Benzene
- Formula: C6H6
- Molecular weight: 78.1118
- IUPAC Standard InChIKey: UHOVQNZJYSORNB-UHFFFAOYSA-N
- CAS Registry Number: 71-43-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: [6]Annulene; Benzol; Benzole; Coal naphtha; Cyclohexatriene; Phenyl hydride; Pyrobenzol; Pyrobenzole; Benzolene; Bicarburet of hydrogen; Carbon oil; Mineral naphtha; Motor benzol; Benzeen; Benzen; Benzin; Benzine; Benzolo; Fenzen; NCI-C55276; Phene; Rcra waste number U019; UN 1114; NSC 67315; 1,3,5-Cyclohexatriene
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Condensed phase thermochemistry data
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | 49. ± 0.9 | kJ/mol | Review | Roux, Temprado, et al., 2008 | There are sufficient high-quality literature values to make a good evaluation with a high degree of confidence. In general, the evaluated uncertainty limits are on the order of (0.5 to 2.5) kJ/mol.; DRB |
ΔfH°liquid | 48.95 ± 0.54 | kJ/mol | Ccb | Good and Smith, 1969 | ALS |
ΔfH°liquid | 49.04 ± 0.50 | kJ/mol | Ccb | Prosen, Gilmont, et al., 1945 | Hf by Prosen, Johnson, et al., 1946; ALS |
ΔfH°liquid | 46.0 | kJ/mol | Ccb | Landrieu, Baylocq, et al., 1929 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -3267. ± 20. | kJ/mol | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 173.26 | J/mol*K | N/A | Oliver, Eaton, et al., 1948 | DH |
S°liquid | 175.3 | J/mol*K | N/A | Huffman, Parks, et al., 1930 | Extrapolation below 90 K, 47.49 J/mol*K.; DH |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 45.56 | J/mol*K | N/A | Ahlberg, Blanchard, et al., 1937 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
135.69 | 298.15 | Grolier, Roux-Desgranges, et al., 1993 | DH |
135.9 | 298.5 | Czarnota, 1991 | p = 0.1 MPa. Cp values given for the pressure range 0.1 to 68.1 MPa.; DH |
135.62 | 298.15 | Lainez, Rodrigo, et al., 1989 | DH |
134.63 | 298.15 | Shiohama, Ogawa, et al., 1988 | DH |
135.75 | 298.15 | Grolier, Roux-Desgranges, et al., 1987 | DH |
134.61 | 293.15 | Kalali, Kohler, et al., 1987 | T = 293.15, 313.15 K.; DH |
135.707 | 298.15 | Tanaka, 1987 | DH |
139.9 | 322.05 | Naziev, Bashirov, et al., 1986 | T = 322.05, 351.15 K. p = 0.1 MPa. Unsmoothed experimental datum given as 1.7915 kJ/kg*K.; DH |
137.4 | 303.15 | Reddy, 1986 | T = 303.15, 313.15 K.; DH |
136.06 | 298.15 | Ogawa and Murakami, 1985 | DH |
135.718 | 298.15 | Tanaka, 1985 | DH |
136.24 | 298.15 | Gorbunova, Simonov, et al., 1983 | T = 283.78 to 348.47 K. Cp = 1.3943 - 5.857x10-4T + 5.89x10-6T2 kJ/kg*K. Cp value calculated from equation.; DH |
136.5 | 300. | Gorbunova, Grigoriev, et al., 1982 | T = 280 to 353 K. Data also given by equation.; DH |
135.7 | 298.15 | Grolier, Inglese, et al., 1982 | T = 298.15 K.; DH |
135.74 | 298.15 | Tanaka, 1982 | Temperatures 293.15, 298.15, 303.15 K.; DH |
135.60 | 298.15 | Wilhelm, Faradjzadeh, et al., 1982 | DH |
133.6 | 293.15 | Atalla, El-Sharkawy, et al., 1981 | DH |
135.90 | 298.15 | Vesely, Zabransky, et al., 1979 | DH |
135.61 | 298.15 | Grolier, Wilhelm, et al., 1978 | DH |
135.90 | 298.15 | Vesely, Svoboda, et al., 1977 | T = 298 to 318 K.; DH |
135.60 | 298.15 | Wilhelm, Grolier, et al., 1977 | DH |
135.76 | 298.15 | Fortier, Benson, et al., 1976 | DH |
135.760 | 298.15 | Fortier and Benson, 1976 | DH |
135.7 | 298.15 | Rajagopal and Subrahmanyam, 1974 | T = 298.15 to 323.15 K.; DH |
134.3 | 298. | Deshpande and Bhatagadde, 1971 | T = 298 to 318 K.; DH |
135.9 | 298.15 | Hyder Khan and Subrahmanyam, 1971 | T = 298; 313 K.; DH |
135.9 | 298. | Subrahmanyam and Khan, 1969 | DH |
135.4 | 298. | Recko, 1968 | T = 24 to 40°C, equation only.; DH |
130. | 298. | Pacor, 1967 | DH |
134.6 | 293. | Rastorguev and Ganiev, 1967 | T = 293 to 353 K.; DH |
135.30 | 300. | Findenegg, Gruber, et al., 1965 | DH |
134.98 | 298. | Rabinovich and Nikolaev, 1962 | T = 10 to 35°C.; DH |
135.1 | 316. | Swietoslawski and Zielenkiewicz, 1960 | Mean value 21 to 66°C.; DH |
136.4 | 303. | Duff and Everett, 1956 | T = 303 to 353 K.; DH |
135.23 | 298. | Staveley, Tupman, et al., 1955 | T = 288 to 347 K.; DH |
31.8 | 293. | Sieg, Crtzen, et al., 1951 | DH |
136.06 | 298.15 | Oliver, Eaton, et al., 1948 | T = 13 to 337 K.; DH |
119. | 295. | Tschamler, 1948 | DH |
133.5 | 298. | Kurbatov, 1947 | T = 9 to 80°C, mean Cp, five temperatures.; DH |
136.0 | 298.1 | Zhdanov, 1941 | T = 8 to 46°C.; DH |
135.44 | 298.2 | Burlew, 1940 | T = 281 to 353 K.; DH |
131.4 | 287.8 | Kolosovskii and Udovenko, 1934 | DH |
131.4 | 287.8 | de Kolossowsky and Udowenko, 1933 | DH |
131.4 | 298.15 | Ferguson and Miller, 1933 | T = 293 to 323 K. Data calculated from equation.; DH |
135.1 | 298.1 | Richards and Wallace, 1932 | T = 293 to 333 K.; DH |
143.57 | 323.15 | Fiock, Ginnings, et al., 1931 | T = 50 to 110°C.; DH |
135.1 | 300.0 | Huffman, Parks, et al., 1930 | T = 93 to 300 K. Value is unsmoothed experimental datum.; DH |
132.2 | 298. | Andrews, Lynn, et al., 1926 | T = -18 to 110°C.; DH |
133.1 | 293.2 | Williams and Daniels, 1925 | T = 20 to 60°C.; DH |
133.9 | 303. | Willams and Daniels, 1924 | T = 303 to 333 K. Equation only.; DH |
137.2 | 298. | Dejardin, 1919 | T = 24 to 50°C.; DH |
133.5 | 298. | von Reis, 1881 | T = 292 to 364 K.; DH |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
47.86 | 90. | Ahlberg, Blanchard, et al., 1937 | T = 4 to 93 K.; DH |
97.9 | 223.9 | Aoyama and Kanda, 1935 | T = 82 to 224 K. Value is unsmoothed experimental datum.; DH |
118.4 | 273. | Maass and Walbauer, 1925 | T = 93 to 273 K.; DH |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Reactions 1 to 50
By formula: Cl- + C6H6 = (Cl- • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 25.1 ± 1.9 | kJ/mol | N/A | Tschurl, Ueberfluss, et al., 2007 | gas phase; B |
ΔrH° | 39. ± 8.4 | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B,M |
ΔrH° | 41.4 | kJ/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
ΔrH° | 36. | kJ/mol | PHPMS | Paul and Kebarle, 1991 | gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M |
ΔrH° | 43.5 | kJ/mol | PHPMS | Sunner, Nishizawa, et al., 1981 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, Mizuse, et al., 1988 | gas phase; M |
ΔrS° | 71. | J/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M |
ΔrS° | 71.5 | J/mol*K | N/A | Larson and McMahon, 1984, 2 | gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M |
ΔrS° | 92. | J/mol*K | N/A | Sunner, Nishizawa, et al., 1981 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 17. ± 11. | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B |
ΔrG° | 16. ± 6.7 | kJ/mol | IMRE | Chowdhury and Kebarle, 1986 | gas phase; B |
ΔrG° | 20. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
ΔrG° | 15.9 | kJ/mol | IMRE | French, Ikuta, et al., 1982 | gas phase; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
15. | 300. | PHPMS | Paul and Kebarle, 1991 | gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M |
16. | 300. | PHPMS | Chowdhury and Kebarle, 1986 | gas phase; M |
16. | 300. | PHPMS | Sunner, Nishizawa, et al., 1981 | gas phase; Entropy change calculated or estimated; M |
C6H5- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1678.7 ± 2.1 | kJ/mol | G+TS | Davico, Bierbaum, et al., 1995 | gas phase; Revised per Ervin and DeTuro, 2002 change in NH3 acidity. Alecu, Gao, et al., 2007 using thermal methods, agrees with this BDE: 112.8±0.6; value altered from reference due to change in acidity scale; B |
ΔrH° | 1678.5 ± 0.88 | kJ/mol | D-EA | Gunion, Gilles, et al., 1992 | gas phase; B |
ΔrH° | 1677. ± 10. | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; B |
ΔrH° | 1680. ± 42. | kJ/mol | CIDT | Graul and Squires, 1990 | gas phase; B |
ΔrH° | 1665. ± 23. | kJ/mol | G+TS | Bohme and Young, 1971 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1641.8 ± 1.7 | kJ/mol | IMRE | Davico, Bierbaum, et al., 1995 | gas phase; Revised per Ervin and DeTuro, 2002 change in NH3 acidity. Alecu, Gao, et al., 2007 using thermal methods, agrees with this BDE: 112.8±0.6; value altered from reference due to change in acidity scale; B |
ΔrG° | 1636. ± 8.4 | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; B |
ΔrG° | 1632. ± 27. | kJ/mol | IMRB | Bartmess and McIver Jr., 1979 | gas phase; B |
ΔrG° | 1628. ± 23. | kJ/mol | IMRB | Bohme and Young, 1971 | gas phase; B |
By formula: C6H6+ + C6H6 = (C6H6+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 60. ± 30. | kJ/mol | AVG | N/A | Average of 7 out of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 120. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1991 | gas phase; M |
ΔrS° | 110. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
ΔrS° | 96. | J/mol*K | HPMS | Field, Hamlet, et al., 1969 | gas phase; M |
By formula: Li+ + C6H6 = (Li+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 161. ± 13. | kJ/mol | CIDT | Amicangelo and Armentrout, 2000 | RCD |
ΔrH° | 159. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M |
ΔrH° | 153. | kJ/mol | ICR | Staley and Beauchamp, 1975 | gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 115. | J/mol*K | N/A | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 124. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M |
By formula: Br- + C6H6 = (Br- • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. ± 8.4 | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.1 | J/mol*K | PHPMS | Hiraoka, Mizuse, et al., 1988 | gas phase; M |
ΔrS° | 71. | J/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10. ± 4.2 | kJ/mol | IMRE | Paul and Kebarle, 1991 | gas phase; B |
ΔrG° | 16. ± 11. | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0 | 423. | PHPMS | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: (Na+ • C6H6) + C6H6 = (Na+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 81. ± 5. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
By formula: Na+ + C6H6 = (Na+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 95.4 ± 5.9 | kJ/mol | CIDC | Amicangelo and Armentrout, 2001 | Anchor NH3=24.41; RCD |
ΔrH° | 88.3 ± 5.0 | kJ/mol | CIDT | Amicangelo and Armentrout, 2000 | RCD |
ΔrH° | 88.3 ± 4.6 | kJ/mol | CIDT | Armentrout and Rodgers, 2000 | RCD |
ΔrH° | 117. | kJ/mol | HPMS | Guo, Purnell, et al., 1990 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 131. | J/mol*K | HPMS | Guo, Purnell, et al., 1990 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
65.7 | 298. | IMRE | McMahon and Ohanessian, 2000 | Anchor alanine=39.89; RCD |
By formula: C9H13N+ + C6H6 = (C9H13N+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.9 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
11. | 331. | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
By formula: C7H9N+ + C6H6 = (C7H9N+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.5 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 19. | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
By formula: C8H11N+ + C6H6 = (C8H11N+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 41.8 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 9.2 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
By formula: C10H10Fe+ + C6H6 = (C10H10Fe+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 30. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1989 | gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Meot-Ner (Mautner), 1989 | gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
13. | 252. | PHPMS | Meot-Ner (Mautner), 1989 | gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M |
By formula: (Co+ • C6H6) + C6H6 = (Co+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 167. ± 14. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 116. | J/mol*K | SIDT | Kemper, Bushnell, et al., 1993 | gas phase; ΔrS(490 K); M |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
167. (+13.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M | |
113. (+4.2,-0.) | SIDT | Kemper, Bushnell, et al., 1993 | gas phase; ΔrS(490 K); M |
By formula: C7H8+ + C6H6 = (C7H8+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.0 | kJ/mol | MPI | Ernstberger, Krause, et al., 1990 | gas phase; M |
ΔrH° | 23. | kJ/mol | PI | Ruhl, Bisling, et al., 1986 | gas phase; from vIP of perpendicular dimer; M |
ΔrH° | 51.9 | kJ/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: C2H7O+ + C6H6 = (C2H7O+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 88. | kJ/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
36. | 491. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
By formula: (K+ • C6H6 • H2O) + C6H6 = (K+ • 2C6H6 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 60.2 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+ 3H2O)C6H6, Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 126. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+ 3H2O)C6H6, Searles and Kebarle, 1969; M |
By formula: (K+ • 2H2O • C6H6) + H2O = (K+ • 3H2O • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.4 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+)4H2O; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+)4H2O; Searles and Kebarle, 1969; M |
By formula: (K+ • H2O • C6H6) + H2O = (K+ • 2H2O • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 53.1 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+)3H2O; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 89.5 | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle,switching reaction(K+)3H2O; Searles and Kebarle, 1969; M |
By formula: I- + C6H6 = (I- • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 26. ± 8.4 | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B,M |
ΔrH° | 38. ± 4.2 | kJ/mol | TDAs | Caldwell, Masucci, et al., 1989 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 59.4 | J/mol*K | PHPMS | Hiraoka, Mizuse, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 8. ± 11. | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1988 | gas phase; B |
By formula: C3H3+ + C6H6 = (C3H3+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. | kJ/mol | HPMS | Field, Hamlet, et al., 1969 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 40. | J/mol*K | HPMS | Field, Hamlet, et al., 1969 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30. | kJ/mol | HPMS | Field, Hamlet, et al., 1969 | gas phase; Entropy change is questionable; M |
By formula: (K+ • H2O • 2C6H6) + H2O = (K+ • 2H2O • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.0 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 123. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; From thermochemical cycle(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M |
By formula: (C6H6+ • 2C6H6) + C6H6 = (C6H6+ • 3C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 29. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Hiraoka, Fujimaki, et al., 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: (K+ • C6H6 • 2H2O) + C6H6 = (K+ • 2C6H6 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 53.6 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 141. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M |
By formula: Cr+ + C6H6 = (Cr+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 168. | kJ/mol | MID | Lin, Chen, et al., 1997 | RCD |
ΔrH° | 164. ± 14. | kJ/mol | RAK | Lin and Dunbar, 1997 | RCD |
ΔrH° | 170. ± 10. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
170. (+9.6,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (K+ • 2C6H6) + H2O = (K+ • H2O • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 57.3 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ 2H2O)C6H6; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 109. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ 2H2O)C6H6; Searles and Kebarle, 1969; M |
By formula: (K+ • C6H6) + H2O = (K+ • H2O • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 75.7 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ C6H6)C6H6; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 125. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+ C6H6)C6H6; Searles and Kebarle, 1969; M |
By formula: (K+ • 2H2O) + C6H6 = (K+ • C6H6 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56.1 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)3H2O; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 102. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)3H2O; Searles and Kebarle, 1969; M |
By formula: (K+ • 3H2O) + C6H6 = (K+ • C6H6 • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 52.7 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 115. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M |
By formula: (K+ • H2O) + C6H6 = (K+ • C6H6 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 70.3 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)2H2O; Searles and Kebarle, 1969; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 113. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; switching reaction(K+)2H2O; Searles and Kebarle, 1969; M |
By formula: (Cr+ • C6H6) + C6H6 = (Cr+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 212. ± 38. | kJ/mol | RAK | Lin and Dunbar, 1997 | RCD |
ΔrH° | 232. ± 18. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
231. (+18.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: F- + C6H6 = (F- • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 64.02 | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PHPMS | Hiraoka, Mizuse, et al., 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 39.3 | kJ/mol | TDAs | Hiraoka, Mizuse, et al., 1987 | gas phase; B |
By formula: Mn+ + C6H6 = (Mn+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 144. | kJ/mol | MID | Lin, Chen, et al., 1997 | RCD |
ΔrH° | 133. ± 9.2 | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
133. (+8.8,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: V+ + C6H6 = (V+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | >230. | kJ/mol | RAK | Gapeev and Dunbar, 2002 | RCD |
ΔrH° | 234. ± 10. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
233. (+9.6,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: Fe+ + C6H6 = (Fe+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 197. | kJ/mol | RAK | Gapeev and Dunbar, 2002 | RCD |
ΔrH° | 207. ± 12. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
208. (+9.6,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: Ti+ + C6H6 = (Ti+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 213. | kJ/mol | RAK | Gapeev and Dunbar, 2002 | RCD |
ΔrH° | 259. ± 9.2 | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
259. (+8.8,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (K+ • C6H6) + C6H6 = (K+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 67.4 ± 7.1 | kJ/mol | CIDT | Amicangelo and Armentrout, 2000 | RCD |
ΔrH° | 78.7 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 142. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; M |
By formula: C4H9+ + C6H6 = (C4H9+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 92. | kJ/mol | PHPMS | Sen Sharma, Ikuta, et al., 1982 | gas phase; forms protonated t-butylbenzene; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 210. | J/mol*K | PHPMS | Sen Sharma, Ikuta, et al., 1982 | gas phase; forms protonated t-butylbenzene; M |
By formula: (C6H6+ • C6H6) + C6H6 = (C6H6+ • 2C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. ± 2. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.8 | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1991 | gas phase; M |
By formula: K+ + C6H6 = (K+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 73. ± 4. | kJ/mol | CIDT | Amicangelo and Armentrout, 2000 | RCD |
ΔrH° | 80.3 | kJ/mol | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 103. | J/mol*K | HPMS | Sunner, Nishizawa, et al., 1981 | gas phase; M |
By formula: C6H7N+ + C6H6 = (C6H7N+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.8 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.6 | J/mol*K | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
By formula: C11H10+ + C6H6 = (C11H10+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. | kJ/mol | PHPMS | El-Shall and Meot-Ner (Mautner), 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | El-Shall and Meot-Ner (Mautner), 1987 | gas phase; M |
By formula: C6H5Cl+ + C6H6 = (C6H5Cl+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 58.6 | kJ/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: C9H12+ + C6H6 = (C9H12+ • C6H6)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.4 | kJ/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: NO- + C6H6 = (NO- • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 172. | kJ/mol | ICR | Reents and Freiser, 1981 | gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978; M |
By formula: (Fe+ • C6H6) + C6H6 = (Fe+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 187. ± 16. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
187. (+16.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (Ti+ • C6H6) + C6H6 = (Ti+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 253. ± 18. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
253. (+18.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (Mn+ • C6H6) + C6H6 = (Mn+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 203. ± 16. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
203. (+16.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (Ni+ • C6H6) + C6H6 = (Ni+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 147. ± 12. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
147. (+12.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: (Cu+ • C6H6) + C6H6 = (Cu+ • 2C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 155. ± 12. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
155. (+12.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
(CAS Reg. No. 79431-04-2 • 4294967295) + = CAS Reg. No. 79431-04-2
By formula: (CAS Reg. No. 79431-04-2 • 4294967295C6H6) + C6H6 = CAS Reg. No. 79431-04-2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 90. ± 18. | kJ/mol | Ther | Lee and Squires, 1986 | gas phase; Between SiH4, tBuOH; value altered from reference due to change in acidity scale; B |
By formula: Ni+ + C6H6 = (Ni+ • C6H6)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 243. ± 11. | kJ/mol | CIDT | Meyer, Khan, et al., 1995 | RCD |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
243. (+10.,-0.) | CID | Meyer, Khan, et al., 1995 | gas phase; guided ion beam CID; M |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C6H6+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.24378 ± 0.00007 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 750.4 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 725.4 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Proton affinity at 298K
Proton affinity (kJ/mol) | Reference | Comment |
---|---|---|
746.4 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Gas basicity at 298K
Gas basicity (review) (kJ/mol) | Reference | Comment |
---|---|---|
721.7 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Ionization energy determinations
Appearance energy determinations
De-protonation reactions
C6H5- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1678.7 ± 2.1 | kJ/mol | G+TS | Davico, Bierbaum, et al., 1995 | gas phase; Revised per Ervin and DeTuro, 2002 change in NH3 acidity. Alecu, Gao, et al., 2007 using thermal methods, agrees with this BDE: 112.8±0.6; value altered from reference due to change in acidity scale; B |
ΔrH° | 1678.5 ± 0.88 | kJ/mol | D-EA | Gunion, Gilles, et al., 1992 | gas phase; B |
ΔrH° | 1677. ± 10. | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; B |
ΔrH° | 1680. ± 42. | kJ/mol | CIDT | Graul and Squires, 1990 | gas phase; B |
ΔrH° | 1665. ± 23. | kJ/mol | G+TS | Bohme and Young, 1971 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1641.8 ± 1.7 | kJ/mol | IMRE | Davico, Bierbaum, et al., 1995 | gas phase; Revised per Ervin and DeTuro, 2002 change in NH3 acidity. Alecu, Gao, et al., 2007 using thermal methods, agrees with this BDE: 112.8±0.6; value altered from reference due to change in acidity scale; B |
ΔrG° | 1636. ± 8.4 | kJ/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; B |
ΔrG° | 1632. ± 27. | kJ/mol | IMRB | Bartmess and McIver Jr., 1979 | gas phase; B |
ΔrG° | 1628. ± 23. | kJ/mol | IMRB | Bohme and Young, 1971 | gas phase; B |
References
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes,
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Heat capacity of benzene at high pressures,
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Lainez, A.; Rodrigo, M.M.; Wilhelm, E.; Grolier, J.-P.E.,
Excess volumes and excess heaat capacitiies of some mixtures with trans,trans,cis-1,5,9-cyclododecatriene at 298.15K,
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Excess molar isobaric heat capacities and isentropic compressibilities of (cis- or trans-decalin + benzene or toluene or iso-octane or n-heptane) at 298.15 K,
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Thermal and volumetric properties of chloroform + benzene mixtures and the ideal associated solution model of complex formation,
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Electron impact ionisation energies of some halo-cyclotriphosphazenes,
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30.4-nm He(II) photoelectron spectra of organic molecules,
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Mattsson, Karlsson, et al., 1977
Mattsson, L.; Karlsson, L.; Jadrny, R.; Siegbahn, K.,
Valence electron spectrum of C6H6 excited by linearly polarized HeI radiation,
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Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P.,
Valence ionization enrgies of hydrocarbons,
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Electron impact study of benzene,
Egypt. J. Phys., 1976, 7, 91. [all data]
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An evaluation of empirical methods for calculating the ionization potentials of substituted benzenes,
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Baldwin, Loudon, et al., 1976
Baldwin, M.A.; Loudon, A.G.; Maccoll, A.; Webb, K.S.,
The nature and fragmentation pathways of the molecular ions of some arylureas, arylthioureas, acetanilides, thioacetanilides and related compounds,
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Hyperconjugation and its role in group IV chemistry,
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Tajima, Shimizu, et al., 1972
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The effect of the shield voltage on appearance potential measurements using a mass spectrometer,
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Finney and Harrison, 1972
Finney, C.D.; Harrison, A.G.,
A third-derivative method for determining electron-impact onset potentials,
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Chizhov, Kleimenov, et al., 1972
Chizhov, Yu.V.; Kleimenov, V.I.; Medynskii, G.S.; Vilesov, F.I.,
Photoelectron spectra of some bromoethylenes and 2-bromopropene,
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Sergeev, Akopyan, et al., 1970
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Ionization potential and structure of olefins,
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Buchs, 1970
Buchs, A.,
Etude par spectrometrie de masse de l'ionisation de benzonitriles, de phenylacetonitriles et de N,N-dimethylanilines substitues,
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Jahn-Teller effect in the vibrational structure of the photoelectron spectrum of benzene,
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Photoionization resonance spectra. I. Nitric oxide and benzene,
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Dewar, M.J.S.; Worley, S.D.,
Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation,
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d-Orbitaleffekte in silicium-substituierten π-Elektronensystemen. X. Vertikale Ionisierungsenergien von Alkyl- und Silyl-benzolen,
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Baker, A.D.; May, D.P.; Turner, D.W.,
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The interpretation of photoelectron spectra especially those of benzene and water,
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Clark and Frost, 1967
Clark, I.D.; Frost, D.C.,
A study of the energy levels in benzene and some fluorobenzenes by photoelectron spectroscopy,
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Nounou, 1966
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Etude des composes aromatiques par spectrometrie de masse. I. Mesure des potentials d'ionisation et d'apparition par la methode du potential retardateur et interpretation des courbes d'ionisation differentielle,
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Massenspektrometrische Untersuchung der Photoionisation von Molekulen,
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Photoionization-efficiency curves. II. False and genuine structure,
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Dibeler and Reese, 1964
Dibeler, V.H.; Reese, R.M.,
Mass spectrometric study of photoionization. I. Apparatus and initial observations on acetylene, acetylene-d2, benzene, and benzene-d6,
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Molecular photoelectron spectroscopy. Part II. A summary of ionization potentials,
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Charge transfer in organic solids, induced by light,
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Absorption spectra and ionization potentials of benzene and benzene-d6,
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Watanabe, 1954
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Photoionization and total absorption cross section of gases. I. Ionization potentials of several molecules. Cross sections of NH3 and NO,
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Hustrulid, Kusch, et al., 1938
Hustrulid, A.; Kusch, P.; Tate, J.T.,
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Price and Wood, 1935
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The far ultraviolet absorption spectra and ionization potentials of C6H6 and C6D6,
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Howell, Goncalves, et al., 1984
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Photoelectron spectra of the cyclophanes,
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Kaim, Tesmann, et al., 1980
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Me3C-, Me3Si-, Me3Ge-, Me3Sn- und Me3Pb-substituierte benzol- und naphthalin-derivate und ihre radikalanionen,
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Sell and Kupperman, 1978
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Angular distributions in the photoelectron spectra of benzene and its monohalogenated derivatives,
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Kobayashi, 1978
Kobayashi, T.,
A simple general tendency in photoelectron angular distributions of some monosubstituted benzenes,
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Klasinc, Novak, et al., 1978
Klasinc, L.; Novak, I.; Scholz, M.; Kluge, G.,
Photoelektronenspektren substituierter Pyridine und Benzole und ihre Interpretation durch die CNDO/SWW-Methode,
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Schmidt, 1977
Schmidt, W.,
Photoelectron spectra of polynuclear aromatics. V. Correlations with ultraviolet absorption spectra in the catacondensed series,
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Gower, Kane-Maguire, et al., 1977
Gower, M.; Kane-Maguire, L.A.P.; Maier, J.P.; Sweigart, D.A.,
Ultraviolet photoelectron spectra of cyclohepta-1,3,5-triene and mesitylene tricarbonyl complexes of the group 6A metals,
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Bock, Kaim, et al., 1977
Bock, H.; Kaim, W.; Rohwer, H.E.,
Radical ions XI*. One-electron oxidation of alkylsilyl benzenes in the gas phase and in solution,
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Clar and Schmidt, 1976
Clar, E.; Schmidt, W.,
Correlations between photoelectron and phosphorescence spectra of polycyclic hydrocarbons,
Tetrahedron, 1976, 32, 2563. [all data]
Kobayashi and Nagakura, 1975
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Angular distribution for the photoelectron spectra of benzene and hexafluorobenzene,
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Bischof, Dewar, et al., 1974
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Schafer and Schweig, 1972
Schafer, W.; Schweig, A.,
Zur Konjugation in aromatischen Aminen und Phosphanen,
Angew. Chem., 1972, 84, 898. [all data]
Klessinger, 1972
Klessinger, M.,
Ionization potentials of substituted benzenes,
Angew. Chem. Int. Ed. Engl., 1972, 11, 525. [all data]
Bock, Wagner, et al., 1972
Bock, H.; Wagner, G.; Kroner, J.,
Photoelektronenspektren und molekuleigenschaften, XIV. Die delokalisation des schwefel-elektronenpaar in CH3S-substituierten aromaten,
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Carlson and Anderson, 1971
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Angular distribution of the photoelectron spectrum for benzene,
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Bock and Fuss, 1971
Bock, H.; Fuss, W.,
Arguments concerning the orbital sequence in borazin,
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Gleiter, Heilbronner, et al., 1970
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Lone pair interaction in pyridazine, pyrimidine, and pyrazine,
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Olmsted, Street, et al., 1964
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Excess-kinetic-energy ions in organic mass spectra,
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Lifshitz and Reuben, 1969
Lifshitz, C.; Reuben, B.G.,
Ion-molecule reactions in aromatic systems. I. Secondary ions and reaction rates in benzene,
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Natalis and Franklin, 1965
Natalis, P.; Franklin, J.L.,
Ionization and dissociation of diphenyl and condensed ring aromatics by electron impact. I. Biphenyl, diphenylacetylene, and phenanthrene,
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Kuhlewind, Kiermeier, et al., 1986
Kuhlewind, H.; Kiermeier, A.; Neusser, H.J.,
Multiphoton ionization in a reflectron time-of-flight mass spectrometer: Individual rates of competing dissociation channels in energy-selected benzene cations [Data derived from reported threshold energies taking value of 9.244 eV for IE[Benzene]],
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Eland, Frey, et al., 1976
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New results on the fragmentation of the benzene ion,
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Rosenstock, Larkins, et al., 1973
Rosenstock, H.M.; Larkins, J.T.; Walker, J.A.,
Interpretation of photoionization thresholds: Quasiequilibrium theory and the fragmentation of benzene,
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Rosenstock, McCulloh, et al., 1977
Rosenstock, H.M.; McCulloh, K.E.; Lossing, F.P.,
On the mechanisms of C6H6 ionization fragmentation,
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Hickling and Jennings, 1970
Hickling, R.D.; Jennings, K.R.,
Kinetic shifts and metastable transitions,
Org. Mass Spectrom., 1970, 3, 1499. [all data]
Bentley, Johnstone, et al., 1973
Bentley, T.W.; Johnstone, R.A.W.; McMaster, B.N.,
Appearance potentials of metastable and normal ions and the kinetic shift,
J. Chem. Soc., Chem. Commun., 1973, 510. [all data]
Klippenstein, Faulk, et al., 1993
Klippenstein, S.J.; Faulk, J.D.; Dunbar, R.C.,
A combined theoretical and experimental study of the dissociation of benzene cation,
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Gross, 1972
Gross, M.L.,
Ion cyclotron resonance spectrometry. A means of evaluating 'kinetic shifts',
Org. Mass Spectrom., 1972, 6, 827. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid IE (evaluated) Recommended ionization energy S°liquid Entropy of liquid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) T Temperature ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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