Silylidyne
- Formula: HSi
- Molecular weight: 29.0934
- IUPAC Standard InChI: InChI=1S/HSi/h1H
- IUPAC Standard InChIKey: QHGSGZLLHBKSAH-UHFFFAOYSA-N
- CAS Registry Number: 13774-94-2
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 376.66 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1976 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 198.04 | J/mol*K | Review | Chase, 1998 | Data 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1400. | 1400. to 6000. |
|---|---|---|
| A | 23.55128 | 37.78273 |
| B | 13.41432 | 0.245072 |
| C | -2.700940 | -0.009243 |
| D | -0.515586 | 0.020891 |
| E | 0.249938 | -4.759718 |
| F | 369.9087 | 356.3308 |
| G | 224.0766 | 233.3153 |
| H | 376.6625 | 376.6625 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1976 | Data last reviewed in December, 1976 |
Ion clustering 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
(H2Si- • 4294967295) +
= H2Si-
By formula: (H2Si- • 4294967295HSi) + HSi = H2Si-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 349. ± 9.6 | kJ/mol | N/A | Kasdan, Herbst, et al., 1975 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Ion clustering 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]
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, Ion clustering data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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