p-Xylene
- Formula: C8H10
- Molecular weight: 106.1650
- IUPAC Standard InChIKey: URLKBWYHVLBVBO-UHFFFAOYSA-N
- CAS Registry Number: 106-42-3
- 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, 1,4-dimethyl-; p-Dimethylbenzene; p-Xylol; 1,4-Dimethylbenzene; 1,4-Xylene; p-Methyltoluene; para-Xylene; Chromar; Scintillar; 4-Methyltoluene; NSC 72419; UN 1307; 1,4-dimethyl-benzene ( p-xylene)
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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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
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: C3H9Si+ + C8H10 = (C3H9Si+ • C8H10)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 118. | kJ/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° | 147. | J/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° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
49.4 | 468. | PHPMS | Wojtyniak and Stone, 1986 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H6, Entropy change calculated or estimated; M |
By formula: C6H7N+ + C8H10 = (C6H7N+ • C8H10)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 59.4 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
24. | 322. | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; M |
By formula: C8H10+ + C8H10 = (C8H10+ • C8H10)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.3 | kJ/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 130. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: C9H12+ + C8H10 = (C9H12+ • C8H10)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 62.3 | kJ/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 120. | J/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: Cl- + C8H10 = (Cl- • C8H10)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 16.3 | kJ/mol | TDEq | French, Ikuta, et al., 1982 | gas phase; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
16. | 300. | PHPMS | French, Ikuta, et al., 1982 | gas phase; M |
By formula: Cr+ + C8H10 = (Cr+ • C8H10)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 180. ± 19. | kJ/mol | RAK | Lin and Dunbar, 1997 | RCD |
By formula: (Cr+ • C8H10) + C8H10 = (Cr+ • 2C8H10)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 212. ± 29. | kJ/mol | RAK | Lin and Dunbar, 1997 | 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.
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]
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]
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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