Benzene, 1,3-difluoro-
- Formula: C6H4F2
- Molecular weight: 114.0928
- IUPAC Standard InChIKey: UEMGWPRHOOEKTA-UHFFFAOYSA-N
- CAS Registry Number: 372-18-9
- 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. - Other names: Benzene, m-difluoro-; m-Difluorobenzene; 1,3-Difluorobenzene; meta-Difluorobenzene
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Ion clustering data
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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: C6H4F2+ + C6H4F2 = (C6H4F2+ • C6H4F2)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.2 | kcal/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27. | cal/mol*K | N/A | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 5.2 | kcal/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; Entropy change calculated or estimated; M |
By formula: C6H6+ + C6H4F2 = (C6H6+ • C6H4F2)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.9 | kcal/mol | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 26. | cal/mol*K | PHPMS | Meot-Ner (Mautner), Hamlet, et al., 1978 | gas phase; M |
By formula: Cl- + C6H4F2 = (Cl- • C6H4F2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14.6 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22.6 | cal/mol*K | N/A | Larson and McMahon, 1984 | gas phase; switching reaction(Cl-)ClCOOCH3, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.8 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1984 | gas phase; B,M |
ΔrG° | 7.7 ± 1.0 | kcal/mol | TDEq | French, Ikuta, et al., 1982 | gas phase; B |
By formula: Cr+ + C6H4F2 = (Cr+ • C6H4F2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 32.0 | kcal/mol | RAK | Ryzhov, 1999 | 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.
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]
Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria,
J. Am. Chem. Soc., 1984, 106, 517. [all data]
Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B.,
Gas phase negative ion chemistry of alkylchloroformates,
Can. J. Chem., 1984, 62, 675. [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]
Ryzhov, 1999
Ryzhov, V.,
Binding Energies of Chromium Cations with Fluorobenzenes from Radiative Association Kinetics,
Int. J. Mass Spectrom., 1999, 185/186/187, 913. [all data]
Notes
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- Symbols used in this document:
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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