Selected ATcT [1, 2] enthalpy of formation based on version 1.122p of the Thermochemical Network [3]

This version of ATcT results was generated from an expansion of version 1.122o [4] to include an updated enthalpy of formation for Hydrazine. [5].

Species Name Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass		 ATcT ID
Cyanogen bromide cation[BrCN]+ (g)Br[C+]#N1331.21324.9± 1.1kJ/mol105.9209 ±
0.0013		34749-77-4*0

Representative Geometry of [BrCN]+ (g)

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Top contributors to the provenance of ΔfH° of [BrCN]+ (g)

The 20 contributors listed below account only for 73.8% of the provenance of ΔfH° of [BrCN]+ (g).
A total of 31 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
6.22377.4 BrCN (g) + CH4 (g) → HCN (g) + CH3Br (g) ΔrH°(0 K) = -1.87 ± 1.0 kcal/molRuscic G4
5.42379.4 BrCN (g) + CH3Cl (g) → ClCN (g) + CH3Br (g) ΔrH°(0 K) = 0.16 ± 1.0 kcal/molRuscic G4
5.12377.3 BrCN (g) + CH4 (g) → HCN (g) + CH3Br (g) ΔrH°(0 K) = -2.27 ± 1.1 kcal/molRuscic G3X
5.02378.4 BrCN (g) + CH3F (g) → FCN (g) + CH3Br (g) ΔrH°(0 K) = 7.77 ± 1.0 kcal/molRuscic G4
4.72380.1 BrCN (g) → Br (g) + CN (g) ΔrH°(0 K) = 3.77 ± 0.05 eVDavis 1968
4.52379.3 BrCN (g) + CH3Cl (g) → ClCN (g) + CH3Br (g) ΔrH°(0 K) = -0.44 ± 1.1 kcal/molRuscic G3X
4.12378.3 BrCN (g) + CH3F (g) → FCN (g) + CH3Br (g) ΔrH°(0 K) = 6.80 ± 1.1 kcal/molRuscic G3X
3.52374.4 BrCN (g) + H2 (g) → HCN (g) + HBr (g) ΔrH°(0 K) = -18.98 ± 1.3 (×1.022) kcal/molRuscic G4
3.32382.9 BrCN (g) + HOCl (g) → ClCN (g) + HOBr (g) ΔrH°(0 K) = -8.3 ± 1.0 (×1.269) kcal/molLee 1995c
3.22381.1 BrCN (g) → Br+ (g) + CN (g) ΔrH°(0 K) = 15.568 ± 0.058 (×1.044) eVDibeler 1967b, AE corr, est unc
3.22376.4 BrCN (g) + HCl (g) → ClCN (g) + HBr (g) ΔrH°(0 K) = 2.62 ± 1.3 kcal/molRuscic G4
3.22374.3 BrCN (g) + H2 (g) → HCN (g) + HBr (g) ΔrH°(0 K) = -19.05 ± 1.4 kcal/molRuscic G3X
3.12382.4 BrCN (g) + HOCl (g) → ClCN (g) + HOBr (g) ΔrH°(0 K) = -7.86 ± 1.3 kcal/molRuscic G4
3.02375.4 BrCN (g) + HF (g) → FCN (g) + HBr (g) ΔrH°(0 K) = 17.15 ± 1.3 kcal/molRuscic G4
2.72376.3 BrCN (g) + HCl (g) → ClCN (g) + HBr (g) ΔrH°(0 K) = 2.62 ± 1.4 kcal/molRuscic G3X
2.72382.3 BrCN (g) + HOCl (g) → ClCN (g) + HOBr (g) ΔrH°(0 K) = -7.78 ± 1.4 kcal/molRuscic G3X
2.62399.2 ICN (g) → I (g) + CN (g) ΔrH°(0 K) = 26980 ± 200 cm-1Costen 1999, note unc2
2.52375.3 BrCN (g) + HF (g) → FCN (g) + HBr (g) ΔrH°(0 K) = 16.15 ± 1.4 kcal/molRuscic G3X
2.42371.2 BrCN (g) + H (g) → HCN (g) + Br (g) ΔrH°(0 K) = -36.54 ± 1.60 kcal/molRuscic G4
2.42398.2 ICN (g) + CH3Br (g) → BrCN (g) + CH3I (g) ΔrH°(0 K) = 2.43 ± 1.0 kcal/molRuscic unpub

Top 10 species with enthalpies of formation correlated to the ΔfH° of [BrCN]+ (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 Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass		 ATcT ID
99.9 Cyanogen bromideBrCN (g)BrC#N186.7180.1± 1.1kJ/mol105.9214 ±
0.0013		506-68-3*0
31.3 Isocyanogen bromideBrNC (g)BrN=[C]341.1335.4± 3.4kJ/mol105.9214 ±
0.0013		65997-98-0*0
26.1 Cyanogen bromide anion[BrCN]- (g)BrC#[N-]57.854.2± 3.8kJ/mol105.9220 ±
0.0013		54092-05-6*0
25.1 Cyanogen iodideICN (g)IC#N222.7222.1± 1.6kJ/mol152.92191 ±
0.00080		506-78-5*0
25.1 Cyanogen iodide cation[ICN]+ (g)I[C+]#N1271.51271.3± 1.6kJ/mol152.92136 ±
0.00080		34749-78-5*0
22.7 Isocyanogen bromide anion[BrNC]- (g)BrN=[C-]105.0101.8± 4.6kJ/mol105.9220 ±
0.0013		*238754-53-5*0
17.9 Isocyanogen bromide cation[BrNC]+ (g)BrN=[C+]1469.91464.1± 5.9kJ/mol105.9209 ±
0.0013		238754-53-5*0
16.5 Cyanogen chlorideClCN (g)ClC#N134.95135.65± 0.46kJ/mol61.4701 ±
0.0012		506-77-4*0
16.4 Cyanic fluorideFCN (g)FC#N8.789.11± 0.69kJ/mol45.01584 ±
0.00080		1495-50-7*0
10.5 Cyanic fluoride cation[FCN]+ (g)F[C+]#N1294.51294.9± 1.1kJ/mol45.01529 ±
0.00080		62532-69-8*0

Most Influential reactions involving [BrCN]+ (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
0.9892367.1 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 95675.5 ± 4.0 cm-1Li 2010b, note unc2
0.0092367.2 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.862 ± 0.005 eVEland 1996
0.0002367.5 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.85 ± 0.02 eVHeilbronner 1970
0.0002367.3 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.84 ± 0.01 (×2.229) eVDibeler 1967b
0.0002367.4 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.88 ± 0.05 eVLake 1970, est unc
0.0002367.9 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.835 ± 0.073 eVRuscic G4
0.0002367.8 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.854 ± 0.093 eVRuscic G3X
0.0002367.10 BrCN (g) → [BrCN]+ (g) ΔrH°(0 K) = 11.859 ± 0.099 eVRuscic CBS-n
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 21st 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. 1.122p of the Thermochemical Network (2020); available at ATcT.anl.gov
4   P. B. Changala, T. L. Nguyen, J. H. Baraban, G. B. Ellison, J. F. Stanton, D. H. Bross, and B. Ruscic,
Active Thermochemical Tables: The Adiabatic Ionization Energy of Hydrogen Peroxide.
J. Phys. Chem. A 121, 8799-8806 (2017) [DOI: 10.1021/acs.jpca.7b06221] (highlighted on the journal cover)
5   D. Feller, D. H. Bross, and B. Ruscic,
Enthalpy of Formation of N2H4 (Hydrazine) Revisited.
J. Phys. Chem. A 121, 6187-6198 (2017) [DOI: 10.1021/acs.jpca.7b06017]
6   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]
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 [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.