Benzene

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Gas phase thermochemistry data

Go To: Top, Phase change data, Henry's Law data, Gas phase ion energetics data, Ion clustering 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas19.8 ± 0.2kcal/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
Δfgas19.8kcal/molN/AGood and Smith, 1969Value computed using ΔfHliquid° value of 49.0±0.5 kj/mol from Good and Smith, 1969 and ΔvapH° value of 33.9 kj/mol from Prosen, Gilmont, et al., 1945.; DRB
Δfgas19.82 ± 0.12kcal/molCcbProsen, Gilmont, et al., 1945Hf by Prosen, Johnson, et al., 1946; ALS
Δfgas19.1kcal/molN/ALandrieu, Baylocq, et al., 1929Value computed using ΔfHliquid° value of 46.0 kj/mol from Landrieu, Baylocq, et al., 1929 and ΔvapH° value of 33.9 kj/mol from Prosen, Gilmont, et al., 1945.; DRB

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
7.95250.Thermodynamics Research Center, 1997GT
8.391100.
10.02150.
12.71200.
17.82273.15
19.70298.15
19.84300.
27.132400.
33.305500.
38.262600.
42.251700.
45.519800.
48.236900.
50.5281000.
52.4761100.
54.1401200.
55.5661300.
56.8001400.
57.8661500.
59.9691750.
61.4872000.
62.6082250.
63.4562500.
64.1092750.
64.6203000.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
22.30 ± 0.01333.15Todd S.S., 1978Please also see Montgomery J.B., 1942, Pitzer K.S., 1943, Scott D.W., 1947.; GT
22.90341.60
23.42 ± 0.01348.15
24.85 ± 0.01368.15
25.100370.
25.041371.20
26.00 ± 0.30388.
26.501390.
26.40 ± 0.30393.
27.230402.30
27.32 ± 0.02403.15
27.600410.
28.10 ± 0.30417.
28.40 ± 0.30428.
29.491436.15
29.62 ± 0.02438.15
30.30 ± 0.30463.
31.649471.10
31.77 ± 0.02473.15
31.40 ± 0.30481.
33.33 ± 0.02500.15
34.80 ± 0.02527.15

Phase change data

Go To: Top, Gas phase thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil353.3 ± 0.1KAVGN/AAverage of 147 out of 183 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus278.64 ± 0.08KAVGN/AAverage of 57 out of 69 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple278.5 ± 0.6KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Tc562.0 ± 0.8KAVGN/AAverage of 36 out of 41 values; Individual data points
Quantity Value Units Method Reference Comment
Pc48.3 ± 0.4atmAVGN/AAverage of 24 out of 26 values; Individual data points
Quantity Value Units Method Reference Comment
Vc0.25 ± 0.03l/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
ρc3.9 ± 0.2mol/lAVGN/AAverage of 12 values; Individual data points
Quantity Value Units Method Reference Comment
Δvap8.10 ± 0.03kcal/molAVGN/AAverage of 10 out of 11 values; Individual data points
Quantity Value Units Method Reference Comment
Δsub10.6kcal/molTE,MEKruif, 1980Based on data from 183. to 197. K.; AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
7.342353.3N/AMajer and Svoboda, 1985 
7.93320.N/ALubomska, Banas, et al., 2002Based on data from 305. to 345. K.; AC
8.51258. to 313.GCLiu and Dickhut, 1994AC
8.01311.EBAmbrose, Ewing, et al., 1990Based on data from 296. to 377. K.; AC
7.98307.CDong, Lin, et al., 1988AC
7.91314.CDong, Lin, et al., 1988AC
7.74324.CDong, Lin, et al., 1988AC
7.62332.CDong, Lin, et al., 1988AC
7.50344.CDong, Lin, et al., 1988AC
7.31353.CDong, Lin, et al., 1988AC
8.22294.AStephenson and Malanowski, 1987Based on data from 279. to 377. K.; AC
7.53368.AStephenson and Malanowski, 1987Based on data from 353. to 422. K.; AC
7.22435.AStephenson and Malanowski, 1987Based on data from 420. to 502. K.; AC
7.24516.AStephenson and Malanowski, 1987Based on data from 501. to 562. K.; AC
7.36352.N/ANatarajan, 1983AC
7.29361.N/ANatarajan, 1983AC
7.22366.N/ANatarajan, 1983AC
8.44343.N/ATsonopoulos and Wilson, 1983Based on data from 313. to 373. K.; AC
7.4350.N/ARao and Viswanath, 1977AC
7.89 ± 0.02313.CSvoboda, Veselý, et al., 1973AC
7.70 ± 0.02328.CSvoboda, Veselý, et al., 1973AC
7.60 ± 0.02333.CSvoboda, Veselý, et al., 1973AC
7.50 ± 0.02343.CSvoboda, Veselý, et al., 1973AC
7.39 ± 0.02353.CSvoboda, Veselý, et al., 1973AC
7.79 ± 0.1313.DSCMita, Imai, et al., 1971AC
7.8 ± 0.1328.DSCMita, Imai, et al., 1971AC
7.55 ± 0.1345.DSCMita, Imai, et al., 1971AC
8.15299.N/AForziati, Norris, et al., 1949Based on data from 284. to 354. K.; AC
8.15293.N/AYarym-Agaev, Fedos'ev, et al., 1949AC
8.15297.N/AThomson, 1946Based on data from 282. to 354. K.; AC
7.46294.N/AScott and Brickwedde, 1945AC
8.15303.MMWillingham, Taylor, et al., 1945Based on data from 288. to 354. K.; AC
7.98313.EBSmith, 1941Based on data from 298. to 373. K.; AC
8.25288.N/AStuckey and Saylor, 1940Based on data from 273. to 348. K.; AC

Enthalpy of vaporization

ΔvapH = A exp(-αTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kcal/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) 293. to 469.
A (kcal/mol) 11.33
α 0.1231
β 0.3602
Tc (K) 562.1
ReferenceMajer and Svoboda, 1985

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
333.4 to 373.54.720121660.652-1.461Eon, Pommier, et al., 1971Coefficents calculated by NIST from author's data.
297.9 to 318.0.1402039.165-261.236Deshpande and Pandya, 1967Coefficents calculated by NIST from author's data.
421.56 to 554.84.597911701.07320.806Kalafati, Rasskazov, et al., 1967Coefficents calculated by NIST from author's data.
287.70 to 354.074.012431203.835-53.226Williamham, Taylor, et al., 1945 

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
9.97258. to 273.N/ALiu and Dickhut, 1994AC
10.8264.AStephenson and Malanowski, 1987Based on data from 223. to 279. K. See also Ha, Morrison, et al., 1976.; AC
10.8278.N/AHessler, 1984AC
12.9 ± 0.2193.N/ADe Kruif and Van Ginkel, 1977AC
11.8 ± 0.1193.N/ADe Kruif and Van Ginkel, 1977AC
10.9279.MMJackowski, 1974Based on data from 221. to 268. K.; AC
10.5261.N/AJones, 1960AC
10.3229.N/AJones, 1960AC
10.7279.N/AMilazzo, 1956AC
11.1282.AStull, 1947Based on data from 263. to 270. K.; AC
9.2303.VWolf and Weghofer, 1938ALS
10.7273.N/Ade Boer, 1936See also Jackowski, 1974.; AC
10.3226.AMündel, 1913Based on data from 214. to 238. K.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Method Reference Comment
2.3581278.69N/AOliver, Eaton, et al., 1948DH
2.370278.65N/AZiegler and Andrews, 1942DH
2.36278.7CDomalski and Hearing, 1996See also Andrews, Lynn, et al., 1926 and Ziegler and Andrews, 1942.; AC
2.223279.1N/ASmith, 1979DH
2.139278.8N/APacor, 1967DH
2.375278.6N/ATschamler, 1948DH
2.343278.6N/AHuffman, Parks, et al., 1930DH
2.360278.55N/AAndrews, Lynn, et al., 1926DH
2.3901278.64N/AMaass and Walbauer, 1925DH

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
8.461278.69Oliver, Eaton, et al., 1948DH
8.506278.65Ziegler and Andrews, 1942DH
7.96279.1Smith, 1979DH
7.67278.8Pacor, 1967DH
8.411278.6Huffman, Parks, et al., 1930DH
8.48278.55Andrews, Lynn, et al., 1926DH
8.58278.64Maass and Walbauer, 1925DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Henry's Law data

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering 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 by: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
0.18 MN/A missing citation also measured solubilities in salt solutions.
0.164100.LN/A 
0.213600.MN/A 
0.21 MN/A 
0.18 XN/AValue given here as cited in missing citation.
0.17 MN/A 
0.193800.MN/A 
0.173900.XN/A 
0.18 QN/A missing citation give several references for the Henry's law constants but don't assign them to specific species.
0.164300.XN/A 
0.183200.XN/A 
0.182200.XN/A 
0.184000.XLeighton and Calo, 1981 
0.18 LN/A 
0.125300.XN/A 
0.194300.XN/A 
0.18 MMackay, Shiu, et al., 1979 
0.18 TMackay, Shiu, et al., 1979 
0.18 VN/A 
0.18 MN/A 
0.224200.MN/A 
0.164500.MN/A 
0.18 VBohon and Claussen, 1951 

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Ion clustering 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)179.3kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity173.4kcal/molN/AHunter and Lias, 1998HL

Proton affinity at 298K

Proton affinity (kcal/mol) Reference Comment
178.4Aue, Guidoni, et al., 2000Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM

Gas basicity at 298K

Gas basicity (review) (kcal/mol) Reference Comment
172.5Aue, 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
Δr401.22 ± 0.50kcal/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
Δr401.16 ± 0.21kcal/molD-EAGunion, Gilles, et al., 1992gas phase; B
Δr400.7 ± 2.5kcal/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr401. ± 10.kcal/molCIDTGraul and Squires, 1990gas phase; B
Δr398.0 ± 5.6kcal/molG+TSBohme and Young, 1971gas phase; B
Quantity Value Units Method Reference Comment
Δr392.40 ± 0.40kcal/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
Δr390.9 ± 2.0kcal/molTDEqMeot-ner and Sieck, 1986gas phase; B
Δr390.1 ± 6.5kcal/molIMRBBartmess and McIver Jr., 1979gas phase; B
Δr389.2 ± 5.5kcal/molIMRBBohme and Young, 1971gas phase; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law 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:
RCD - Robert C. Dunbar
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

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

By formula: Ag+ + C6H6 = (Ag+ • C6H6)

Quantity Value Units Method Reference Comment
Δr37.3 ± 1.7kcal/molCIDTRodgers and Armentrout, 2000RCD
Δr39.9 ± 4.5kcal/molRAKHo, Yang, et al., 1997RCD

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

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

Quantity Value Units Method Reference Comment
Δr39.9 ± 4.5kcal/molRAKHo, Yang, et al., 1997RCD

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

By formula: Al+ + C6H6 = (Al+ • C6H6)

Quantity Value Units Method Reference Comment
Δr35.1 ± 1.9kcal/molRAKDunbar, Klippenstein, et al., 1996RCD

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

By formula: Au+ + C6H6 = (Au+ • C6H6)

Quantity Value Units Method Reference Comment
Δr70.0kcal/molIMRBSchroeder, Hrusak, et al., 1995RCD

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

By formula: Bi+ + C6H6 = (Bi+ • C6H6)

Quantity Value Units Method Reference Comment
Δr<35.5kcal/molPDisWilley, Yeh, et al., 1992RCD

Bromine anion + Benzene = (Bromine anion • Benzene)

By formula: Br- + C6H6 = (Br- • C6H6)

Quantity Value Units Method Reference Comment
Δr9.0 ± 2.0kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr17.0cal/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Δr17.cal/mol*KN/APaul and Kebarle, 1991gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr2.5 ± 1.0kcal/molIMREPaul and Kebarle, 1991gas phase; B
Δr3.9 ± 2.6kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B

Free energy of reaction

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

CH6N+ + Benzene = (CH6N+ • Benzene)

By formula: CH6N+ + C6H6 = (CH6N+ • C6H6)

Quantity Value Units Method Reference Comment
Δr18.8kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr25.1cal/mol*KPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M

C2H7O+ + Benzene = (C2H7O+ • Benzene)

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

Quantity Value Units Method Reference Comment
Δr21.kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr25.cal/mol*KN/ADeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
8.7491.PHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated; M

C3H3+ + Benzene = (C3H3+ • Benzene)

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

Quantity Value Units Method Reference Comment
Δr9.0kcal/molHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr9.cal/mol*KHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr6.kcal/molHPMSField, Hamlet, et al., 1969gas phase; Entropy change is questionable; M

C3H9Si+ + Benzene = (C3H9Si+ • Benzene)

By formula: C3H9Si+ + C6H6 = (C3H9Si+ • C6H6)

Quantity Value Units Method Reference Comment
Δr23.9kcal/molPHPMSWojtyniak and Stone, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr34.7cal/mol*KPHPMSWojtyniak and Stone, 1986gas phase; M

C3H10N+ + Benzene = (C3H10N+ • Benzene)

By formula: C3H10N+ + C6H6 = (C3H10N+ • C6H6)

Quantity Value Units Method Reference Comment
Δr15.9kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr27.7cal/mol*KPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M

C4H4S+ + Benzene = (C4H4S+ • Benzene)

By formula: C4H4S+ + C6H6 = (C4H4S+ • C6H6)

Quantity Value Units Method Reference Comment
Δr13.kcal/molHPMSField, Hamlet, et al., 1969gas phase; M
Quantity Value Units Method Reference Comment
Δr23.cal/mol*KHPMSField, Hamlet, et al., 1969gas phase; M

C4H9+ + Benzene = (C4H9+ • Benzene)

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

Quantity Value Units Method Reference Comment
Δr22.kcal/molPHPMSSen Sharma, Ikuta, et al., 1982gas phase; forms protonated t-butylbenzene; M
Quantity Value Units Method Reference Comment
Δr49.cal/mol*KPHPMSSen Sharma, Ikuta, et al., 1982gas phase; forms protonated t-butylbenzene; M

C6H5Cl+ + Benzene = (C6H5Cl+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr14.0kcal/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

C6H6+ + Benzene = (C6H6+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr14. ± 8.kcal/molAVGN/AAverage of 7 out of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Δr28.8cal/mol*KPHPMSHiraoka, Fujimaki, et al., 1991gas phase; M
Δr27.cal/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Δr23.cal/mol*KHPMSField, Hamlet, et al., 1969gas phase; 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
Δr7.8 ± 0.5kcal/molPHPMSHiraoka, Fujimaki, et al., 1991gas phase; M
Quantity Value Units Method Reference Comment
Δr19.8cal/mol*KPHPMSHiraoka, Fujimaki, et al., 1991gas phase; 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
Δr7.0kcal/molPHPMSHiraoka, Fujimaki, et al., 1991gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AHiraoka, Fujimaki, et al., 1991gas phase; Entropy change calculated or estimated; M

(C6H6+ • 5Benzene) + Benzene = (C6H6+ • 6Benzene)

By formula: (C6H6+ • 5C6H6) + C6H6 = (C6H6+ • 6C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.5kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 6Benzene) + Benzene = (C6H6+ • 7Benzene)

By formula: (C6H6+ • 6C6H6) + C6H6 = (C6H6+ • 7C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.3kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 7Benzene) + Benzene = (C6H6+ • 8Benzene)

By formula: (C6H6+ • 7C6H6) + C6H6 = (C6H6+ • 8C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.0kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 8Benzene) + Benzene = (C6H6+ • 9Benzene)

By formula: (C6H6+ • 8C6H6) + C6H6 = (C6H6+ • 9C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr7.9kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 9Benzene) + Benzene = (C6H6+ • 10Benzene)

By formula: (C6H6+ • 9C6H6) + C6H6 = (C6H6+ • 10C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr7.8kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 10Benzene) + Benzene = (C6H6+ • 11Benzene)

By formula: (C6H6+ • 10C6H6) + C6H6 = (C6H6+ • 11C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr7.8kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 11Benzene) + Benzene = (C6H6+ • 12Benzene)

By formula: (C6H6+ • 11C6H6) + C6H6 = (C6H6+ • 12C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.0kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 12Benzene) + Benzene = (C6H6+ • 13Benzene)

By formula: (C6H6+ • 12C6H6) + C6H6 = (C6H6+ • 13C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.3kcal/molPDissBeck and Hecht, 1991gas phase; M

(C6H6+ • 13Benzene) + Benzene = (C6H6+ • 14Benzene)

By formula: (C6H6+ • 13C6H6) + C6H6 = (C6H6+ • 14C6H6)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr8.1kcal/molPDissBeck and Hecht, 1991gas phase; M

C6H6NO- + 2Benzene = C12H12NO-

By formula: C6H6NO- + 2C6H6 = C12H12NO-

Quantity Value Units Method Reference Comment
Δr17.5 ± 2.3kcal/molN/ALe Barbu, Schiedt, et al., 2002gas phase; Affinity is difference in EAs of lesser solvated species; B

C6H7+ + Benzene = (C6H7+ • Benzene)

By formula: C6H7+ + C6H6 = (C6H7+ • C6H6)

Quantity Value Units Method Reference Comment
Δr11.0kcal/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr24.cal/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas 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
Δr11.9kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr22.6cal/mol*KPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; M

C7H8+ + Benzene = (C7H8+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr12.2kcal/molMPIErnstberger, Krause, et al., 1990gas phase; M
Δr5.5kcal/molPIRuhl, Bisling, et al., 1986gas phase; from vIP of perpendicular dimer; M
Δr12.4kcal/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

C7H9N+ + Benzene = (C7H9N+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr12.3kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr4.6kcal/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
Δr10.0kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr2.2kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C9H12+ + Benzene = (C9H12+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr10.6kcal/molPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KPHPMSMeot-Ner (Mautner), Hamlet, et al., 1978gas phase; M

C9H13N+ + Benzene = (C9H13N+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr11.2kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr26.cal/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
2.6331.PHPMSMeot-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
Δr8.kcal/molPHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
3.0252.PHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

C11H10+ + Benzene = (C11H10+ • Benzene)

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr9.0kcal/molPHPMSEl-Shall and Meot-Ner (Mautner), 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr24.0cal/mol*KPHPMSEl-Shall and Meot-Ner (Mautner), 1987gas phase; M

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

By formula: Cd+ + C6H6 = (Cd+ • C6H6)

Quantity Value Units Method Reference Comment
Δr32.5 ± 4.5kcal/molRAKHo, Yang, et al., 1997RCD

Chlorine anion + Benzene = (Chlorine anion • Benzene)

By formula: Cl- + C6H6 = (Cl- • C6H6)

Quantity Value Units Method Reference Comment
Δr6.00 ± 0.46kcal/molN/ATschurl, Ueberfluss, et al., 2007gas phase; B
Δr9.4 ± 2.0kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Δr9.90kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr8.7kcal/molPHPMSPaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
Δr10.4kcal/molPHPMSSunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr17.9cal/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Δr17.cal/mol*KN/APaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
Δr17.1cal/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δr22.cal/mol*KN/ASunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr4.0 ± 2.6kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B
Δr3.8 ± 1.6kcal/molIMREChowdhury and Kebarle, 1986gas phase; B
Δr4.8 ± 2.0kcal/molIMRELarson and McMahon, 1984gas phase; B,M
Δr3.80kcal/molIMREFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
3.6300.PHPMSPaul and Kebarle, 1991gas phase; from Ph. D. thesis of S. Chowdhury, Entropy change calculated or estimated; M
3.8300.PHPMSChowdhury and Kebarle, 1986gas phase; M
3.8300.PHPMSSunner, Nishizawa, et al., 1981gas phase; Entropy change calculated or estimated; M

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

By formula: Co+ + C6H6 = (Co+ • C6H6)

Quantity Value Units Method Reference Comment
Δr61.2 ± 2.6kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
61.1 (+2.5,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

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

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

Quantity Value Units Method Reference Comment
Δr39.9 ± 3.3kcal/molCIDTMeyer, Khan, et al., 1995RCD
Quantity Value Units Method Reference Comment
Δr27.8cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
39.9 (+3.2,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M
27.0 (+1.0,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

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

By formula: Cr+ + C6H6 = (Cr+ • C6H6)

Quantity Value Units Method Reference Comment
Δr40.2kcal/molMIDLin, Chen, et al., 1997RCD
Δr39.2 ± 3.3kcal/molRAKLin and Dunbar, 1997RCD
Δr40.6 ± 2.4kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
40.6 (+2.3,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

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

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

Quantity Value Units Method Reference Comment
Δr50.7 ± 9.1kcal/molRAKLin and Dunbar, 1997RCD
Δr55.4 ± 4.3kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
55.3 (+4.4,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

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

By formula: Cs+ + C6H6 = (Cs+ • C6H6)

Quantity Value Units Method Reference Comment
Δr15.4 ± 1.2kcal/molCIDTAmicangelo and Armentrout, 2000RCD

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

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

Quantity Value Units Method Reference Comment
Δr14.0 ± 1.9kcal/molCIDTAmicangelo and Armentrout, 2000RCD

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

By formula: Cu+ + C6H6 = (Cu+ • C6H6)

Quantity Value Units Method Reference Comment
Δr52.1 ± 2.4kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
52.1 (+2.3,-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
Δr37.0 ± 2.9kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
37.1 (+2.8,-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
Δr15.30kcal/molTDAsHiraoka, Mizuse, et al., 1987gas phase; B,M
Quantity Value Units Method Reference Comment
Δr19.5cal/mol*KPHPMSHiraoka, Mizuse, et al., 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr9.40kcal/molTDAsHiraoka, Mizuse, et al., 1987gas phase; B

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

By formula: Fe+ + C6H6 = (Fe+ • C6H6)

Quantity Value Units Method Reference Comment
Δr47.1kcal/molRAKGapeev and Dunbar, 2002RCD
Δr49.5 ± 2.9kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
49.6 (+2.3,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

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

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

Quantity Value Units Method Reference Comment
Δr44.7 ± 3.8kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
44.7 (+3.9,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

NH4+ + Benzene = (NH4+ • Benzene)

By formula: H4N+ + C6H6 = (H4N+ • C6H6)

Quantity Value Units Method Reference Comment
Δr19.3kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M
Quantity Value Units Method Reference Comment
Δr23.3cal/mol*KPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; M

(NH4+ • Benzene) + Benzene = (NH4+ • 2Benzene)

By formula: (H4N+ • C6H6) + C6H6 = (H4N+ • 2C6H6)

Quantity Value Units Method Reference Comment
Δr17.0kcal/molPHPMSLiebman, Romm, et al., 1991gas phase; M
Quantity Value Units Method Reference Comment
Δr30.5cal/mol*KPHPMSLiebman, Romm, et al., 1991gas phase; M

(NH4+ • 2Benzene) + Benzene = (NH4+ • 3Benzene)

By formula: (H4N+ • 2C6H6) + C6H6 = (H4N+ • 3C6H6)

Quantity Value Units Method Reference Comment
Δr14.2kcal/molPHPMSLiebman, Romm, et al., 1991gas phase; M
Quantity Value Units Method Reference Comment
Δr32.9cal/mol*KPHPMSLiebman, Romm, et al., 1991gas phase; M

Iodide + Benzene = (Iodide • Benzene)

By formula: I- + C6H6 = (I- • C6H6)

Quantity Value Units Method Reference Comment
Δr6.1 ± 2.0kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B,M
Δr9.1 ± 1.0kcal/molTDAsCaldwell, Masucci, et al., 1989gas phase; B,M
Quantity Value Units Method Reference Comment
Δr14.2cal/mol*KPHPMSHiraoka, Mizuse, et al., 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr1.8 ± 2.6kcal/molTDAsHiraoka, Mizuse, et al., 1988gas phase; B

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

By formula: K+ + C6H6 = (K+ • C6H6)

Quantity Value Units Method Reference Comment
Δr17.5 ± 0.9kcal/molCIDTAmicangelo and Armentrout, 2000RCD
Δr19.2kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr24.6cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; M

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

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

Quantity Value Units Method Reference Comment
Δr16.1 ± 1.7kcal/molCIDTAmicangelo and Armentrout, 2000RCD
Δr18.8kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr33.9cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; M

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

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

Quantity Value Units Method Reference Comment
Δr14.5kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr32.7cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; M

(Potassium ion (1+) • 3Benzene) + Benzene = (Potassium ion (1+) • 4Benzene)

By formula: (K+ • 3C6H6) + C6H6 = (K+ • 4C6H6)

Quantity Value Units Method Reference Comment
Δr12.6kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr41.4cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; 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
Δr14.4kcal/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
Δr30.1cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; From thermochemical cycle,switching reaction(K+ 3H2O)C6H6, Searles and Kebarle, 1969; 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
Δr12.8kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 3H2O)C6H6; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr33.7cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+ 3H2O)C6H6; 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
Δr16.8kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)2H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr27.1cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)2H2O; 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
Δr13.4kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)3H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr24.3cal/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
Δr12.6kcal/molHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M
Quantity Value Units Method Reference Comment
Δr27.6cal/mol*KHPMSSunner, Nishizawa, et al., 1981gas phase; switching reaction(K+)4H2O; Searles and Kebarle, 1969; M

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

By formula: Li+ + C6H6 = (Li+ • C6H6)

Quantity Value Units Method Reference Comment
Δr38.5 ± 3.2kcal/molCIDTAmicangelo and Armentrout, 2000RCD
Δr37.9kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
Δr36.5kcal/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
Δr27.5cal/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
Δr29.7kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M

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

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

Quantity Value Units Method Reference Comment
Δr24.9 ± 1.7kcal/molCIDTAmicangelo and Armentrout, 2000RCD

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

By formula: Mg+ + C6H6 = (Mg+ • C6H6)

Quantity Value Units Method Reference Comment
Δr32.0 ± 2.3kcal/molCIDTAndersen, Muntean, et al., 2000RCD
Δr37.0kcal/molRAKGapeev and Dunbar, 2000RCD

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

By formula: Mn+ + C6H6 = (Mn+ • C6H6)

Quantity Value Units Method Reference Comment
Δr34.4kcal/molMIDLin, Chen, et al., 1997RCD
Δr31.8 ± 2.2kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
31.8 (+2.1,-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
Δr48.5 ± 3.8kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
48.4 (+3.9,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Nitric oxide anion + Benzene = C6H6NO-

By formula: NO- + C6H6 = C6H6NO-

Quantity Value Units Method Reference Comment
Δr9.5 ± 2.3kcal/molN/ALe Barbu, Schiedt, et al., 2002gas phase; Affinity is difference in EAs of lesser solvated species; B

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

By formula: NO- + C6H6 = (NO- • C6H6)

Quantity Value Units Method Reference Comment
Δr41.1kcal/molICRReents and Freiser, 1981gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978; M

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

By formula: Na+ + C6H6 = (Na+ • C6H6)

Quantity Value Units Method Reference Comment
Δr22.8 ± 1.4kcal/molCIDCAmicangelo and Armentrout, 2001Anchor NH3=24.41; RCD
Δr21.1 ± 1.2kcal/molCIDTAmicangelo and Armentrout, 2000RCD
Δr21.1 ± 1.1kcal/molCIDTArmentrout and Rodgers, 2000RCD
Δr28.0kcal/molHPMSGuo, Purnell, et al., 1990gas phase; M
Quantity Value Units Method Reference Comment
Δr31.2cal/mol*KHPMSGuo, Purnell, et al., 1990gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
15.7298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

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

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

Quantity Value Units Method Reference Comment
Δr20. ± 1.kcal/molAVGN/AAverage of 7 values; Individual data points

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

By formula: Ni+ + C6H6 = (Ni+ • C6H6)

Quantity Value Units Method Reference Comment
Δr58.1 ± 2.6kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
58.1 (+2.5,-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
Δr35.1 ± 2.9kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
35.1 (+2.8,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

Oxygen anion + Benzene = C6H6O2-

By formula: O2- + C6H6 = C6H6O2-

Quantity Value Units Method Reference Comment
Δr14.1 ± 2.3kcal/molN/ALe Barbu, Schiedt, et al., 2002gas phase; Affinity is difference in EAs of lesser solvated species; B

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

By formula: Pb+ + C6H6 = (Pb+ • C6H6)

Quantity Value Units Method Reference Comment
Δr26.2kcal/molPHPMSGuo, Purnell, et al., 1990gas phase; M
Quantity Value Units Method Reference Comment
Δr21.6cal/mol*KPHPMSGuo, Purnell, et al., 1990gas phase; M

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

By formula: Rb+ + C6H6 = (Rb+ • C6H6)

Quantity Value Units Method Reference Comment
Δr16.4 ± 0.9kcal/molCIDTAmicangelo and Armentrout, 2000RCD

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

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

Quantity Value Units Method Reference Comment
Δr15.0 ± 1.9kcal/molCIDTAmicangelo and Armentrout, 2000RCD

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

By formula: Ti+ + C6H6 = (Ti+ • C6H6)

Quantity Value Units Method Reference Comment
Δr50.9kcal/molRAKGapeev and Dunbar, 2002RCD
Δr61.9 ± 2.2kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
61.8 (+2.1,-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
Δr60.5 ± 4.3kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
60.4 (+4.4,-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>55.kcal/molRAKGapeev and Dunbar, 2002RCD
Δr55.9 ± 2.4kcal/molCIDTMeyer, Khan, et al., 1995RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
55.8 (+2.3,-0.) CIDMeyer, Khan, et al., 1995gas phase; guided ion beam CID; M

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

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

Quantity Value Units Method Reference Comment
Δr58.8 ± 4.4kcal/molCIDMeyer, Khan, et al., 1995gas phase; ΔrH(0k), guided ion beam CID; M,RCD

(V- • Benzene, fluoro-) + Benzene = (V- • Benzene • Benzene, fluoro-)

By formula: (V- • C6H5F) + C6H6 = (V- • C6H6 • C6H5F)

Quantity Value Units Method Reference Comment
Δr3. ± 15.kcal/molN/AJudai, Hirano, et al., 1997gas phase; B

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, Ion clustering 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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Notes

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