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

Silylidyne


Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, References, Notes

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
Deltafgas90.024kcal/molReviewChase, 1998Data last reviewed in December, 1976
Quantity Value Units Method Reference Comment
gas,1 bar47.333cal/mol*KReviewChase, 1998Data last reviewed in December, 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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 1400.1400. - 6000.
A 5.6288929.030290
B 3.2061000.058574
C -0.645540-0.002209
D -0.1232280.004993
E 0.059737-1.137600
F 88.4103085.16511
G 53.5555955.76370
H 90.0245090.02450
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1976 Data last reviewed in December, 1976

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry 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: 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

Si- + Hydrogen cation = Silylidyne

By formula: Si- + H+ = HSi

Quantity Value Units Method Reference Comment
Deltar353.1 ± 2.7kcal/molD-EABlondel, Chaibi, et al., 2005gas phase; (28)Si: 1.3895213(13) eV; revised analysis of Blondel, Delsart, et al., 2001
Quantity Value Units Method Reference Comment
Deltar347.9 ± 2.8kcal/molH-TSBlondel, Chaibi, et al., 2005gas phase; (28)Si: 1.3895213(13) eV; revised analysis of Blondel, Delsart, et al., 2001

(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

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]

Blondel, Chaibi, et al., 2005
Blondel, C.; Chaibi, W.; Delsart, C.; Drag, C.; Goldfarb, F.; Kroger, S., The electron affinities of O, Si, and S revisited with the photodetachment microscope, Eur. Phys. J. D, 2005, 33, 3, 335-342, https://doi.org/10.1140/epjd/e2005-00069-9 . [all data]

Blondel, Delsart, et al., 2001
Blondel, C.; Delsart, C.; Goldfarb, F., Electron spectrometry at the mu eV level and the electron affinities of Si and F, J. Phys. B: Atom. Mol. Opt. Phys., 2001, 34, 9, L281-L288, https://doi.org/10.1088/0953-4075/34/9/101 . [all data]

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

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References