Carbon tetrabromide
- Formula: CBr4
- Molecular weight: 331.627
- IUPAC Standard InChIKey: HJUGFYREWKUQJT-UHFFFAOYSA-N
- CAS Registry Number: 558-13-4
- 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: Methane, tetrabromo-; Carbon bromide (CBr4); Methane tetrabromide; Tetrabromomethane; CBr4; Carbon bromide; Bromid uhlicity; UN 2516; NSC 6179
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Condensed phase thermochemistry data
Go To: Top, 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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | 7.03 ± 0.81 | kcal/mol | Ccb | Bickerton, Minas Da Piedade, et al., 1984 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -101.1 ± 0.79 | kcal/mol | Ccb | Bickerton, Minas Da Piedade, et al., 1984 | ALS |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
38.79 | 373. | Kurbatov, 1948 | T = 96 to 182°C. Mean Cp, three temperatures.; DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
34.87 | 298.15 | Bickerton, Minas Da Piedade, et al., 1984 | Cp given as 0.44 J/g*K.; DH |
30.750 | 300.6 | Marshall, Staveley, et al., 1956 | T = 22 to 84°C.; DH |
35.47 | 298. | Frederick and Hildebrand, 1939 | T = 298 to 423 K.; DH |
Gas phase ion energetics data
Go To: Top, Condensed phase 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:
L - Sharon G. Lias
Data compiled as indicated in comments:
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
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.31 ± 0.02 | eV | N/A | N/A | L |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
2.0598 | SI | Page and Goode, 1969 | The Magnetron method, lacking mass analysis, is not considered reliable. G3MP2B3 calculations indicate an EA of ca. 1.4 eV.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.3 ± 0.2 | EI | Kime, Driscoll, et al., 1987 | LBLHLM |
10.8 ± 0.3 | EI | Kaposi, Riedel, et al., 1976 | LLK |
10.31 ± 0.02 | PI | Werner, Tsai, et al., 1974 | LLK |
10.54 | PE | Dixon, Murrell, et al., 1971 | Vertical value; LLK |
10.39 | PE | Potts, Lempka, et al., 1970 | Vertical value; RDSH |
10.40 | PE | Green, Green, et al., 1970 | Vertical value; RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
Br+ | 14.5 ± 0.5 | ? | EI | Kaposi, Riedel, et al., 1976 | LLK |
Br+ | 18.1 ± 0.2 | ? | EI | Thorburn, 1965 | RDSH |
Br2+ | 17.2 ± 0.3 | ? | EI | Kaposi, Riedel, et al., 1976 | LLK |
Br2+ | 13.3 ± 0.1 | ? | EI | DeCorpo and Franklin, 1971 | LLK |
C+ | 23.0 ± 0.5 | ? | EI | Kaposi, Riedel, et al., 1976 | LLK |
C+ | 23.1 ± 0.4 | ? | EI | Thorburn, 1965 | RDSH |
CBr+ | 19.3 ± 0.4 | 3Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
CBr+ | 17.5 ± 0.2 | ? | EI | Thorburn, 1965 | RDSH |
CBr+ | 16.35 ± 0.13 | ? | EI | Reed and Snedden, 1958 | RDSH |
CBr2+ | 14.5 ± 0.3 | ? | EI | Kaposi, Riedel, et al., 1976 | LLK |
CBr2+ | 14.6 ± 0.3 | ? | EI | Thorburn, 1965 | RDSH |
CBr2+ | 12.30 ± 0.08 | ? | EI | Reed and Snedden, 1958 | RDSH |
CBr3+ | 11.4 ± 0.3 | Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
CBr3+ | 10.47 ± 0.02 | Br | PI | Werner, Tsai, et al., 1974 | LLK |
CBr3+ | 11.3 ± 0.2 | Br | EI | Thorburn, 1965 | RDSH |
CBr3+ | 9.95 ± 0.05 | Br | EI | Reed and Snedden, 1958 | RDSH |
References
Go To: Top, Condensed phase 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.
Bickerton, Minas Da Piedade, et al., 1984
Bickerton, J.; Minas Da Piedade, M.E.; Pilcher, G.,
Enthalpy of formation of tetrabromomethane by rotating-bomb calorimetry,
J. Chem. Thermodyn., 1984, 16, 661-668. [all data]
Kurbatov, 1948
Kurbatov, V.Ya.,
Heat capacity of liquids. 2. Heat capacity and the temperature dependence of heat capacity from halogen derivatives of acylic hydrocarbons,
Zh. Obshch. Kim., 1948, 18, 372-389. [all data]
Marshall, Staveley, et al., 1956
Marshall, J.G.; Staveley, L.A.K.; Hart, K.R.,
A thermodynamic investigation of the transitions in carbon tetrabromide and ammonium chloride,
Trans. Faraday Soc., 1956, 52, 19-31. [all data]
Frederick and Hildebrand, 1939
Frederick, K.J.; Hildebrand, J.H.,
Specific heats and heats of fusion and transition of carbon tetrabromide,
J. Am. Chem. Soc., 1939, 61, 1555-1558. [all data]
Page and Goode, 1969
Page, F.M.; Goode, G.C.,
Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]
Kime, Driscoll, et al., 1987
Kime, Y.J.; Driscoll, D.C.; Dowben, P.A.,
The stability of the carbon tetrahalide ions,
J. Chem. Soc. Faraday Trans. 2, 1987, 83, 403. [all data]
Kaposi, Riedel, et al., 1976
Kaposi, O.; Riedel, M.; Vass-Balthazar, K.; Sanchez, G.R.; Lelik, L.,
Mass-spectrometric determination of thermochemical data of CHBr3 and CBr4 by study of their electron impact and heterogeneous pyrolytic decompositions,
Acta Chim. Acad. Sci. Hung., 1976, 89, 221. [all data]
Werner, Tsai, et al., 1974
Werner, A.S.; Tsai, B.P.; Baer, T.,
Photoionization study of the ionization potentials fragmentation paths of the chlorinated methanes carbon tetrabromide,
J. Chem. Phys., 1974, 60, 3650. [all data]
Dixon, Murrell, et al., 1971
Dixon, R.N.; Murrell, J.N.; Narayan, B.,
The photoelectron spectra of the halomethanes,
Mol. Phys., 1971, 20, 611. [all data]
Potts, Lempka, et al., 1970
Potts, A.W.; Lempka, H.J.; Streets, D.G.; Price, W.C.,
Photoelectron spectra of the halides of elements in groups III, IV, V and VI,
Phil. Trans. Roy. Soc. (London), 1970, A268, 59. [all data]
Green, Green, et al., 1970
Green, J.C.; Green, M.L.H.; Joachim, P.J.; Orchard, A.F.; Turner, D.W.,
A study of the bonding in the group IV tetrahalides by photoelectron spectroscopy,
Phil. Trans. Roy. Soc. (London), 1970, A268, III. [all data]
Thorburn, 1965
Thorburn, R.,
Ionization and dissociation by electron impact in carbon tetrabromide,
Brit. J. Appl. Phys., 1965, 16, 1397. [all data]
DeCorpo and Franklin, 1971
DeCorpo, J.J.; Franklin, J.L.,
Electron affinities of the halogen molecules by dissociative electron attachment,
J. Chem. Phys., 1971, 54, 1885. [all data]
Reed and Snedden, 1958
Reed, R.I.; Snedden, W.,
Studies in electron impact methods. Part 2. The latent heat of sublimation of carbon,
J. Chem. Soc. Faraday Trans., 1958, 54, 301. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid EA Electron affinity IE (evaluated) Recommended ionization energy ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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