Methane, tribromo-
- Formula: CHBr3
- Molecular weight: 252.731
- IUPAC Standard InChIKey: DIKBFYAXUHHXCS-UHFFFAOYSA-N
- CAS Registry Number: 75-25-2
- 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: Bromoform; Methenyl tribromide; Tribromomethane; CHBr3; Bromoforme; Bromoformio; NCI-C55130; Tribrommethaan; Tribrommethan; Tribromometan; Rcra waste number U225; UN 2515; NSC 8019
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 13.2 ± 0.79 | kcal/mol | Ccr | Papina, Kolesov, et al., 1982 |
Reaction thermochemistry 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:
MS - José A. Martinho Simões
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C8H6MoO3 (solution) + (solution) =
(solution) +
(solution)
By formula: C8H6MoO3 (solution) + CBr4 (solution) = C8H5BrMoO3 (solution) + CHBr3 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -34.4 ± 2.0 | kcal/mol | RSC | Nolan, López de la Vega, et al., 1986 | solvent: Tetrahydrofuran; The enthalpy of solution of Mo(Cp)(CO)3(H)(cr) was measured as 2.1 ± 0.1 kcal/mol Nolan, López de la Vega, et al., 1986, 2. Reaction temperature: 323 K; MS |
CBr3- + =
By formula: CBr3- + H+ = CHBr3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 349.7 ± 2.2 | kcal/mol | G+TS | Born, Ingemann, et al., 2000 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 342.0 ± 2.0 | kcal/mol | IMRE | Born, Ingemann, et al., 2000 | gas phase; B |
By formula: C2HBr3O + HNaO = CHNaO2 + CHBr3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -22.40 | kcal/mol | Cm | Pritchard and Skinner, 1950 | liquid phase; Heat of hydrolysis; ALS |
By formula: CHBr3 + Br2 = HBr + CBr4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -1.7 ± 0.7 | kcal/mol | Eqk | King, Golden, et al., 1971 | gas phase; ALS |
C10H12Mo (cr) + 2 (cr) = C10H10Br2Mo (cr) + 2
(l)
By formula: C10H12Mo (cr) + 2CBr4 (cr) = C10H10Br2Mo (cr) + 2CHBr3 (l)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -70.9 ± 1.1 | kcal/mol | RSC | Calado, Dias, et al., 1980 | MS |
C10H12W (cr) + 2 (cr) = C10H10Br2W (cr) + 2
(l)
By formula: C10H12W (cr) + 2CBr4 (cr) = C10H10Br2W (cr) + 2CHBr3 (l)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -72.30 ± 0.53 | kcal/mol | RSC | Calado, Dias, et al., 1980 | MS |
Gas phase ion energetics 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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
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
LL - Sharon G. Lias and Joel F. Liebman
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.50 ± 0.02 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.5 | PE | Von Niessen, Asbrink, et al., 1982 | LBLHLM |
10.7 ± 0.3 | EI | Kaposi, Riedel, et al., 1976 | LLK |
10.48 ± 0.02 | PI | Tsai, Baer, et al., 1975 | LLK |
10.51 ± 0.02 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
10.47 | PE | Nicholson and Rademacher, 1974 | Vertical value; LLK |
10.47 | PE | Dixon, Murrell, et al., 1971 | Vertical value; LLK |
10.47 | PE | Potts, Lempka, et al., 1970 | Vertical value; RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
Br+ | 15.4 ± 0.4 | CHBr2 | EI | Kaposi, Riedel, et al., 1976 | LLK |
HBr+ | 14.7 ± 0.3 | CBr2 | EI | Kaposi, Riedel, et al., 1976 | LLK |
Br2+ | 15.1 ± 0.3 | CHBr | EI | Kaposi, Riedel, et al., 1976 | LLK |
C+ | 23.6 ± 0.5 | H+3Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
C+ | 23.55 ± 0.05 | ? | EI | Reed and Snedden, 1956 | RDSH |
CBr+ | 16.2 ± 0.4 | HBr+Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
CBr2+ | 13.7 ± 0.2 | HBr | EI | Kaposi, Riedel, et al., 1976 | LLK |
CBr3+ | 13.0 ± 0.3 | H | EI | Kaposi, Riedel, et al., 1976 | LLK |
CH+ | 20.5 ± 0.5 | 3Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
CH+ | 21.70 ± 0.05 | ? | EI | Reed and Snedden, 1956 | RDSH |
CHBr+ | 17.4 ± 0.4 | 2Br | EI | Kaposi, Riedel, et al., 1976 | LLK |
CHBr2+ | 10.53 | Br | EI | Holmes, Lossing, et al., 1988 | LL |
CHBr2+ | 10.70 ± 0.02 | Br | PI | Tsai, Baer, et al., 1975 | LLK |
CHBr2+ | 10.80 ± 0.01 | Br | EI | Reed and Snedden, 1956 | RDSH |
De-protonation reactions
CBr3- + =
By formula: CBr3- + H+ = CHBr3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 349.7 ± 2.2 | kcal/mol | G+TS | Born, Ingemann, et al., 2000 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 342.0 ± 2.0 | kcal/mol | IMRE | Born, Ingemann, et al., 2000 | gas phase; B |
Gas Chromatography
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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | OV-1 | 100. | 870. | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Packed | OV-1 | 125. | 882. | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Packed | OV-1 | 75. | 859. | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Packed | SE-30 | 150. | 895. | Tiess, 1984 | Ar, Gas Chrom Q (80-100 mesh); Column length: 3. m |
Packed | Apolane | 70. | 873.1 | Riedo, Fritz, et al., 1976 | He, Chromosorb; Column length: 2.4 m |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | SP-1000 | 100. | 1456.67 | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Packed | SP-1000 | 125. | 1467.06 | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Packed | SP-1000 | 75. | 1441.6 | Castello and Gerbino, 1988 | He, Chromosorb W DMCS; Column length: 3. m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-1 | 845.2 | Sun and Stremple, 2003 | 30. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 40. C; Tend: 325. C |
Capillary | DB-5 | 892.1 | Xu, van Stee, et al., 2003 | 30. m/0.25 mm/1. μm, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C |
Capillary | DB-1 | 852.7 | Helmig, Pollock, et al., 1996 | 30. m/0.25 mm/1. μm, 6. K/min; Tstart: -50. C; Tend: 180. C |
Capillary | SE-54 | 892. | Weber, 1986 | 25. m/0.31 mm/0.17 μm, H2, 2. K/min; Tstart: 35. C |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-1 | 853. | Peters, de Leer, et al., 1994 | 25. m/0.2 mm/0.33 μm, He, 50. C @ 5. min, 8. K/min, 300. C @ 10. min |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 877. | Zenkevich, 2001 | Program: not specified |
Capillary | SPB-1 | 875. | Flanagan, Streete, et al., 1997 | 60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C |
Capillary | SPB-1 | 875. | Strete, Ruprah, et al., 1992 | 60. m/0.53 mm/5.0 μm, Helium; Program: 40 0C (6 min) 5 0C/min -> 80 0C 10 0C/min -> 200 0C |
Capillary | SPB-1 | 911. | Strete, Ruprah, et al., 1992 | 60. m/0.53 mm/5.0 μm, Helium; Program: not specified |
Capillary | OV-1 | 852. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 852. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 852. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 855. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 860. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1418. | le Pape, Grua-Priol, et al., 2004 | 30. m/0.32 mm/0.5 μm, He; Program: 40C => 1C/min => 57C => 15C/min => 230C (5min) |
Capillary | Superox 0.6; Carbowax 20M | 1407. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Capillary | Carbowax 400, Carbowax 20M, Carbowax 1540, Carbowax 4000, Superox 06, PEG 20M, etc. | 1407. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Papina, Kolesov, et al., 1982
Papina, T.S.; Kolesov, V.P.; Golovanova, Yu.G.,
The standard enthalpy of formation of bromoform,
Russ. J. Phys. Chem. (Engl. Transl.), 1982, 56, 1666-1668. [all data]
Nolan, López de la Vega, et al., 1986
Nolan, S.P.; López de la Vega, R.; Hoff, C.D.,
J. Organometal. Chem., 1986, 315, 187. [all data]
Nolan, López de la Vega, et al., 1986, 2
Nolan, S.P.; López de la Vega, R.; Hoff, C.D.,
Organometallics, 1986, 5, 2529. [all data]
Born, Ingemann, et al., 2000
Born, M.; Ingemann, S.; Nibbering, N.M.M.,
Thermochemical properties of halogen-substituted methanes, methyl radicals, and carbenes in the gas phase,
Int. J. Mass Spectrom., 2000, 194, 2-3, 103-113, https://doi.org/10.1016/S1387-3806(99)00125-6
. [all data]
Pritchard and Skinner, 1950
Pritchard, H.O.; Skinner, H.A.,
The heats of hydrolysis of chloral and bromal, and the C-C bond dissociation energies in chloral and bromal,
J. Am. Chem. Soc., 1950, 1928-1931. [all data]
King, Golden, et al., 1971
King, K.D.; Golden, D.M.; Benson, S.W.,
Kinetics and thermochemistry of the gas-phase bromination of bromoform. The C-H bond dissociation energy in CHBr3 and the C-Br bond dissociation energy in CBr4,
J. Phys. Chem., 1971, 75, 987-989. [all data]
Calado, Dias, et al., 1980
Calado, J.C.G.; Dias, A.R.; Martinho Simões, J.A.,
J. Organometal. Chem., 1980, 195, 203. [all data]
Von Niessen, Asbrink, et al., 1982
Von Niessen, W.; Asbrink, L.; Bieri, G.,
30.4 nm He(II) Photoelectron spectra of organic molecules. Part VI. Halogeno-compounds (C,H,X: X = Cl, Br, I),
J. Electron Spectrosc. Relat. Phenom., 1982, 26, 173. [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]
Tsai, Baer, et al., 1975
Tsai, B.P.; Baer, T.; Werner, A.S.; Lin, S.F.,
A photoelectron-photoion coincidence study of the ionization and fragment appearance potentials of bromo- and iodomethanes,
J. Phys. Chem., 1975, 79, 570. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Nicholson and Rademacher, 1974
Nicholson, D.G.; Rademacher, P.,
Photoelectron spectra and electronic structures of antimony(III) halides,
Acta Chem. Scand. Ser. A:, 1974, 28, 1136. [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]
Reed and Snedden, 1956
Reed, R.I.; Snedden, W.,
Studies in electron impact methods. Part 6.-The formation of the methine and carbon ions,
J. Chem. Soc. Faraday Trans., 1956, 55, 876. [all data]
Holmes, Lossing, et al., 1988
Holmes, J.L.; Lossing, F.P.; McFarlane, R.A.,
Stabilization energy and positional effects in halogen-substituted alkyl ions.,
Int. J. Mass Spectrom. Ion Phys., 1988, 86, 209. [all data]
Castello and Gerbino, 1988
Castello, G.; Gerbino, T.C.,
Effect of Temperature on the Gas Chromatographic Separation of Halogenated Compounds on Polar and Non-Polar Stationary Phases,
J. Chromatogr., 1988, 437, 33-45, https://doi.org/10.1016/S0021-9673(00)90369-8
. [all data]
Tiess, 1984
Tiess, D.,
Gaschromatographische Retentionsindices von 125 leicht- bis mittelflüchtigen organischen Substanzen toxikologisch-analytischer Relevanz auf SE-30,
Wiss. Z. Wilhelm-Pieck-Univ. Rostock Math. Naturwiss. Reihe, 1984, 33, 6-9. [all data]
Riedo, Fritz, et al., 1976
Riedo, F.; Fritz, D.; Tarján, G.; Kováts, E.Sz.,
A tailor-made C87 hydrocarbon as a possible non-polar standard stationary phase for gas chromatography,
J. Chromatogr., 1976, 126, 63-83, https://doi.org/10.1016/S0021-9673(01)84063-2
. [all data]
Sun and Stremple, 2003
Sun, G.; Stremple, P.,
Retention index characterization of flavor, fragrance, and many other compounds on DB-1 and DB-XLB, 2003, retrieved from http://www.chem.agilent.com/cag/cabu/pdf/b-0279.pdf. [all data]
Xu, van Stee, et al., 2003
Xu, X.; van Stee, L.L.P.; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J.; Brinkman, U.A.Th.; Lelieveld, J.,
Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere,
Atmos. Chem. Phys., 2003, 3, 3, 665-682, https://doi.org/10.5194/acp-3-665-2003
. [all data]
Helmig, Pollock, et al., 1996
Helmig, D.; Pollock, W.; Greenberg, J.; Zimmerman, P.,
Gas chromatography mass spectrometry analysis of volatile organic trace gases at Mauna Loa Observatory, Hawaii,
J. Geophys. Res., 1996, 101, D9, 14697-14710, https://doi.org/10.1029/96JD00212
. [all data]
Weber, 1986
Weber, L.,
Utilization of the Sadtler standard RI system in micropollution analyses,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1986, 9, 8, 446-451, https://doi.org/10.1002/jhrc.1240090806
. [all data]
Peters, de Leer, et al., 1994
Peters, R.J.D.; de Leer, E.W.B.; Versteegh, J.F.M.,
Identification of Halogenated Compounds Produced by Chlorination of Humic Acid in the Presence of Bromide,
J. Chromatogr. A, 1994, 686, 2, 253-261, https://doi.org/10.1016/0021-9673(94)00719-5
. [all data]
Zenkevich, 2001
Zenkevich, I.G.,
Comparative Characterization of Conditions for Unambuguous Chromatographic Identification of Organic Compounds,
Zh. Anal. Khim., 2001, 56, 9, 915-924. [all data]
Flanagan, Streete, et al., 1997
Flanagan, R.J.; Streete, P.J.; Ramsey, J.D.,
Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56, retrieved from http://www.odccp.org/pdf/technicalseries1997-01-011.pdf. [all data]
Strete, Ruprah, et al., 1992
Strete, P.J.; Ruprah, M.; Ramsey, J.D.; Flanagan, R.J.,
Detection and identification of volatile substances by headspace capillary gas chromatography to aid the diagnosis of acute poisoning,
Analyst, 1992, 117, 7, 1111-1127, https://doi.org/10.1039/an9921701111
. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
le Pape, Grua-Priol, et al., 2004
le Pape, M.-A.; Grua-Priol, J.; Prost, C.; Demaimay, M.,
Optimization of dynamic headspace extraction of the edible red algae Palmaria palmata and identification of the volatile components,
J. Agric. Food Chem., 2004, 52, 3, 550-556, https://doi.org/10.1021/jf030478x
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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