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

This version of ATcT results was partially described in Ruscic et al. [4], and was also used for the initial development of high-accuracy ANLn composite electronic structure methods [5].

Species Name Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass		 ATcT ID
Ethyl bromideCH3CH2Br (g)CCBr-41.14-63.09± 0.26kJ/mol108.9651 ±
0.0019		74-96-4*0

Representative Geometry of CH3CH2Br (g)

spin ON           spin OFF
          

Top contributors to the provenance of ΔfH° of CH3CH2Br (g)

The 20 contributors listed below account only for 66.7% of the provenance of ΔfH° of CH3CH2Br (g).
A total of 264 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
37.73738.1 C2H4 (g) + HBr (g) → CH3CH2Br (g) ΔrG°(546 K) = -8.340 ± 0.203 kJ/molLane 1953, 3rd Law
5.53739.2 CH3CH2Br (g) → [CH3CH2]+ (g) + Br (g) ΔrH°(0 K) = 11.130 ± 0.005 eVBaer 2000
2.8752.2 Br2 (cr,l) → Br2 (g) ΔrH°(298.15 K) = 7.386 ± 0.027 kcal/molHildenbrand 1958
2.11779.1 C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (cr,l) ΔrH°(298.15 K) = -1411.18 ± 0.30 kJ/molRossini 1937
2.13739.1 CH3CH2Br (g) → [CH3CH2]+ (g) + Br (g) ΔrH°(0 K) = 11.133 ± 0.008 eVBorkar 2010
1.9800.1 Cl2 (g) + 2 Br- (aq) → Br2 (cr,l) + 2 Cl- (aq) ΔrH°(298.15 K) = -91.29 ± 0.40 (×2.768) kJ/molJohnson 1963, as quoted by CODATA Key Vals
1.9800.2 Cl2 (g) + 2 Br- (aq) → Br2 (cr,l) + 2 Cl- (aq) ΔrH°(298.15 K) = -91.29 ± 0.80 (×1.384) kJ/molSunner 1964, as quoted by CODATA Key Vals
1.7803.1 [HBr]+ (g) → H (g) + Br+ (g) ΔrH°(0 K) = 31394.5 ± 20 (×2.229) cm-1Haugh 1971, Norling 1935
1.31722.1 C2H6 (g) + 7/2 O2 (g) → 2 CO2 (g) + 3 H2O (cr,l) ΔrH°(298.15 K) = -1560.68 ± 0.25 kJ/molPittam 1972
1.2117.2 1/2 O2 (g) + H2 (g) → H2O (cr,l) ΔrH°(298.15 K) = -285.8261 ± 0.040 kJ/molRossini 1939, Rossini 1931, Rossini 1931b, note H2Oa, Rossini 1930
1.11741.1 CH3CH2 (g) → [CH3CH2]+ (g) ΔrH°(0 K) = 8.117 ± 0.008 (×1.215) eVRuscic 1989b
1.11741.14 CH3CH2 (g) → [CH3CH2]+ (g) ΔrH°(0 K) = 8.124 ± 0.010 eVLau 2005
0.9780.1 1/2 H2 (g) + 1/2 Br2 (cr,l) → HBr (aq) ΔrG°(298.15 K) = -102.81 ± 0.80 kJ/molJones 1934, as quoted by CODATA Key Vals
0.81759.1 [CH3CH2]+ (g) + H2O (g) → [H3O]+ (g) + C2H4 (g) ΔrG°(298.15 K) = -1.8 ± 0.2 kcal/molBohme 1981, 3rd Law
0.7778.1 1/2 H2 (g) + 1/2 Br2 (g) → HBr (g) ΔrH°(376.15 K) = -12.470 ± 0.170 (×1.139) kcal/molLacher 1956a, Lacher 1956
0.6771.12 HBr (g) → H (g) + Br (g) ΔrH°(0 K) = 86.47 ± 0.2 kcal/molFeller 2008
0.6772.6 HBr (g) + Cl (g) → HCl (g) + Br (g) ΔrH°(0 K) = -15.68 ± 0.2 kcal/molFeller 2008
0.6887.1 HI (g) + Br (g) → HBr (g) + I (g) ΔrH°(0 K) = -16.14 ± 0.2 kcal/molFeller 2008
0.61642.1 2 H2 (g) + C (graphite) → CH4 (g) ΔrG°(1165 K) = 37.521 ± 0.068 kJ/molSmith 1946, note COf, 3rd Law
0.5800.3 Cl2 (g) + 2 Br- (aq) → Br2 (cr,l) + 2 Cl- (aq) ΔrH°(298.15 K) = -91.55 ± 2.00 kJ/molThomsen 1882, as quoted by CODATA Key Vals

Top 10 species with enthalpies of formation correlated to the ΔfH° of CH3CH2Br (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
95.8 Ethyl bromideCH3CH2Br (l)CCBr-55.54-91.07± 0.27kJ/mol108.9651 ±
0.0019		74-96-4*500
51.4 Hydrogen bromideHBr (g)Br-27.81-35.66± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*0
51.3 Bromoniumyl[HBr]+ (g)[BrH+]1097.861090.01± 0.16kJ/mol80.9114 ±
0.0010		12258-64-9*0
48.9 Hydrogen bromideHBr (aq, 2570 H2O)Br-120.55± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*952
48.8 Hydrogen bromideHBr (aq, 3000 H2O)Br-120.56± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*842
48.8 Hydrogen bromideHBr (aq, 2000 H2O)Br-120.51± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*841
48.8 Hydrogen bromideHBr (aq)Br-120.80± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*800
48.8 BromideBr- (aq)[Br-]-120.80± 0.16kJ/mol79.90455 ±
0.00100		24959-67-9*800
48.8 Hydrogen bromideHBr (aq, 1000 H2O)Br-120.41± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*839
48.8 Hydrogen bromideHBr (aq, 5000 H2O)Br-120.61± 0.16kJ/mol80.9119 ±
0.0010		10035-10-6*844

Most Influential reactions involving CH3CH2Br (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
0.8693738.1 C2H4 (g) + HBr (g) → CH3CH2Br (g) ΔrG°(546 K) = -8.340 ± 0.203 kJ/molLane 1953, 3rd Law
0.5003740.9 CH3CH2Br (l) → CH3CH2Br (g) ΔrG°(298.236 K) = 1.263 ± 0.109 kJ/molThermoData 2004, 3rd Law
0.3993739.2 CH3CH2Br (g) → [CH3CH2]+ (g) + Br (g) ΔrH°(0 K) = 11.130 ± 0.005 eVBaer 2000
0.1563739.1 CH3CH2Br (g) → [CH3CH2]+ (g) + Br (g) ΔrH°(0 K) = 11.133 ± 0.008 eVBorkar 2010
0.1483740.5 CH3CH2Br (l) → CH3CH2Br (g) ΔrH°(311.9 K) = 27.29 ± 0.20 kJ/molSvoboda 1977, Majer 1985, est unc
0.1483740.4 CH3CH2Br (l) → CH3CH2Br (g) ΔrH°(304.6 K) = 27.77 ± 0.20 kJ/molSvoboda 1977, Majer 1985, est unc
0.1353740.7 CH3CH2Br (l) → CH3CH2Br (g) ΔrH°(305.99 K) = 6.632 ± 0.05 kcal/molde Kolossowsky 1934, ThermoData 2004, est unc
0.0423740.6 CH3CH2Br (l) → CH3CH2Br (g) ΔrH°(322.7 K) = 26.54 ± 0.20 (×1.874) kJ/molSvoboda 1977, Majer 1985, est unc
0.0253739.3 CH3CH2Br (g) → [CH3CH2]+ (g) + Br (g) ΔrH°(0 K) = 11.14 ± 0.02 eVTraeger 1981, AE corr, note unc2
0.0173740.3 CH3CH2Br (l) → CH3CH2Br (g) ΔrH°(298.15 K) = 27.88 ± 0.59 kJ/molThermoData 2004
0.0103733.3 CH3CH2Br (g) + CH3F (g) → CH3CH2F (g) + CH3Br (g) ΔrH°(0 K) = -1.80 ± 1.1 kcal/molRuscic G3X
0.0083733.1 CH3CH2Br (g) + CH3F (g) → CH3CH2F (g) + CH3Br (g) ΔrH°(0 K) = -1.80 ± 1.2 kcal/molRuscic G3B3
0.0083733.2 CH3CH2Br (g) + CH3F (g) → CH3CH2F (g) + CH3Br (g) ΔrH°(0 K) = -1.83 ± 1.2 kcal/molRuscic G3
0.0063737.1 CH3CH2Br (g) + H2 (g) → C2H6 (g) + HBr (g) ΔrH°(523.15 K) = -14.832 ± 0.372 (×1.719) kcal/molFowell 1965
0.0043731.3 CH3CH2Br (g) + CH4 (g) → CH3Br (g) + C2H6 (g) ΔrH°(0 K) = 5.01 ± 1.1 kcal/molRuscic G3X
0.0043734.3 CH3CH2Br (g) + HF (g) → CH3CH2F (g) + HBr (g) ΔrH°(0 K) = 7.54 ± 1.4 kcal/molRuscic G3X
0.0043734.2 CH3CH2Br (g) + HF (g) → CH3CH2F (g) + HBr (g) ΔrH°(0 K) = 7.41 ± 1.5 kcal/molRuscic G3
0.0043734.1 CH3CH2Br (g) + HF (g) → CH3CH2F (g) + HBr (g) ΔrH°(0 K) = 7.38 ± 1.5 kcal/molRuscic G3B3
0.0043731.1 CH3CH2Br (g) + CH4 (g) → CH3Br (g) + C2H6 (g) ΔrH°(0 K) = 4.91 ± 1.2 kcal/molRuscic G3B3
0.0043731.2 CH3CH2Br (g) + CH4 (g) → CH3Br (g) + C2H6 (g) ΔrH°(0 K) = 4.96 ± 1.2 kcal/molRuscic G3
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. 1.122 of the Thermochemical Network (2016); available at ATcT.anl.gov
4   B. Ruscic,
Active Thermochemical Tables: Sequential Bond Dissociation Enthalpies of Methane, Ethane, and Methanol and the Related Thermochemistry.
J. Phys. Chem. A 119, 7810-7837 (2015) [DOI: 10.1021/acs.jpca.5b01346]
5   S. J. Klippenstein, L. B. Harding, and B. Ruscic,
Ab initio Computations and Active Thermochemical Tables Hand in Hand: Heats of Formation of Core Combustion Species.
J. Phys. Chem. A 121, 6580-6602 (2017) [DOI: 10.1021/acs.jpca.7b05945]
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.