Toluene
- Formula: C7H8
- Molecular weight: 92.1384
- IUPAC Standard InChIKey: YXFVVABEGXRONW-UHFFFAOYSA-N
- CAS Registry Number: 108-88-3
- 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: Benzene, methyl; Methacide; Methylbenzene; Methylbenzol; Phenylmethane; Antisal 1a; Toluol; Methane, phenyl-; NCI-C07272; Tolueen; Toluen; Toluolo; Rcra waste number U220; Tolu-sol; UN 1294; Dracyl; Monomethyl benzene; CP 25; NSC 406333; methylbenzene (toluene)
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Ion clustering data
Go To: Top, 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: Br- + C7H8 = (Br- • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.6 ± 1.8 | kcal/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff measured at 303 K, corrected to 423 K, ΔSaff taken as that of PhNO2..Br-; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20. | cal/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 0.1 ± 1.0 | kcal/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff measured at 303 K, corrected to 423 K, ΔSaff taken as that of PhNO2..Br-; B |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.1 | 423. | PHPMS | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: C3H9Si+ + C7H8 = (C3H9Si+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.4 | kcal/mol | PHPMS | Stone and Stone, 1991 | gas phase; forms pi complex; M |
ΔrH° | 31.3 | kcal/mol | PHPMS | Stone and Stone, 1991 | gas phase; toluene D8, forms pi complex; M |
ΔrH° | 26.6 | kcal/mol | PHPMS | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H6, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 34.9 | cal/mol*K | N/A | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H6, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
10.3 | 468. | PHPMS | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H6, Entropy change calculated or estimated; M |
By formula: C4H9+ + C7H8 = (C4H9+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.6 | kcal/mol | PHPMS | Stone and Stone, 1991 | gas phase; toluene D8, forms protonated t-butyltoluene; M |
ΔrH° | 29.1 | kcal/mol | PHPMS | Stone and Stone, 1991 | gas phase; forms protomated t-butyltoluene; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 54.5 | cal/mol*K | PHPMS | Stone and Stone, 1991 | gas phase; toluene D8, forms protonated t-butyltoluene; M |
ΔrS° | 54.6 | cal/mol*K | PHPMS | Stone and Stone, 1991 | gas phase; forms protomated t-butyltoluene; M |
By formula: C6H7N+ + C7H8 = (C6H7N+ • C7H8)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.7 | kcal/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 26.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
By formula: C7H8+ + C7H8 = (C7H8+ • C7H8)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14.5 | kcal/mol | MPI | Ernstberger, Krause, et al., 1990 | gas phase; M |
ΔrH° | 5.4 | kcal/mol | PI | Ruhl, Bisling, et al., 1986 | gas phase; from vIP of perpendicular dimer; M |
ΔrH° | 16.0 | kcal/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 29. | cal/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: C9H12+ + C7H8 = (C9H12+ • C7H8)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.0 | kcal/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27. | cal/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: Cl- + C7H8 = (Cl- • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 4.00 | kcal/mol | TDEq | French, Ikuta, et al., 1982 | gas phase; B |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
4.0 | 300. | PHPMS | French, Ikuta, et al., 1982 | gas phase; M |
By formula: Cr+ + C7H8 = (Cr+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.1 ± 3.3 | kcal/mol | RAK | Lin and Dunbar, 1997 | RCD |
By formula: (Cr+ • C7H8) + C7H8 = (Cr+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 53.1 ± 9.1 | kcal/mol | RAK | Lin and Dunbar, 1997 | RCD |
By formula: Cs+ + C7H8 = (Cs+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15.3 ± 1.1 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: (Cs+ • C7H8) + C7H8 = (Cs+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14.7 ± 1.0 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: I- + C7H8 = (I- • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.0 ± 1.0 | kcal/mol | TDAs | Caldwell, Masucci, et al., 1989 | gas phase; B,M |
By formula: K+ + C7H8 = (K+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.1 ± 1.2 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: (K+ • C7H8) + C7H8 = (K+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.9 ± 1.1 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: Li+ + C7H8 = (Li+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.7 ± 4.0 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: (Li+ • C7H8) + C7H8 = (Li+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.8 ± 0.7 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: NO- + C7H8 = (NO- • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.2 | kcal/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: Na+ + C7H8 = (Na+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 26.8 ± 0.8 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: (Na+ • C7H8) + C7H8 = (Na+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20.7 ± 0.5 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: Rb+ + C7H8 = (Rb+ • C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.0 ± 1.0 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
By formula: (Rb+ • C7H8) + C7H8 = (Rb+ • 2C7H8)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.2 ± 1.0 | kcal/mol | CIDT | Amunugama and Rodgers, 2002 | RCD |
References
Go To: Top, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Paul and Kebarle, 1991
Paul, G.J.C.; Kebarle, P.,
Stabilities of Complexes of Br- with Substituted Benzenes (SB) Based on Determinations of the Gas-Phase Equilibria Br- + SB = (BrSB)-,
J. Am. Chem. Soc., 1991, 113, 4, 1148, https://doi.org/10.1021/ja00004a014
. [all data]
Stone and Stone, 1991
Stone, J.M.; Stone, J.A.,
A High Pressure Mass Spectrometric Study of the Binding of (CH3)3Si+ and (CH3)3C+ to Toluene and Benzene,
Int. J. Mass Spectrom. Ion Proc., 1991, 109, 247, https://doi.org/10.1016/0168-1176(91)85107-W
. [all data]
Wojtyniak and Stone, 1986
Wojtyniak, A.C.M.; Stone, A.J.,
A High-Pressure Mass Spectrometric Study of the Bonding of Trimethylsilylium to Oxygen and Aromatic Bases,
Can. J. Chem., 1986, 74, 59. [all data]
Meot-Ner (Mautner) and El-Shall, 1986
Meot-Ner (Mautner), M.; El-Shall, M.S.,
Ionic Charge Transfer Complexes. 1. Cationic Complexes with Delocalized and Partially Localized pi Systems,
J. Am. Chem. Soc., 1986, 108, 15, 4386, https://doi.org/10.1021/ja00275a026
. [all data]
Ernstberger, Krause, et al., 1990
Ernstberger, B.; Krause, H.; Kiermeier, A.; Neusser, H.J.,
Multiphoton ionization and dissociation of mixed van der Waals clusters in a linear reflectron time-of-flight mass spectrometer,
J. Chem. Phys., 1990, 92, 9, 5285, https://doi.org/10.1063/1.458603
. [all data]
Ruhl, Bisling, et al., 1986
Ruhl, E.; Bisling, P.G.F.; Brutschy, B.; Baumgartel, H.,
Photoionization of Aromatic van der Waals Complexes in a Supersonic Jet,
Chem. Phys. Lett., 1986, 126, 3-4, 232, https://doi.org/10.1016/S0009-2614(86)80075-6
. [all data]
Meot-Ner (Mautner), Hamlet, et al., 1978
Meot-Ner (Mautner), M.; Hamlet, P.; Hunter, E.P.; Field, F.H.,
Bonding Energies in Association Ions of Aromatic Molecules. Correlations with Ionization Energies,
J. Am. Chem. Soc., 1978, 100, 17, 5466, https://doi.org/10.1021/ja00485a034
. [all data]
French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P.,
Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-,
Can. J. Chem., 1982, 60, 1907. [all data]
Lin and Dunbar, 1997
Lin, C.-Y.; Dunbar, R.C.,
Radiative Association Kinetics and Binding Energies of Chromium Ions with Benzene and Benzene Derivatives,
Organometallics, 1997, 16, 12, 2691, https://doi.org/10.1021/om960949n
. [all data]
Amunugama and Rodgers, 2002
Amunugama, R.; Rodgers, M.T.,
Influence of substituents on cation-pi interactions. 1. Absolute binding energies of alkali metal cation-toluene complexes determined by threshold collision-induced dissociation and theoretical studies,
J. Phys. Chem. A, 2002, 106, 22, 5529, https://doi.org/10.1021/jp014307b
. [all data]
Caldwell, Masucci, et al., 1989
Caldwell, G.W.; Masucci, J.A.; Ikonomou, M.G.,
Negative Ion Chemical Ionization Mass Spectrometry - Binding of Molecules to Bromide and Iodide Anions,
Org. Mass Spectrom., 1989, 24, 1, 8, https://doi.org/10.1002/oms.1210240103
. [all data]
Reents and Freiser, 1981
Reents, W.D.; Freiser, B.S.,
Gas-Phase Binding Energies and Spectroscopic Properties of NO+ Charge-Transfer Complexes,
J. Am. Chem. Soc., 1981, 103, 2791. [all data]
Farid and McMahon, 1978
Farid, R.; McMahon, T.B.,
Gas-Phase Ion-Molecule Reactions of Alkyl Nitrites by Ion Cyclotron Resonance Spectroscopy,
Int. J. Mass Spectrom. Ion Phys., 1978, 27, 2, 163, https://doi.org/10.1016/0020-7381(78)80037-0
. [all data]
Notes
Go To: Top, Ion clustering data, References
- Symbols used in this document:
T Temperature 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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