Selected ATcT [1, 2] enthalpy of formation based on version 1.176 of the Thermochemical Network [3]

This version of ATcT results[3] was generated by additional expansion of version 1.172 to include species related to Criegee intermediates that are involved in several ongoing studies[4].

Trifluoromethyl

Formula: CF3 (g)

CAS RN: 2264-21-3

ATcT ID: 2264-21-3*0

SMILES: F[C](F)F

SMILES: [C](F)(F)F

InChI: InChI=1S/CF3/c2-1(3)4

InChIKey: WZKSXHQDXQKIQJ-UHFFFAOYSA-N

Hills Formula: C1F3

2D Image:

Aliases: CF3; Trifluoromethyl; Perfluoromethyl; Carbon trifluoride; Methyl trifluoride; Methyl perfluoride; F3C

Relative Molecular Mass: 69.00591 ± 0.00080

Δ_fH°(0 K)	Δ_fH°(298.15 K)	Uncertainty	Units
-465.15	-467.95	± 0.42	kJ/mol

3D Image of CF3 (g)

spin ON spin OFF

Top contributors to the provenance of Δ_fH° of CF3 (g)

The 20 contributors listed below account only for 57.0% of the provenance of Δ_fH° of CF3 (g).
A total of 146 contributors would be needed to account for 90% of the provenance.

Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. The Reference acts as a further link to the relevant references and notes for the measurement. The Measured Quantity is normaly given in the original units; in cases where we have reinterpreted the original measurement, the listed value may differ from that given by the authors. The quoted uncertainty is the a priori uncertainty used as input when constructing the initial Thermochemical Network, and corresponds either to the value proposed by the original authors or to our estimate; if an additional multiplier is given in parentheses immediately after the prior uncertainty, it corresponds to the factor by which the prior uncertainty needed to be multiplied during the ATcT analysis in order to make that particular measurement consistent with the prevailing knowledge contained in the Thermochemical Network.

Contribution (%)	TN ID	Reaction	Measured Quantity	Reference
6.5	6506.1	CF3 (g) → C (g) + 3/2 F2 (g)	Δ_rH°(0 K) = 1176.44 ± 1.6 kJ/mol	Csontos 2010
5.8	6501.11	CF3 (g) → C (g) + 3 F (g)	Δ_rH°(0 K) = 336.75 ± 0.4 kcal/mol	Feller 2008
5.7	6542.1	CF (g) → [CF]+ (g)	Δ_rH°(0 K) = 9.128 ± 0.006 eV	Jacovella 2023
4.7	6536.9	CF3 (g) → CF2 (g) + F (g)	Δ_rH°(0 K) = 348.56 ± 1.6 kJ/mol	Csontos 2010
4.1	6501.12	CF3 (g) → C (g) + 3 F (g)	Δ_rH°(0 K) = 1408.3 ± 2.0 kJ/mol	Ganyecz 2018, est unc
4.0	6575.9	CF3CF3 (g) → 2 C (g) + 6 F (g)	Δ_rH°(0 K) = 769.97 ± 0.45 kcal/mol	Karton 2017
3.7	6536.10	CF3 (g) → CF2 (g) + F (g)	Δ_rH°(0 K) = 348.5 ± 1.8 kJ/mol	Ganyecz 2018, est unc
3.4	6507.10	CF4 (g) → CF3 (g) + F (g)	Δ_rH°(0 K) = 540.42 ± 2.0 kJ/mol	Csontos 2010
2.8	6507.11	CF4 (g) → CF3 (g) + F (g)	Δ_rH°(0 K) = 540.3 ± 2.2 kJ/mol	Ganyecz 2018, est unc
2.3	6515.1	CHF3 (g) + Br (g) → CF3 (g) + HBr (g)	Δ_rH°(298.15 K) = 18.89 ± 0.5 kcal/mol	Syverud 1969, Arthur 1969, Amphlett 1968
1.6	6523.1	CHF3 (g) + H (g) → CF3 (g) + H2 (g)	Δ_rH°(298.15 K) = 2.09 ± 0.6 kcal/mol	Ruscic 1998, Hranisavljevic 1998a
1.5	6521.3	CF3Br (g) → CF3 (g) + Br (g)	Δ_rH°(298.15 K) = 70.8 ± 0.3 (×1.242) kcal/mol	Ruscic 1998, Hranisavljevic 1998, Asher 1997
1.5	6521.2	CF3Br (g) → CF3 (g) + Br (g)	Δ_rH°(298.15 K) = 70.8 ± 0.2 (×1.874) kcal/mol	Ruscic 1998, Skorobogatov 1996, Dymov 1991
1.4	6576.1	CF3CF3 (g) → 2 C (g) + 3 F2 (g)	Δ_rH°(0 K) = 2754.640 ± 3.2 kJ/mol	Nagy 2014
1.3	6522.2	CF3I (g) → CF3 (g) + I (g)	Δ_rH°(298.15 K) = 54.4 ± 0.4 kcal/mol	Skorobogatov 1991
1.3	6578.5	CF3CF3 (g) + 2 CH3 (g) → CH3CH3 (g) + 2 CF3 (g)	Δ_rH°(0 K) = 8.84 ± 0.9 kcal/mol	Ruscic W1RO
1.2	6514.1	CHF3 (g) + Cl (g) → CF3 (g) + HCl (g)	Δ_rH°(298.15 K) = 2.93 ± 0.7 kcal/mol	Syverud 1969, Coomber 1966, Arthur 1969, Amphlett 1966
1.1	6552.1	[CF3]+ (g) + CF (g) → CF3 (g) + [CF]+ (g)	Δ_rH°(0 K) = 0.055 ± 0.003 eV	Asher 1997
1.1	6580.9	CF2CF2 (g) → 2 C (g) + 4 F (g)	Δ_rH°(0 K) = 573.98 ± 0.50 kcal/mol	Karton 2017
1.0	6542.2	CF (g) → [CF]+ (g)	Δ_rH°(0 K) = 9.11 ± 0.01 (×1.384) eV	Dyke 1984a

Top 10 species with enthalpies of formation correlated to the Δ_fH° of CF3 (g)

Please note: The correlation coefficients are obtained by renormalizing the off-diagonal elements of the covariance matrix by the corresponding variances.
The correlation coefficient is a number from -1 to 1, with 1 representing perfectly correlated species, -1 representing perfectly anti-correlated species, and 0 representing perfectly uncorrelated species.

Correlation Coefficent (%)	Species Name	Formula	Δ_fH°(0 K)	Δ_fH°(298.15 K)	Uncertainty	Units	Relative Molecular Mass	ATcT ID
60.5	Trifluoromethylium	[CF3]+ (g)	409.80	406.59	± 0.40	kJ/mol	69.00536 ± 0.00080	18851-76-8*0
57.1	Bromotrifluoromethane	CF3Br (g)	-638.64	-650.76	± 0.39	kJ/mol	148.9099 ± 0.0013	75-63-8*0
51.2	Tetrafluoroethylene	CF2CF2 (g)	-670.68	-674.08	± 0.47	kJ/mol	100.0150 ± 0.0016	116-14-3*0
50.3	Iodotrifluoromethane	CF3I (g)	-583.20	-589.11	± 0.45	kJ/mol	195.91038 ± 0.00080	2314-97-8*0
49.4	Hexafluoroethane	CF3CF3 (g)	-1334.08	-1342.38	± 0.80	kJ/mol	138.0118 ± 0.0016	76-16-4*0
22.7	Fluoroform	CHF3 (g)	-689.30	-696.25	± 0.40	kJ/mol	70.01385 ± 0.00080	75-46-7*0
22.4	1,1-Difluoroethane	CH3CHF2 (g)	-489.02	-502.74	± 0.53	kJ/mol	66.0500 ± 0.0016	75-37-6*0
21.3	Fluoroform	CHF3 (l)		-704.71	± 0.42	kJ/mol	70.01385 ± 0.00080	75-46-7*590
18.8	Chlorotrifluoromethane	CF3Cl (g)	-704.27	-709.38	± 0.56	kJ/mol	104.4586 ± 0.0012	75-72-9*0
-35.9	Fluoromethyliumylidene	[CF]+ (g)	1123.47	1126.69	± 0.37	kJ/mol	31.00855 ± 0.00080	33412-11-2*0

Most Influential reactions involving CF3 (g)

Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.

Influence Coefficient	TN ID	Reaction	Measured Quantity	Reference
0.665	6552.1	[CF3]+ (g) + CF (g) → CF3 (g) + [CF]+ (g)	Δ_rH°(0 K) = 0.055 ± 0.003 eV	Asher 1997
0.422	6592.1	CF2CF2 (g) → CF3 (g) + [CF]+ (g)	Δ_rH°(0 K) = 13.777 ± 0.005 eV	Asher 1997
0.192	6503.10	[CF3]- (g) → CF3 (g)	Δ_rH°(0 K) = 1.77 ± 0.04 eV	Dixon 1999, note unc2
0.123	6503.1	[CF3]- (g) → CF3 (g)	Δ_rH°(0 K) = 1.82 ± 0.05 eV	Deyerl 2001
0.123	6503.9	[CF3]- (g) → CF3 (g)	Δ_rH°(0 K) = 1.755 ± 0.050 eV	Ruscic W1RO
0.115	1409.2	CF3I (g) + OH (g) → HOI (g) + CF3 (g)	Δ_rH°(320 K) = 22.6 ± 8.1 kJ/mol	Gilles 2000, Marshall 2008
0.093	6536.9	CF3 (g) → CF2 (g) + F (g)	Δ_rH°(0 K) = 348.56 ± 1.6 kJ/mol	Csontos 2010
0.091	6538.5	[CF2]+ (g) + CF3 (g) → [CF3]+ (g) + CF2 (g, singlet)	Δ_rH°(0 K) = -2.353 ± 0.025 eV	Ruscic W1RO
0.082	6503.5	[CF3]- (g) → CF3 (g)	Δ_rH°(0 K) = 1.765 ± 0.061 eV	Ruscic G4
0.074	6536.10	CF3 (g) → CF2 (g) + F (g)	Δ_rH°(0 K) = 348.5 ± 1.8 kJ/mol	Ganyecz 2018, est unc
0.066	6506.1	CF3 (g) → C (g) + 3/2 F2 (g)	Δ_rH°(0 K) = 1176.44 ± 1.6 kJ/mol	Csontos 2010
0.064	6522.2	CF3I (g) → CF3 (g) + I (g)	Δ_rH°(298.15 K) = 54.4 ± 0.4 kcal/mol	Skorobogatov 1991
0.063	6503.11	[CF3]- (g) → CF3 (g)	Δ_rH°(0 K) = 1.83 ± 0.07 eV	Ricca 1999, est unc
0.060	6501.11	CF3 (g) → C (g) + 3 F (g)	Δ_rH°(0 K) = 336.75 ± 0.4 kcal/mol	Feller 2008
0.059	6552.2	[CF3]+ (g) + CF (g) → CF3 (g) + [CF]+ (g)	Δ_rH°(0 K) = 0.06 ± 0.01 eV	Walter 1969
0.059	6515.1	CHF3 (g) + Br (g) → CF3 (g) + HBr (g)	Δ_rH°(298.15 K) = 18.89 ± 0.5 kcal/mol	Syverud 1969, Arthur 1969, Amphlett 1968
0.055	6521.3	CF3Br (g) → CF3 (g) + Br (g)	Δ_rH°(298.15 K) = 70.8 ± 0.3 (×1.242) kcal/mol	Ruscic 1998, Hranisavljevic 1998, Asher 1997
0.054	6521.2	CF3Br (g) → CF3 (g) + Br (g)	Δ_rH°(298.15 K) = 70.8 ± 0.2 (×1.874) kcal/mol	Ruscic 1998, Skorobogatov 1996, Dymov 1991
0.047	6578.5	CF3CF3 (g) + 2 CH3 (g) → CH3CH3 (g) + 2 CF3 (g)	Δ_rH°(0 K) = 8.84 ± 0.9 kcal/mol	Ruscic W1RO
0.047	6507.10	CF4 (g) → CF3 (g) + F (g)	Δ_rH°(0 K) = 540.42 ± 2.0 kJ/mol	Csontos 2010

References

1		B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner, Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited. J. Phys. Chem. A 108, 9979-9997 (2004) [DOI: 10.1021/jp047912y]
2		B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner, Active Thermochemical Tables: Thermochemistry for the 21^st Century. J. Phys. Conf. Ser. 16, 561-570 (2005) [DOI: 10.1088/1742-6596/16/1/078]
3		B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.176 of the Thermochemical Network (2024); available at ATcT.anl.gov
4		T. L. Nguyen et al, ongoing studies (2024)
5		B. Ruscic, Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables. Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]
6		B. Ruscic and D. H. Bross, Thermochemistry Computer Aided Chem. Eng. 45, 3-114 (2019) [DOI: 10.1016/B978-0-444-64087-1.00001-2]

Formula

The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.

Uncertainties

The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [5] and Ruscic and Bross[6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.000₅ kJ/mol.

Website Functionality Credits

The reorganization of the website was developed and implemented by David H. Bross (ANL).
The find function is based on the complete Species Dictionary entries for the appropriate version of the ATcT TN.
The molecule images are rendered by Indigo-depict.
The XYZ renderings are based on Jmol: an open-source Java viewer for chemical structures in 3D. http://www.jmol.org/.

Acknowledgement

This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences under Contract No. DE-AC02-06CH11357.