Benzene

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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
Δfliquid49. ± 0.9kJ/molReviewRoux, Temprado, et al., 2008There 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
Δfliquid48.95 ± 0.54kJ/molCcbGood and Smith, 1969ALS
Δfliquid49.04 ± 0.50kJ/molCcbProsen, Gilmont, et al., 1945Hf by Prosen, Johnson, et al., 1946; ALS
Δfliquid46.0kJ/molCcbLandrieu, Baylocq, et al., 1929ALS
Quantity Value Units Method Reference Comment
Δcliquid-3267. ± 20.kJ/molAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
liquid173.26J/mol*KN/AOliver, Eaton, et al., 1948DH
liquid175.3J/mol*KN/AHuffman, Parks, et al., 1930Extrapolation below 90 K, 47.49 J/mol*K.; DH
Quantity Value Units Method Reference Comment
solid,1 bar45.56J/mol*KN/AAhlberg, Blanchard, et al., 1937DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
135.69298.15Grolier, Roux-Desgranges, et al., 1993DH
135.9298.5Czarnota, 1991p = 0.1 MPa. Cp values given for the pressure range 0.1 to 68.1 MPa.; DH
135.62298.15Lainez, Rodrigo, et al., 1989DH
134.63298.15Shiohama, Ogawa, et al., 1988DH
135.75298.15Grolier, Roux-Desgranges, et al., 1987DH
134.61293.15Kalali, Kohler, et al., 1987T = 293.15, 313.15 K.; DH
135.707298.15Tanaka, 1987DH
139.9322.05Naziev, Bashirov, et al., 1986T = 322.05, 351.15 K. p = 0.1 MPa. Unsmoothed experimental datum given as 1.7915 kJ/kg*K.; DH
137.4303.15Reddy, 1986T = 303.15, 313.15 K.; DH
136.06298.15Ogawa and Murakami, 1985DH
135.718298.15Tanaka, 1985DH
136.24298.15Gorbunova, Simonov, et al., 1983T = 283.78 to 348.47 K. Cp = 1.3943 - 5.857x10-4T + 5.89x10-6T2 kJ/kg*K. Cp value calculated from equation.; DH
136.5300.Gorbunova, Grigoriev, et al., 1982T = 280 to 353 K. Data also given by equation.; DH
135.7298.15Grolier, Inglese, et al., 1982T = 298.15 K.; DH
135.74298.15Tanaka, 1982Temperatures 293.15, 298.15, 303.15 K.; DH
135.60298.15Wilhelm, Faradjzadeh, et al., 1982DH
133.6293.15Atalla, El-Sharkawy, et al., 1981DH
135.90298.15Vesely, Zabransky, et al., 1979DH
135.61298.15Grolier, Wilhelm, et al., 1978DH
135.90298.15Vesely, Svoboda, et al., 1977T = 298 to 318 K.; DH
135.60298.15Wilhelm, Grolier, et al., 1977DH
135.76298.15Fortier, Benson, et al., 1976DH
135.760298.15Fortier and Benson, 1976DH
135.7298.15Rajagopal and Subrahmanyam, 1974T = 298.15 to 323.15 K.; DH
134.3298.Deshpande and Bhatagadde, 1971T = 298 to 318 K.; DH
135.9298.15Hyder Khan and Subrahmanyam, 1971T = 298; 313 K.; DH
135.9298.Subrahmanyam and Khan, 1969DH
135.4298.Recko, 1968T = 24 to 40°C, equation only.; DH
130.298.Pacor, 1967DH
134.6293.Rastorguev and Ganiev, 1967T = 293 to 353 K.; DH
135.30300.Findenegg, Gruber, et al., 1965DH
134.98298.Rabinovich and Nikolaev, 1962T = 10 to 35°C.; DH
135.1316.Swietoslawski and Zielenkiewicz, 1960Mean value 21 to 66°C.; DH
136.4303.Duff and Everett, 1956T = 303 to 353 K.; DH
135.23298.Staveley, Tupman, et al., 1955T = 288 to 347 K.; DH
31.8293.Sieg, Crtzen, et al., 1951DH
136.06298.15Oliver, Eaton, et al., 1948T = 13 to 337 K.; DH
119.295.Tschamler, 1948DH
133.5298.Kurbatov, 1947T = 9 to 80°C, mean Cp, five temperatures.; DH
136.0298.1Zhdanov, 1941T = 8 to 46°C.; DH
135.44298.2Burlew, 1940T = 281 to 353 K.; DH
131.4287.8Kolosovskii and Udovenko, 1934DH
131.4287.8de Kolossowsky and Udowenko, 1933DH
131.4298.15Ferguson and Miller, 1933T = 293 to 323 K. Data calculated from equation.; DH
135.1298.1Richards and Wallace, 1932T = 293 to 333 K.; DH
143.57323.15Fiock, Ginnings, et al., 1931T = 50 to 110°C.; DH
135.1300.0Huffman, Parks, et al., 1930T = 93 to 300 K. Value is unsmoothed experimental datum.; DH
132.2298.Andrews, Lynn, et al., 1926T = -18 to 110°C.; DH
133.1293.2Williams and Daniels, 1925T = 20 to 60°C.; DH
133.9303.Willams and Daniels, 1924T = 303 to 333 K. Equation only.; DH
137.2298.Dejardin, 1919T = 24 to 50°C.; DH
133.5298.von Reis, 1881T = 292 to 364 K.; DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
47.8690.Ahlberg, Blanchard, et al., 1937T = 4 to 93 K.; DH
97.9223.9Aoyama and Kanda, 1935T = 82 to 224 K. Value is unsmoothed experimental datum.; DH
118.4273.Maass and Walbauer, 1925T = 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

Chlorine anion + Benzene = (Chlorine anion • Benzene)

By formula: Cl- + C6H6 = (Cl- • C6H6)

Quantity Value Units Method Reference Comment
Δr25.1 ± 1.9kJ/molN/ATschurl, Ueberfluss, et al., 2007gas phase; B
Δr39. ± 8.4kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Δr41.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Δr36.kJ/molPHPMSPaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
Δr43.5kJ/molPHPMSSunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr74.9J/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Δr71.J/mol*KN/APaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
Δr71.5J/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δr92.J/mol*KN/ASunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr17. ± 11.kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B
Δr16. ± 6.7kJ/molIMREChowdhury and Kebarle, 1986gas phase; B
Δr20. ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Δr15.9kJ/molIMREFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
15.300.PHPMSPaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
16.300.PHPMSChowdhury and Kebarle, 1986gas phase; M
16.300.PHPMSSunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M

C6H5- + Hydrogen cation = Benzene

By formula: C6H5- + H+ = C6H6

Quantity Value Units Method Reference Comment
Δr1678.7 ± 2.1kJ/molG+TSDavico, Bierbaum, et al., 1995gas 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
Δr1678.5 ± 0.88kJ/molD-EAGunion, Gilles, et al., 1992gas phase; B
Δr1677. ± 10.kJ/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr1680. ± 42.kJ/molCIDTGraul and Squires, 1990gas phase; B
Δr1665. ± 23.kJ/molG+TSBohme and Young, 1971gas phase; B
Quantity Value Units Method Reference Comment
Δr1641.8 ± 1.7kJ/molIMREDavico, Bierbaum, et al., 1995gas 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
Δr1636. ± 8.4kJ/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr1632. ± 27.kJ/molIMRBBartmess and McIver Jr., 1979gas phase; B
Δr1628. ± 23.kJ/molIMRBBohme and Young, 1971gas phase; B

C6H6+ + Benzene = (C6H6+ • Benzene)

By formula: C6H6+ + C6H6 = (C6H6+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr60. ± 30.kJ/molAVGN/AAverage of 7 out of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Δr120.J/mol*KPHPMSHiraoka, Fujimaki, et al., 1991gas phase; M
Δr110.J/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Δr96.J/mol*KHPMSField, Hamlet, et al., 1969gas phase; M

Lithium ion (1+) + Benzene = (Lithium ion (1+) • Benzene)

By formula: Li+ + C6H6 = (Li+ • C6H6)

Quantity Value Units Method Reference Comment
Δr161. ± 13.kJ/molCIDTAmicangelo and Armentrout, 2000RCD
Δr159.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
Δr153.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
Δr115.J/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
Δr124.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M

Bromine anion + Benzene = (Bromine anion • Benzene)

By formula: Br- + C6H6 = (Br- • C6H6)

Quantity Value Units Method Reference Comment
Δr38. ± 8.4kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr71.1J/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Δr71.J/mol*KN/APaul and Kebarle, 1991gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr10. ± 4.2kJ/molIMREPaul and Kebarle, 1991gas phase; B
Δr16. ± 11.kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
0.0423.PHPMSPaul and Kebarle, 1991gas phase; Entropy change calculated or estimated; M

(Sodium ion (1+) • Benzene) + Benzene = (Sodium ion (1+) • 2Benzene)

By formula: (Na+ • C6H6) + C6H6 = (Na+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr81. ± 5.kJ/molAVGN/AAverage of 7 values; Individual data points

Sodium ion (1+) + Benzene = (Sodium ion (1+) • Benzene)

By formula: Na+ + C6H6 = (Na+ • C6H6)

Quantity Value Units Method Reference Comment
Δr95.4 ± 5.9kJ/molCIDCAmicangelo and Armentrout, 2001Anchor NH3=24.41; RCD
Δr88.3 ± 5.0kJ/molCIDTAmicangelo and Armentrout, 2000RCD
Δr88.3 ± 4.6kJ/molCIDTArmentrout and Rodgers, 2000RCD
Δr117.kJ/molHPMSGuo, Purnell, et al., 1990gas phase; M
Quantity Value Units Method Reference Comment
Δr131.J/mol*KHPMSGuo, Purnell, et al., 1990gas phase; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
65.7298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

C9H13N+ + Benzene = (C9H13N+ • Benzene)

By formula: C9H13N+ + C6H6 = (C9H13N+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr46.9kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
11.331.PHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C7H9N+ + Benzene = (C7H9N+ • Benzene)

By formula: C7H9N+ + C6H6 = (C7H9N+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr51.5kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr19.kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C8H11N+ + Benzene = (C8H11N+ • Benzene)

By formula: C8H11N+ + C6H6 = (C8H11N+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr41.8kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr9.2kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C10H10Fe+ + Benzene = (C10H10Fe+ • Benzene)

By formula: C10H10Fe+ + C6H6 = (C10H10Fe+ • C6H6)

Quantity Value Units Method Reference Comment
Δr30.kJ/molPHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M
Quantity Value Units Method Reference Comment
Δr84.J/mol*KN/AMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
13.252.PHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

(Cobalt ion (1+) • Benzene) + Benzene = (Cobalt ion (1+) • 2Benzene)

By formula: (Co+ • C6H6) + C6H6 = (Co+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr167. ± 14.kJ/molCIDTMeyer, Khan, et al., 1995RCD
Quantity Value Units Method Reference Comment
Δr116.J/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
167. (+13.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M
113. (+4.2,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

C7H8+ + Benzene = (C7H8+ • Benzene)

By formula: C7H8+ + C6H6 = (C7H8+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr51.0kJ/molMPIErnstberger, Krause, et al., 1990gas phase; M
Δr23.kJ/molPIRuhl, Bisling, et al., 1986gas phase; from vIP of perpendicular dimer; M
Δr51.9kJ/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

C2H7O+ + Benzene = (C2H7O+ • Benzene)

By formula: C2H7O+ + C6H6 = (C2H7O+ • C6H6)

Quantity Value Units Method Reference Comment
Δr88.kJ/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr100.J/mol*KN/ADeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
36.491.PHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M

(Potassium ion (1+) • Benzene • Water) + Benzene = (Potassium ion (1+) • 2Benzene • Water)

By formula: (K+ • C6H6 • H2O) + C6H6 = (K+ • 2C6H6 • H2O)

Quantity Value Units Method Reference Comment
Δr60.2kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+ 3H2O)C6H6, Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr126.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+ 3H2O)C6H6, Searles and Kebarle, 1969; M

(Potassium ion (1+) • 2Water • Benzene) + Water = (Potassium ion (1+) • 3Water • Benzene)

By formula: (K+ • 2H2O • C6H6) + H2O = (K+ • 3H2O • C6H6)

Quantity Value Units Method Reference Comment
Δr49.4kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+)4H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+)4H2O; Searles and Kebarle, 1969; M

(Potassium ion (1+) • Water • Benzene) + Water = (Potassium ion (1+) • 2Water • Benzene)

By formula: (K+ • H2O • C6H6) + H2O = (K+ • 2H2O • C6H6)

Quantity Value Units Method Reference Comment
Δr53.1kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+)3H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr89.5J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+)3H2O; Searles and Kebarle, 1969; M

Iodide + Benzene = (Iodide • Benzene)

By formula: I- + C6H6 = (I- • C6H6)

Quantity Value Units Method Reference Comment
Δr26. ± 8.4kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Δr38. ± 4.2kJ/molTDAsCaldwell, Masucci, et al., 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr59.4J/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr8. ± 11.kJ/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B

C3H3+ + Benzene = (C3H3+ • Benzene)

By formula: C3H3+ + C6H6 = (C3H3+ • C6H6)

Quantity Value Units Method Reference Comment
Δr38.kJ/molHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr40.J/mol*KHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr30.kJ/molHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M

(Potassium ion (1+) • Water • 2Benzene) + Water = (Potassium ion (1+) • 2Water • 2Benzene)

By formula: (K+ • H2O • 2C6H6) + H2O = (K+ • 2H2O • 2C6H6)

Quantity Value Units Method Reference Comment
Δr51.0kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr123.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M

(C6H6+ • 2Benzene) + Benzene = (C6H6+ • 3Benzene)

By formula: (C6H6+ • 2C6H6) + C6H6 = (C6H6+ • 3C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr29.kJ/molPHPMSHiraoka, Fujimaki, et al., 1991gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr84.J/mol*KN/AHiraoka, Fujimaki, et al., 1991gas phase; Entropy change calculated or estimated; M

(Potassium ion (1+) • Benzene • 2Water) + Benzene = (Potassium ion (1+) • 2Benzene • 2Water)

By formula: (K+ • C6H6 • 2H2O) + C6H6 = (K+ • 2C6H6 • 2H2O)

Quantity Value Units Method Reference Comment
Δr53.6kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr141.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M

Chromium ion (1+) + Benzene = (Chromium ion (1+) • Benzene)

By formula: Cr+ + C6H6 = (Cr+ • C6H6)

Quantity Value Units Method Reference Comment
Δr168.kJ/molMIDLin, Chen, et al., 1997RCD
Δr164. ± 14.kJ/molRAKLin and Dunbar, 1997RCD
Δr170. ± 10.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
170. (+9.6,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Potassium ion (1+) • 2Benzene) + Water = (Potassium ion (1+) • Water • 2Benzene)

By formula: (K+ • 2C6H6) + H2O = (K+ • H2O • 2C6H6)

Quantity Value Units Method Reference Comment
Δr57.3kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 2H2O)C6H6; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr109.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 2H2O)C6H6; Searles and Kebarle, 1969; M

(Potassium ion (1+) • Benzene) + Water = (Potassium ion (1+) • Water • Benzene)

By formula: (K+ • C6H6) + H2O = (K+ • H2O • C6H6)

Quantity Value Units Method Reference Comment
Δr75.7kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ C6H6)C6H6; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr125.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ C6H6)C6H6; Searles and Kebarle, 1969; M

(Potassium ion (1+) • 2Water) + Benzene = (Potassium ion (1+) • Benzene • 2Water)

By formula: (K+ • 2H2O) + C6H6 = (K+ • C6H6 • 2H2O)

Quantity Value Units Method Reference Comment
Δr56.1kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)3H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr102.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)3H2O; Searles and Kebarle, 1969; M

(Potassium ion (1+) • 3Water) + Benzene = (Potassium ion (1+) • Benzene • 3Water)

By formula: (K+ • 3H2O) + C6H6 = (K+ • C6H6 • 3H2O)

Quantity Value Units Method Reference Comment
Δr52.7kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr115.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M

(Potassium ion (1+) • Water) + Benzene = (Potassium ion (1+) • Benzene • Water)

By formula: (K+ • H2O) + C6H6 = (K+ • C6H6 • H2O)

Quantity Value Units Method Reference Comment
Δr70.3kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)2H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr113.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)2H2O; Searles and Kebarle, 1969; M

(Chromium ion (1+) • Benzene) + Benzene = (Chromium ion (1+) • 2Benzene)

By formula: (Cr+ • C6H6) + C6H6 = (Cr+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr212. ± 38.kJ/molRAKLin and Dunbar, 1997RCD
Δr232. ± 18.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
231. (+18.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Fluorine anion + Benzene = (Fluorine anion • Benzene)

By formula: F- + C6H6 = (F- • C6H6)

Quantity Value Units Method Reference Comment
Δr64.02kJ/molTDAsHiraoka, Mizuse, et al., 1987gas phase; B,M
Quantity Value Units Method Reference Comment
Δr81.6J/mol*KPHPMSHiraoka, Mizuse, et al., 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr39.3kJ/molTDAsHiraoka, Mizuse, et al., 1987gas phase; B

Manganese ion (1+) + Benzene = (Manganese ion (1+) • Benzene)

By formula: Mn+ + C6H6 = (Mn+ • C6H6)

Quantity Value Units Method Reference Comment
Δr144.kJ/molMIDLin, Chen, et al., 1997RCD
Δr133. ± 9.2kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
133. (+8.8,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Vanadium ion (1+) + Benzene = (Vanadium ion (1+) • Benzene)

By formula: V+ + C6H6 = (V+ • C6H6)

Quantity Value Units Method Reference Comment
Δr>230.kJ/molRAKGapeev and Dunbar, 2002RCD
Δr234. ± 10.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
233. (+9.6,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Iron ion (1+) + Benzene = (Iron ion (1+) • Benzene)

By formula: Fe+ + C6H6 = (Fe+ • C6H6)

Quantity Value Units Method Reference Comment
Δr197.kJ/molRAKGapeev and Dunbar, 2002RCD
Δr207. ± 12.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
208. (+9.6,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Titanium ion (1+) + Benzene = (Titanium ion (1+) • Benzene)

By formula: Ti+ + C6H6 = (Ti+ • C6H6)

Quantity Value Units Method Reference Comment
Δr213.kJ/molRAKGapeev and Dunbar, 2002RCD
Δr259. ± 9.2kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
259. (+8.8,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Potassium ion (1+) • Benzene) + Benzene = (Potassium ion (1+) • 2Benzene)

By formula: (K+ • C6H6) + C6H6 = (K+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr67.4 ± 7.1kJ/molCIDTAmicangelo and Armentrout, 2000RCD
Δr78.7kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr142.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; M

C4H9+ + Benzene = (C4H9+ • Benzene)

By formula: C4H9+ + C6H6 = (C4H9+ • C6H6)

Quantity Value Units Method Reference Comment
Δr92.kJ/molPHPMSSen Sharma, Ikuta, et al., 1982gas phase; forms protonated t-butylbenzene; M
Quantity Value Units Method Reference Comment
Δr210.J/mol*KPHPMSSen Sharma, Ikuta, et al., 1982gas phase; forms protonated t-butylbenzene; M

(C6H6+ • Benzene) + Benzene = (C6H6+ • 2Benzene)

By formula: (C6H6+ • C6H6) + C6H6 = (C6H6+ • 2C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr33. ± 2.kJ/molPHPMSHiraoka, Fujimaki, et al., 1991gas phase; M
Quantity Value Units Method Reference Comment
Δr82.8J/mol*KPHPMSHiraoka, Fujimaki, et al., 1991gas phase; M

Potassium ion (1+) + Benzene = (Potassium ion (1+) • Benzene)

By formula: K+ + C6H6 = (K+ • C6H6)

Quantity Value Units Method Reference Comment
Δr73. ± 4.kJ/molCIDTAmicangelo and Armentrout, 2000RCD
Δr80.3kJ/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr103.J/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; M

C6H7N+ + Benzene = (C6H7N+ • Benzene)

By formula: C6H7N+ + C6H6 = (C6H7N+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr49.8kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr94.6J/mol*KPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; M

C11H10+ + Benzene = (C11H10+ • Benzene)

By formula: C11H10+ + C6H6 = (C11H10+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr38.kJ/molPHPMSEl-Shall and Meot-Ner (Mautner), 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr100.J/mol*KPHPMSEl-Shall and Meot-Ner (Mautner), 1987gas phase; M

C6H5Cl+ + Benzene = (C6H5Cl+ • Benzene)

By formula: C6H5Cl+ + C6H6 = (C6H5Cl+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr58.6kJ/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

C9H12+ + Benzene = (C9H12+ • Benzene)

By formula: C9H12+ + C6H6 = (C9H12+ • C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr44.4kJ/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

Nitric oxide anion + Benzene = (Nitric oxide anion • Benzene)

By formula: NO- + C6H6 = (NO- • C6H6)

Quantity Value Units Method Reference Comment
Δr172.kJ/molICRReents and Freiser, 1981gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978; M

(Iron ion (1+) • Benzene) + Benzene = (Iron ion (1+) • 2Benzene)

By formula: (Fe+ • C6H6) + C6H6 = (Fe+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr187. ± 16.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
187. (+16.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Titanium ion (1+) • Benzene) + Benzene = (Titanium ion (1+) • 2Benzene)

By formula: (Ti+ • C6H6) + C6H6 = (Ti+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr253. ± 18.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
253. (+18.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Manganese ion (1+) • Benzene) + Benzene = (Manganese ion (1+) • 2Benzene)

By formula: (Mn+ • C6H6) + C6H6 = (Mn+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr203. ± 16.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
203. (+16.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Nickel ion (1+) • Benzene) + Benzene = (Nickel ion (1+) • 2Benzene)

By formula: (Ni+ • C6H6) + C6H6 = (Ni+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr147. ± 12.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
147. (+12.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(Copper ion (1+) • Benzene) + Benzene = (Copper ion (1+) • 2Benzene)

By formula: (Cu+ • C6H6) + C6H6 = (Cu+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr155. ± 12.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
155. (+12.,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

(CAS Reg. No. 79431-04-2 • 4294967295Benzene) + Benzene = 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
Δr90. ± 18.kJ/molTherLee and Squires, 1986gas phase; Between SiH4, tBuOH; value altered from reference due to change in acidity scale; B

Nickel ion (1+) + Benzene = (Nickel ion (1+) • Benzene)

By formula: Ni+ + C6H6 = (Ni+ • C6H6)

Quantity Value Units Method Reference Comment
Δr243. ± 11.kJ/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
243. (+10.,-0.) CIDMeyer, Khan, et al., 1995gas 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 ± 0.00007eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)750.4kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity725.4kJ/molN/AHunter and Lias, 1998HL

Proton affinity at 298K

Proton affinity (kJ/mol) Reference Comment
746.4Aue, Guidoni, et al., 2000Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM

Gas basicity at 298K

Gas basicity (review) (kJ/mol) Reference Comment
721.7Aue, Guidoni, et al., 2000Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM

Ionization energy determinations

IE (eV) Method Reference Comment
9.24384 ± 0.00006TENemeth, Selzle, et al., 1993LL
9.24372 ± 0.00005TEChewter, Sander, et al., 1987LBLHLM
9.20EIStahl and Maquin, 1984LBLHLM
9.2459 ± 0.0002SGrubb, Whetten, et al., 1984LBLHLM
9.23 ± 0.03EIArimura and Yoshikawa, 1984LBLHLM
9.25PEKlasinc, Kovac, et al., 1983LBLHLM
9.23PECetinkaya, Lappert, et al., 1983LBLHLM
9.25PEKimura, Katsumata, et al., 1981LLK
9.240 ± 0.002LSDuncan, Dietz, et al., 1981LLK
9.44EIClare and Sowerby, 1981LLK
9.25PEBieri and Asbrink, 1980LLK
9.22PESell, Mintz, et al., 1978LLK
9.24PEMattsson, Karlsson, et al., 1977LLK
9.25 ± 0.02PEBieri, Burger, et al., 1977LLK
9.25 ± 0.07EISelim, 1976LLK
9.24PEBehan, Johnstone, et al., 1976LLK
9.70EIBaldwin, Loudon, et al., 1976LLK
9.25CTSPitt, 1973LLK
9.2 ± 0.1EITajima, Shimizu, et al., 1972LLK
9.26 ± 0.06EIFinney and Harrison, 1972LLK
9.27PEChizhov, Kleimenov, et al., 1972LLK
9.24 ± 0.01PISergeev, Akopyan, et al., 1970RDSH
9.25 ± 0.01PIDemeo and El-Sayed, 1970RDSH
9.36 ± 0.05EIBuchs, 1970RDSH
9.241 ± 0.001PEAsbrink, Lindholm, et al., 1970RDSH
9.241TEPeatman, Borne, et al., 1969RDSH
9.24 ± 0.01PEDewar and Worley, 1969RDSH
9.25 ± 0.01PIMomigny, Goffart, et al., 1968RDSH
9.20 ± 0.04EIBock, Seidl, et al., 1968RDSH
9.24PEBaker, May, et al., 1968RDSH
9.25PEBaker, Brundle, et al., 1968RDSH
9.25 ± 0.02PEClark and Frost, 1967RDSH
9.26 ± 0.02EINounou, 1966RDSH
9.246 ± 0.005PIBrehm, 1966RDSH
9.241 ± 0.006PINicholson, 1965RDSH
9.24 ± 0.01PIDibeler and Reese, 1964RDSH
9.25PEAl-Joboury and Turner, 1964RDSH
9.2PITerenin, 1961RDSH
9.248SEl-Sayed, Kaaba, et al., 1961RDSH
9.247 ± 0.002SWilkinson, 1956RDSH
9.25 ± 0.01PIWatanabe, 1954RDSH
9.8 ± 0.1EIHustrulid, Kusch, et al., 1938RDSH
9.242 ± 0.005SPrice and Wood, 1935RDSH
9.23PEHowell, Goncalves, et al., 1984Vertical value; LBLHLM
9.25PEKovac, Mohraz, et al., 1980Vertical value; LLK
9.25PEKaim, Tesmann, et al., 1980Vertical value; LLK
9.22PESell and Kupperman, 1978Vertical value; LLK
9.23PEKobayashi, 1978Vertical value; LLK
9.3PEKlasinc, Novak, et al., 1978Vertical value; LLK
9.24 ± 0.02PESchmidt, 1977Vertical value; LLK
9.25 ± 0.05PEGower, Kane-Maguire, et al., 1977Vertical value; LLK
9.24PEBock, Kaim, et al., 1977Vertical value; LLK
9.24PEClar and Schmidt, 1976Vertical value; LLK
9.23PEKobayashi and Nagakura, 1975Vertical value; LLK
9.24PEBischof, Dewar, et al., 1974Vertical value; LLK
9.24PESchafer and Schweig, 1972Vertical value; LLK
9.25 ± 0.03PEKlessinger, 1972Vertical value; LLK
9.24PEBock, Wagner, et al., 1972Vertical value; LLK
9.2PECarlson and Anderson, 1971Vertical value; LLK
9.24PEBock and Fuss, 1971Vertical value; LLK
9.24PEGleiter, Heilbronner, et al., 1970Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3+28.2 ± 0.2?EIOlmsted, Street, et al., 1964RDSH
C2H2+19. ± 0.4?EILifshitz and Reuben, 1969RDSH
C2H2+18.6?EINatalis and Franklin, 1965RDSH
C2H2+32.6 ± 0.2?EIOlmsted, Street, et al., 1964RDSH
C2H3+19. ± 0.4?EILifshitz and Reuben, 1969RDSH
C3H3+13.43?LSKuhlewind, Kiermeier, et al., 1986LBLHLM
C3H3+15.34 ± 0.06C3H3EISelim, 1976LLK
C3H3+16.90C3H3PEEland, Frey, et al., 1976LLK
C3H3+13.79C3H3PIRosenstock, Larkins, et al., 1973LLK
C3H3+14.7 ± 0.1?EILifshitz and Reuben, 1969RDSH
C4H2+17.5 ± 0.3?EILifshitz and Reuben, 1969RDSH
C4H3+18.48 ± 0.07H+C2H2EISelim, 1976LLK
C4H3+17.6 ± 0.1?EILifshitz and Reuben, 1969RDSH
C4H4+13.40C2H2LSKuhlewind, Kiermeier, et al., 1986T = 0K; LBLHLM
C4H4+13.9 ± 0.1C2H2EIRosenstock, McCulloh, et al., 1977LLK
C4H4+14.17 ± 0.08C2H2PIRosenstock, McCulloh, et al., 1977LLK
C4H4+14.85C2H2PEEland, Frey, et al., 1976LLK
C4H4+13.85C2H2PIRosenstock, Larkins, et al., 1973LLK
C4H4+14.1C2H2EIHickling and Jennings, 1970RDSH
C4H4+14.5 ± 0.2C2H2EILifshitz and Reuben, 1969RDSH
C5H3+15.7 ± 0.1CH3EILifshitz and Reuben, 1969RDSH
C6H+29. ± 2.?EILifshitz and Reuben, 1969RDSH
C6H4+12.93H2LSKuhlewind, Kiermeier, et al., 1986T = 0K; LBLHLM
C6H4+14.14 ± 0.08H2EISelim, 1976LLK
C6H4+12.94H2PIRosenstock, Larkins, et al., 1973LLK
C6H4+14.04 ± 0.06H2EIBentley, Johnstone, et al., 1973LLK
C6H4+14.09 ± 0.07H2EINatalis and Franklin, 1965RDSH
C6H5+13.12 ± 0.05HEVALKlippenstein, Faulk, et al., 1993T = 0K; LL
C6H5+12.90HLSKuhlewind, Kiermeier, et al., 1986T = 0K; LBLHLM
C6H5+13.7 ± 0.1HEIRosenstock, McCulloh, et al., 1977LLK
C6H5+13.78 ± 0.08HPIRosenstock, McCulloh, et al., 1977LLK
C6H5+14.56 ± 0.07HEISelim, 1976LLK
C6H5+12.94HPIRosenstock, Larkins, et al., 1973LLK
C6H5+13.97 ± 0.06HEIBentley, Johnstone, et al., 1973LLK
C6H5+14.1 ± 0.1HEIGross, 1972LLK
C6H5+13.80 ± 0.03HPISergeev, Akopyan, et al., 1970RDSH
C6H5+14.1 ± 0.1HEILifshitz and Reuben, 1969RDSH
C6H5+13.8 ± 0.1HPIBrehm, 1966RDSH
C6H71-43-24+14.2 ± 0.2H2EILifshitz and Reuben, 1969RDSH

De-protonation reactions

C6H5- + Hydrogen cation = Benzene

By formula: C6H5- + H+ = C6H6

Quantity Value Units Method Reference Comment
Δr1678.7 ± 2.1kJ/molG+TSDavico, Bierbaum, et al., 1995gas 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
Δr1678.5 ± 0.88kJ/molD-EAGunion, Gilles, et al., 1992gas phase; B
Δr1677. ± 10.kJ/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr1680. ± 42.kJ/molCIDTGraul and Squires, 1990gas phase; B
Δr1665. ± 23.kJ/molG+TSBohme and Young, 1971gas phase; B
Quantity Value Units Method Reference Comment
Δr1641.8 ± 1.7kJ/molIMREDavico, Bierbaum, et al., 1995gas 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
Δr1636. ± 8.4kJ/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr1632. ± 27.kJ/molIMRBBartmess and McIver Jr., 1979gas phase; B
Δr1628. ± 23.kJ/molIMRBBohme and Young, 1971gas 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.

Roux, Temprado, et al., 2008
Roux, M.V.; Temprado, M.; Chickos, J.S.; Nagano, Y., Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons, J. Phys. Chem. Ref. Data, 2008, 37, 4, 1855-1996. [all data]

Good and Smith, 1969
Good, W.D.; Smith, N.K., Enthalpies of combustion of toluene, benzene, cyclohexane, cyclohexene, methylcyclopentane, 1-methylcyclopentene, and n-hexane, J. Chem. Eng. Data, 1969, 14, 102-106. [all data]

Prosen, Gilmont, et al., 1945
Prosen, E.J.; Gilmont, R.; Rossini, F.D., Heats of combustion of benzene, toluene, ethyl-benzene, o-xylene, m-xylene, p-xylene, n-propylbenzene, and styrene, J. Res. NBS, 1945, 34, 65-70. [all data]

Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes, J. Res. NBS, 1946, 36, 455-461. [all data]

Landrieu, Baylocq, et al., 1929
Landrieu, P.; Baylocq, F.; Johnson, J.R., Etude thermochimique dans la serie furanique, Bull. Soc. Chim. France, 1929, 45, 36-49. [all data]

Oliver, Eaton, et al., 1948
Oliver, G.D.; Eaton, M.; Huffman, H.M., The heat capacity, heat of fusion and entropy of benzene, J. Am. Chem. Soc., 1948, 70, 1502-1505. [all data]

Huffman, Parks, et al., 1930
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Notes

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