Selected ATcT [1, 2] enthalpy of formation based on version 1.122r of the Thermochemical Network [3] This version of ATcT results was generated from an expansion of version 1.122q [4, 5] to include a non-rigid rotor anharmonic oscillator (NRRAO) partition function for hydroxymethyl [6], as well as data on 42 additional species, some of which are related to soot formation mechanisms.
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Species Name |
Formula |
Image |
ΔfH°(0 K) |
ΔfH°(298.15 K) |
Uncertainty |
Units |
Relative Molecular Mass |
ATcT ID |
Bromobenzene | C6H5Br (g) | | 126.7 | 104.6 | ± 1.3 | kJ/mol | 157.0079 ± 0.0049 | 108-86-1*0 |
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Representative Geometry of C6H5Br (g) |
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spin ON spin OFF |
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Top contributors to the provenance of ΔfH° of C6H5Br (g)The 9 contributors listed below account for 67.7% of the provenance of ΔfH° of C6H5Br (g).
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.
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Top 10 species with enthalpies of formation correlated to the ΔfH° of C6H5Br (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.
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Correlation Coefficent (%) | Species Name | Formula | Image | ΔfH°(0 K) | ΔfH°(298.15 K) | Uncertainty | Units | Relative Molecular Mass | ATcT ID | 99.8 | Bromobenzene cation | [C6H5Br]+ (g) | | 994.8 | 973.3 | ± 1.3 | kJ/mol | 157.0074 ± 0.0049 | 55450-33-4*0 | 99.1 | Bromobenzene | C6H5Br (cr,l) | | | 59.9 | ± 1.3 | kJ/mol | 157.0079 ± 0.0049 | 108-86-1*500 | 45.0 | Phenylium | [C6H5]+ (g) | | 1148.55 | 1135.77 | ± 0.85 | kJ/mol | 77.1034 ± 0.0048 | 17333-73-2*0 | 45.0 | Phenylium | [C6H5]+ (g, singlet) | | 1148.55 | 1135.77 | ± 0.85 | kJ/mol | 77.1034 ± 0.0048 | 17333-73-2*2 | 39.2 | Iodobenzene | C6H5I (cr,l) | | 112.9 | 113.0 | ± 1.1 | kJ/mol | 204.0084 ± 0.0048 | 591-50-4*500 | 39.0 | Iodobenzene | C6H5I (g) | | 177.82 | 161.83 | ± 0.99 | kJ/mol | 204.0084 ± 0.0048 | 591-50-4*0 | 39.0 | Iodobenzene cation | [C6H5I]+ (g) | | 1022.82 | 1007.38 | ± 0.99 | kJ/mol | 204.0078 ± 0.0048 | 38406-85-8*0 | 16.9 | Phenylium | [C6H5]+ (g, triplet) | | 1250.8 | 1237.7 | ± 1.6 | kJ/mol | 77.1034 ± 0.0048 | 17333-73-2*1 | 16.7 | Nitrosobenzene | C6H5NO (g) | | 215.9 | 199.0 | ± 1.2 | kJ/mol | 107.1100 ± 0.0048 | 586-96-9*0 | 13.3 | Phenyl | C6H5 (g) | | 350.67 | 337.31 | ± 0.51 | kJ/mol | 77.1039 ± 0.0048 | 2396-01-2*0 |
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Most Influential reactions involving C6H5Br (g)Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.
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Influence Coefficient | TN ID | Reaction | Measured Quantity | Reference | 0.979 | 5493.1 | C6H5Br (g) → [C6H5Br]+ (g)  | ΔrH°(0 K) = 72570 ± 5 cm-1 | Kwon 2002 | 0.587 | 5508.1 | C6H5Br (cr,l) → C6H5Br (g)  | ΔrH°(298.15 K) = 44.54 ± 0.22 kJ/mol | Majer 1985, Wadso 1968 | 0.315 | 5508.3 | C6H5Br (cr,l) → C6H5Br (g)  | ΔrH°(298.15 K) = 44.84 ± 0.30 kJ/mol | Basarova 1991, Boublik 1984 | 0.166 | 5505.2 | C6H5Br (g) → [C6H5]+ (g) + Br (g)  | ΔrH°(0 K) = 11.827 ± 0.030 eV | Stevens 2009 | 0.143 | 5505.1 | C6H5Br (g) → [C6H5]+ (g) + Br (g)  | ΔrH°(0 K) = 11.781 ± 0.029 (×1.114) eV | Stevens 2009 | 0.090 | 5508.2 | C6H5Br (cr,l) → C6H5Br (g)  | ΔrH°(298.15 K) = 44.79 ± 0.56 kJ/mol | ThermoData 2004 | 0.081 | 5504.1 | C6H5Cl (g) + Br (g) → C6H5Br (g) + Cl (g)  | ΔrH°(0 K) = 0.647 ± 0.049 eV | Stevens 2009 | 0.064 | 5505.5 | C6H5Br (g) → [C6H5]+ (g) + Br (g)  | ΔrH°(0 K) = 273.5 ± 1 (×1.114) kcal/mol | Pratt 1981 | 0.041 | 5504.2 | C6H5Cl (g) + Br (g) → C6H5Br (g) + Cl (g)  | ΔrH°(0 K) = 0.647 ± 0.069 eV | Stevens 2009 | 0.037 | 5492.4 | C6H5Br (g) → 6 C (g) + 5 H (g) + Br (g)  | ΔrH°(0 K) = 1276.98 ± 1.60 kcal/mol | Ruscic G4 | 0.037 | 5505.7 | C6H5Br (g) → [C6H5]+ (g) + Br (g)  | ΔrH°(0 K) = 11.75 ± 0.05 (×1.269) eV | Sergeev 1970 | 0.032 | 5492.3 | C6H5Br (g) → 6 C (g) + 5 H (g) + Br (g)  | ΔrH°(0 K) = 1277.62 ± 1.72 kcal/mol | Ruscic G3X | 0.021 | 5505.6 | C6H5Br (g) → [C6H5]+ (g) + Br (g)  | ΔrH°(0 K) = 11.73 ± 0.05 (×1.682) eV | Malinovich 1985 | 0.009 | 5493.2 | C6H5Br (g) → [C6H5Br]+ (g)  | ΔrH°(0 K) = 8.991 ± 0.002 (×3.221) eV | Holland 2000 | 0.004 | 5507.3 | C6H5Br (g) → C6H5 (g) + Br (g)  | ΔrH°(1080 K) = 78.1 ± 5 kcal/mol | Rodgers 1967, Ladacki 1953, est unc | 0.003 | 5271.1 | C6H5Br (g) → C6H4 (g) + Br- (g) + H+ (g)  | ΔrH°(298.15 K) = 397 ± 6 kcal/mol | Wenthold 1994, note unc2 | 0.001 | 5532.1 | C6H5Br (g) + [C6H5F]+ (g) → [C6H5Br]+ (g) + C6H5F (g)  | ΔrH°(350 K) = -4.95 ± 0.5 kcal/mol | Lias 1978, 2nd Law, est unc | 0.000 | 5493.4 | C6H5Br (g) → [C6H5Br]+ (g)  | ΔrH°(0 K) = 8.98 ± 0.02 eV | Walter 1991 | 0.000 | 5493.3 | C6H5Br (g) → [C6H5Br]+ (g)  | ΔrH°(0 K) = 8.998 ± 0.02 eV | Potts 1980a, est unc, von Niessen 1982 | 0.000 | 5493.6 | C6H5Br (g) → [C6H5Br]+ (g)  | ΔrH°(0 K) = 8.99 ± 0.02 eV | Klasinc 1983, est unc |
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References
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1
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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]
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2
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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]
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3
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B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.122r of the Thermochemical Network, Argonne National Laboratory, Lemont, Illinois 2021 [DOI: 10.17038/CSE/1822363]; available at ATcT.anl.gov
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4
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D. Feller, D. H. Bross, and B. Ruscic,
Enthalpy of Formation of C2H2O4 (Oxalic Acid) from High-Level Calculations and the Active Thermochemical Tables Approach.
J. Phys. Chem. A 123, 3481-3496 (2019)
[DOI: 10.1021/acs.jpca.8b12329]
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5
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B. K. Welch, R. Dawes, D. H. Bross, and B. Ruscic,
An Automated Thermochemistry Protocol Based on Explicitly Correlated Coupled-Cluster Theory: The Methyl and Ethyl Peroxy Families.
J. Phys. Chem. A 123, 5673-5682 (2019)
[DOI: 10.1021/acs.jpca.8b12329]
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6
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D. H. Bross, H.-G. Yu, L. B. Harding, and B. Ruscic,
Active Thermochemical Tables: The Partition Function of Hydroxymethyl (CH2OH) Revisited.
J. Phys. Chem. A 123, 4212-4231 (2019)
[DOI: 10.1021/acs.jpca.9b02295]
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7
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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]
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