(Z)-Difluorodiazene
- Formula: F2N2
- Molecular weight: 66.0102
- IUPAC Standard InChI: InChI=1S/F2N2/c1-3-4-2/b4-3-
- IUPAC Standard InChIKey: DUQAODNTUBJRGF-ARJAWSKDSA-N
- CAS Registry Number: 13812-43-6
- 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. - Stereoisomers:
- Other names: Nitrogen fluoride (N2F2), (Z)-; cis-Difluorodiazene; cis-1,2-Difluorodiimide; Nitrogen fluoride, cis; FNNF
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Gas phase thermochemistry data
Go To: Top, Phase change data, 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 | 68.62 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1965 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 259.80 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1965 |
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 1200. | 1200. to 6000. |
|---|---|---|
| A | 26.68145 | 82.21058 |
| B | 119.7804 | 0.502758 |
| C | -98.63864 | -0.098790 |
| D | 29.15311 | 0.006682 |
| E | -0.397260 | -6.141777 |
| F | 54.81793 | 27.62971 |
| G | 258.2695 | 335.1258 |
| H | 68.61802 | 68.61802 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1965 | Data last reviewed in December, 1965 |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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.
Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 167.5 | K | N/A | Colburn, Johnson, et al., 1959 | Uncertainty assigned by TRC = 1. K |
| Quantity | Value | Units | Method | Reference | Comment |
| Tc | 272. | K | N/A | Colburn, Johnson, et al., 1959 | Uncertainty assigned by TRC = 3. K |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Phase change 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: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to F2N2+ (ion structure unspecified)
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| NF+ | 16.9 ± 0.2 | NF | EI | Herron and Dibeler, 1961 | |
| N2F+ | 14.0 ± 0.2 | F | EI | Herron and Dibeler, 1961 |
References
Go To: Top, Gas phase thermochemistry data, Phase change 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]
Colburn, Johnson, et al., 1959
Colburn, C.B.; Johnson, F.A.; Kennedy, A.; McCallum, K.; Metzger, L.C.; Parker, C.O.,
Difluorodiazene,
J. Am. Chem. Soc., 1959, 81, 6397. [all data]
Herron and Dibeler, 1961
Herron, J.T.; Dibeler, V.H.,
Mass spectrometric study of NF2, NF3, N2F2, and N2F4,
J. Res. NBS, 1961, 65A, 405. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) Tboil Boiling point Tc Critical temperature ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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