Formyl fluoride
- Formula: CHFO
- Molecular weight: 48.0164
- CAS Registry Number: 1493-02-3
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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 |
|---|---|---|---|---|---|
| ΔfH°gas | -376.56 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1961 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 246.52 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1961 |
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 1000. | 1000. to 6000. |
|---|---|---|
| A | 7.472875 | 72.96687 |
| B | 125.8033 | 5.631162 |
| C | -92.35008 | -1.135579 |
| D | 26.69384 | 0.078592 |
| E | 0.260592 | -9.843112 |
| F | -382.7431 | -422.0150 |
| G | 223.3892 | 301.7626 |
| H | -376.5604 | -376.5604 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1961 | Data last reviewed in June, 1961 |
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
CFO- + = CHFO
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1475. ± 19. | kJ/mol | EIAE | Karpas and Klein, 1977 | gas phase; From HCOF. G3MP2B3 calculations indicate an EA of ca. 2.3 eV, HOF(A-) 7 kcal/mol less stable. |
| ΔrH° | 1463. ± 14. | kJ/mol | Acid | Thynne and MacNeil, 1970 | gas phase; From CF2O |
+ CHFO = (
• CHFO)
By formula: F- + CHFO = (F- • CHFO)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | >75.73 | kJ/mol | IMRB | Karpas and Klein, 1977 | gas phase; FCO- + HCFO ->. Computations indicate HOF(A-) ca. -134, dHaff ca. 33 kcal/mol |
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]
Karpas and Klein, 1977
Karpas, Z.; Klein, F.S.,
The gas phase ion chemistry of carbonyl compounds: Formyl fluoride and a binary mixture of H2CO-F2CO or H2CO-Cl2CO,
Int. J. Mass Spectrom. Ion Phys., 1977, 24, 137. [all data]
Thynne and MacNeil, 1970
Thynne, J.C.J.; MacNeil, K.A.G.,
Ionisation and dissociation of carbonyl fluoride and trifluoromethyl hypofluorite by electron impact,
Intern. J. Mass Spectrom. Ion Phys., 1970, 5, 95. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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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