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Silane


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.

Quantity Value Units Method Reference Comment
Deltafgas8.200kcal/molReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
gas,1 bar48.913cal/mol*KReviewChase, 1998Data last reviewed in June, 1976

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1300.1300. - 6000.
A 1.44842023.86460
B 33.452011.016141
C -18.61490-0.193420
D 3.8816810.012772
E 0.032387-4.873339
F 6.546561-9.689331
G 41.6670963.76709
H 8.2000608.200060
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1976 Data last reviewed in June, 1976

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
Deltar373.9 ± 2.1kcal/molG+TSGal, Decouzon, et al., 2001gas phase
Deltar372.9 ± 2.1kcal/molG+TSWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar372.80 ± 0.84kcal/molD-EANimlos and Ellison, 1986gas phase
Deltar372.0 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar373.90kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7
Quantity Value Units Method Reference Comment
Deltar365.7 ± 2.0kcal/molIMREGal, Decouzon, et al., 2001gas phase
Deltar364.7 ± 2.0kcal/molIMREWetzel, Salomon, et al., 1989gas phase; value altered from reference due to change in acidity scale
Deltar364.58 ± 0.94kcal/molH-TSNimlos and Ellison, 1986gas phase
Deltar363.8 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar366.40kcal/molN/ACheck, Faust, et al., 2001gas phase; MnS-(t); ; «DELTA»S(EA)=5.7

Hydrogen anion + Silane = (Hydrogen anion bullet Silane)

By formula: H- + H4Si = (H- bullet H4Si)

Quantity Value Units Method Reference Comment
Deltar19.0 ± 4.0kcal/molIMRBHajdasz, Ho, et al., 1994gas phase
Deltar22.5 ± 4.5kcal/molIMREHajdasz and Squires, 1986gas phase; QCISD Calculation: H-A = 20.2, 99MOC
Quantity Value Units Method Reference Comment
Deltar11.6 ± 4.1kcal/molIMRBHajdasz, Ho, et al., 1994gas phase

References

Go To: Top, Gas phase thermochemistry 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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

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]

Hajdasz, Ho, et al., 1994
Hajdasz, D.J.; Ho, Y.; Squires, R.R., Gas-Phase Chemistry of Pentacoordinate Silicon Hydrides, J. Am. Chem. Soc., 1994, 116, 23, 10751, https://doi.org/10.1021/ja00102a045 . [all data]

Hajdasz and Squires, 1986
Hajdasz, D.J.; Squires, R.R., Hypervalent silicon hydrides: SiH5-, J. Am. Chem. Soc., 1986, 108, 3139. [all data]


Notes

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