELTA»Hacid ca. 360. G3MP2B3 calculations give dHacid=360 kcal/mol

References

Go To: Top, Phase change data, Reaction thermochemistry data, Notes

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

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Krishnakumar and Srivastava, 1991
Krishnakumar, E.; Srivastava, S.K., Dissociative Electron Attachment of Electrons with Si2H6, Int. J. Mass Spectrom. Ion Proc., 1991, 103, 2-3, 107, https://doi.org/10.1016/0168-1176(91)80082-X . [all data]


Notes

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