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
Phenylium[C6H5]+ (g)c1cccc[c+]11148.471136.57± 0.89kJ/mol77.1034 ±
0.0048		17333-73-2*0

Representative Geometry of [C6H5]+ (g)

spin ON           spin OFF
          

Top contributors to the provenance of ΔfH° of [C6H5]+ (g)

The 20 contributors listed below account only for 56.3% of the provenance of ΔfH° of [C6H5]+ (g).
A total of 62 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
4.63925.14 C6H5 (g) → [C6H5]+ (g) ΔrH°(0 K) = 8.261 ± 0.035 eVLau 2006
4.54023.2 C6H5I (g) → [C6H5]+ (g) + I (g) ΔrH°(0 K) = 11.178 ± 0.011 eVStevens 2009
4.53927.9 [C6H5]+ (g) → 6 C (g) + 5 H (g) ΔrH°(0 K) = 4198.8 ± 4 kJ/molLau 2006
4.03992.1 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 12.428 ± 0.040 eVStevens 2009
3.94041.1 C6H5NO (g) → [C6H5]+ (g) + NO (g) ΔrH°(0 K) = 10.607 ± 0.020 eVStevens 2010a
3.54031.1 C6H5I (cr,l) + HCl (g) → C6H6 (cr,l) + 1/2 I2 (cr,l) + 1/2 Cl2 (g) ΔrH°(298.15 K) = 7.13 ± 0.75 kcal/molChernick 1956, Hartley 1951
3.53925.12 C6H5 (g) → [C6H5]+ (g) ΔrH°(0 K) = 8.267 ± 0.040 eVRuscic W1RO
3.43992.5 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 286.7 ± 1 kcal/molPratt 1981
3.03938.3 [C6H6]+ (g) → [C6H5]+ (g) + H (g) ΔrH°(0 K) = 3.90 ± 0.05 eVTroe 2006
3.04018.1 C6H5Br (cr,l) + HCl (g) → C6H6 (cr,l) + 1/2 Br2 (cr,l) + 1/2 Cl2 (g) ΔrH°(298.15 K) = 19.98 ± 0.78 kcal/molChernick 1956, Hartley 1951
2.64039.2 C6H5NO (g) → C6H5 (g) + NO (g) ΔrG°(391 K) = 39.48 ± 0.5 kcal/molPark 1997, Yu 1994a, 3rd Law
2.53993.2 [C6H5Cl]+ (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 3.40 ± 0.05 eVRosenstock 1979
1.83927.8 [C6H5]+ (g) → 6 C (g) + 5 H (g) ΔrH°(0 K) = 1005.03 ± 1.50 kcal/molRuscic W1RO
1.63992.2 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 12.474 ± 0.062 eVStevens 2009
1.64028.1 2 C6H5I (cr,l) + 29/2 O2 (g) → 12 CO2 (g) + 5 H2O (cr,l) + I2 (cr,l) ΔrH°(298.15 K) = -1526.32 ± 2.0 (×1.164) kcal/molSmith 1956
1.63926.1 [C6H5]- (g) → C6H5 (g) ΔrH°(0 K) = 1.096 ± 0.006 eVGunion 1992
1.63929.7 [C6H5]- (g) → [C6H5]+ (g) ΔrH°(0 K) = 9.380 ± 0.065 eVRuscic W1RO
1.63927.4 [C6H5]+ (g) → 6 C (g) + 5 H (g) ΔrH°(0 K) = 1003.58 ± 1.60 kcal/molRuscic G4
1.44026.2 C6H5I (g) → C6H5 (g) + I (g) ΔrH°(0 K) = 66.7 ± 1.0 kcal/molKumaran 1997, est unc
1.44026.3 C6H5I (g) → C6H5 (g) + I (g) ΔrG°(1250 K) = 27.3 ± 1.0 kcal/molKumaran 1997, 3rd Law, est unc

Top 10 species with enthalpies of formation correlated to the ΔfH° of [C6H5]+ (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
100.0 Phenylium[C6H5]+ (g, singlet)c1cccc[c+]11148.471136.57± 0.89kJ/mol77.1034 ±
0.0048		17333-73-2*2
66.2 IodobenzeneC6H5I (g)c1ccc(cc1)I177.6161.6± 1.0kJ/mol204.0084 ±
0.0048		591-50-4*0
66.1 Iodobenzene cation[C6H5I]+ (g)c1ccc(cc1)[I+]1022.61007.1± 1.0kJ/mol204.0078 ±
0.0048		38406-85-8*0
60.3 IodobenzeneC6H5I (cr,l)c1ccc(cc1)I112.7112.8± 1.1kJ/mol204.0084 ±
0.0048		591-50-4*500
50.0 BromobenzeneC6H5Br (g)c1ccc(cc1)Br126.5104.5± 1.3kJ/mol157.0079 ±
0.0049		108-86-1*0
49.9 Bromobenzene cation[C6H5Br]+ (g)c1ccc(cc1)[Br+]994.7973.3± 1.3kJ/mol157.0074 ±
0.0049		55450-33-4*0
49.7 BromobenzeneC6H5Br (cr,l)c1ccc(cc1)Br59.8± 1.3kJ/mol157.0079 ±
0.0049		108-86-1*500
34.6 NitrosobenzeneC6H5NO (g)c1ccc(cc1)N=O215.4198.4± 1.5kJ/mol107.1100 ±
0.0048		586-96-9*0
28.3 PhenylC6H5 (g)c1cccc[c]1350.37337.08± 0.57kJ/mol77.1039 ±
0.0048		2396-01-2*0
20.2 Phenide[C6H5]- (g)c1cccc[c-]1244.70231.79± 0.43kJ/mol77.1044 ±
0.0048		30922-78-2*0

Most Influential reactions involving [C6H5]+ (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
1.0003945.1 [C6H5]+ (g, singlet) → [C6H5]+ (g) ΔrH°(0 K) = 0 ± 0 cm-1triv, Ruscic G3B3, Nicolaides 1997
0.5384023.2 C6H5I (g) → [C6H5]+ (g) + I (g) ΔrH°(0 K) = 11.178 ± 0.011 eVStevens 2009
0.5314041.1 C6H5NO (g) → [C6H5]+ (g) + NO (g) ΔrH°(0 K) = 10.607 ± 0.020 eVStevens 2010a
0.1434012.2 C6H5Br (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 11.827 ± 0.030 eVStevens 2009
0.1184012.1 C6H5Br (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 11.781 ± 0.029 (×1.139) eVStevens 2009
0.0894023.1 C6H5I (g) → [C6H5]+ (g) + I (g) ΔrH°(0 K) = 11.173 ± 0.027 eVStevens 2009
0.0723925.14 C6H5 (g) → [C6H5]+ (g) ΔrH°(0 K) = 8.261 ± 0.035 eVLau 2006
0.0643992.1 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 12.428 ± 0.040 eVStevens 2009
0.0574012.5 C6H5Br (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 273.5 ± 1 (×1.091) kcal/molPratt 1981
0.0553925.12 C6H5 (g) → [C6H5]+ (g) ΔrH°(0 K) = 8.267 ± 0.040 eVRuscic W1RO
0.0543992.5 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 286.7 ± 1 kcal/molPratt 1981
0.0503927.9 [C6H5]+ (g) → 6 C (g) + 5 H (g) ΔrH°(0 K) = 4198.8 ± 4 kJ/molLau 2006
0.0413993.2 [C6H5Cl]+ (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 3.40 ± 0.05 eVRosenstock 1979
0.0404013.1 [C6H5Br]+ (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 2.76 ± 0.02 (×2.828) eVRosenstock 1980, Baer 1982
0.0344023.5 C6H5I (g) → [C6H5]+ (g) + I (g) ΔrH°(0 K) = 257.1 ± 1 kcal/molPratt 1981
0.0323938.3 [C6H6]+ (g) → [C6H5]+ (g) + H (g) ΔrH°(0 K) = 3.90 ± 0.05 eVTroe 2006
0.0304012.7 C6H5Br (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 11.75 ± 0.05 (×1.297) eVSergeev 1970
0.0263992.2 C6H5Cl (g) → [C6H5]+ (g) + Cl (g) ΔrH°(0 K) = 12.474 ± 0.062 eVStevens 2009
0.0264013.2 [C6H5Br]+ (g) → [C6H5]+ (g) + Br (g) ΔrH°(0 K) = 2.81 ± 0.07 eVDunbar 1984
0.0203929.7 [C6H5]- (g) → [C6H5]+ (g) ΔrH°(0 K) = 9.380 ± 0.065 eVRuscic W1RO
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.