silicon fluoride
- Formula: FSi
- Molecular weight: 47.0839
- IUPAC Standard InChI: InChI=1S/FSi/c1-2
- IUPAC Standard InChIKey: ZHPNWZCWUUJAJC-UHFFFAOYSA-N
- CAS Registry Number: 11128-24-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Silylidyne, fluoro-
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics 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 | -4.799 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1976 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 53.951 | cal/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 (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 6000. |
|---|---|
| A | 8.458571 |
| B | 0.515452 |
| C | -0.131606 |
| D | 0.013661 |
| E | -0.076078 |
| F | -7.598500 |
| G | 63.61150 |
| H | -4.799960 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1976 |
Gas phase ion energetics 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 as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to FSi+ (ion structure unspecified)
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 0.810 ± 0.020 | LPES | Kawamata, Neigishi, et al., 1996 | Vertical Detachment Energy: 0.81±0.05 eV.; B |
| >1.14009 | IMRB | Reents, Mandich, et al., 1986 | Si- + WF6 -> SiF- + WF5; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.54 ± 0.16 | END | Weber and Armentrout, 1988 | LL |
| 7.28 | EVAL | Huber and Herzberg, 1979 | LLK |
| 7.26 | S | Johns and Barrow, 1958 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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]
Kawamata, Neigishi, et al., 1996
Kawamata, H.; Neigishi, Y.; Kishi, R.; Iwata, S.; Nakajima, A.; Kaya, K.,
Photoelectron Spectroscopy of Silicon-Fluorine Binary Cluster Anions (SinFm-),
J. Chem. Phys., 1996, 105, 13, 5369, https://doi.org/10.1063/1.472377
. [all data]
Reents, Mandich, et al., 1986
Reents, W.D.; Mandich, M.L.; Bondebey, V.E.,
Reaction of Anionic and Cationic Silicon Clusters with Tungsten Hexafluoride Studied by Fourier Transform Mass Spectrometry,
Chem. Phys. Lett., 1986, 131, 1-2, 1, https://doi.org/10.1016/0009-2614(86)80507-3
. [all data]
Weber and Armentrout, 1988
Weber, M.E.; Armentrout, P.B.,
Energetics and dynamics in the reaction of Si+ with SiF4. Thermochemistry of SiFx and SiFx+ (x=1,2,3),
J. Chem. Phys., 1988, 11, 6898. [all data]
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]
Johns and Barrow, 1958
Johns, J.W.C.; Barrow, R.F.,
The band spectrum of silicon monofluoride, SiF,
Proc. Phys. Soc. (London), 1958, 71, 476. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity 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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