Trifluorosilane
- Formula: F3HSi
- Molecular weight: 86.0886
- IUPAC Standard InChI: InChI=1S/F3HSi/c1-4(2)3/h4H
- IUPAC Standard InChIKey: WPPVEXTUHHUEIV-UHFFFAOYSA-N
- CAS Registry Number: 13465-71-9
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, 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 | -287.000 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1976 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 66.267 | cal/mol*K | Review | Chase, 1998 | Data 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. to 1100. | 1100. to 6000. |
|---|---|---|
| A | 8.266172 | 24.93131 |
| B | 35.56781 | 0.492837 |
| C | -29.60069 | -0.098170 |
| D | 9.130550 | 0.006721 |
| E | -0.116910 | -2.126011 |
| F | -291.1950 | -299.8829 |
| G | 66.24271 | 88.60500 |
| H | -287.0000 | -287.0000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1976 | Data last reviewed in June, 1976 |
Vibrational and/or electronic energy levels
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: Takehiko Shimanouchi
Symmetry: C3ν Symmetry Number σ = 3
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | SiH str | 2316 | B | 2315.6 M | gas | ||||
| a1 | 2 | SiF3 s-str | 858 | B | 858.25 S | gas | ||||
| a1 | 3 | SiF3 s-deform | 425 | B | 425.2 M | gas | ||||
| e | 4 | SiF3 d-str | 998 | B | 997.83 VS | gas | ||||
| e | 5 | SiH bend | 844 | B | 843.6 S | gas | ||||
| e | 6 | SiF3 d-deform | 306 | B | 306.2 M | gas | ||||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| B | 1~3 cm-1 uncertainty |
References
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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