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Benzene, 1-bromo-3-methyl-

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Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil456.9KN/AWeast and Grasselli, 1989BS
Tboil457.45KN/ALecat, 1943Uncertainty assigned by TRC = 0.4 K; TRC
Tboil457.16KN/AStuckey and Saylor, 1940Uncertainty assigned by TRC = 0.25 K; TRC
Quantity Value Units Method Reference Comment
Tfus235.01KN/AClements, Wise, et al., 1953Uncertainty assigned by TRC = 0.06 K; TRC
Tfus234.75KN/AHussey and Dyer, 1951Uncertainty assigned by TRC = 1. K; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
47.7366.N/ADykyj, Svoboda, et al., 1999Based on data from 351. - 457. K.; AC
48.3302.AStephenson and Malanowski, 1987Based on data from 287. - 457. K. See also Stull, 1947.; AC
49.4288.N/AStuckey and Saylor, 1940, 2Based on data from 273. - 348. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
287.9 - 456.96.513773506.40682.744Stull, 1947Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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 by: John E. Bartmess

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

C7H6Br- + Hydrogen cation = Benzene, 1-bromo-3-methyl-

By formula: C7H6Br- + H+ = C7H7Br

Quantity Value Units Method Reference Comment
Deltar1563. ± 13.kJ/molG+TSWenthold, Wierschke, et al., 1994gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2
Quantity Value Units Method Reference Comment
Deltar1533. ± 13.kJ/molIMRBWenthold, Wierschke, et al., 1994gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2

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:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
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
Proton affinity (review)782.0kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity752.5kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.77PEJohnstone and Mellon, 1973LLK
8.6 ± 0.1EITajima and Tsuchiya, 1972LLK
8.81 ± 0.02PIWatanabe, Nakayama, et al., 1962RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H5+15.2 ± 0.2C2H2+BrEITajima and Tsuchiya, 1973LLK
C5H5+15.20 ± 0.15C2H2+BrEITajima and Tsuchiya, 1972LLK
C7H7+<=10.99BrPIDunbar, Honovich, et al., 1988LL
C7H7+11.2 ± 0.1?EITajima and Tsuchiya, 1972LLK
C7H7+11.3BrEIYeo and Williams, 1970RDSH

De-protonation reactions

C7H6Br- + Hydrogen cation = Benzene, 1-bromo-3-methyl-

By formula: C7H6Br- + H+ = C7H7Br

Quantity Value Units Method Reference Comment
Deltar1563. ± 13.kJ/molG+TSWenthold, Wierschke, et al., 1994gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2; B
Quantity Value Units Method Reference Comment
Deltar1533. ± 13.kJ/molIMRBWenthold, Wierschke, et al., 1994gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2; B

IR Spectrum

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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

Gas Phase Spectrum

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IR spectrum
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Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


Mass spectrum (electron ionization)

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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

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center
NIST MS number 341717

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


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

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Column type Active phase Temperature (C) I Reference Comment
PackedSE-30150.1055.Tiess, 1984Ar, Gas Chrom Q (80-100 mesh); Column length: 3. m
PackedApiezon L130.1095.Wehrli and Kováts, 1959Celite; Column length: 2.25 m

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryOV-11018.7Gautzsch and Zinn, 19968. K/min; Tstart: 35. C; Tend: 300. C
PackedSE-301033.Buchman, Cao, et al., 1984He, Chromosorb AW, 40. C @ 10. min, 10. K/min, 210. C @ 30. min; Column length: 3.05 m

Van Den Dool and Kratz RI, polar column, temperature ramp

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Column type Active phase I Reference Comment
PackedCarbowax 20M1498.Buchman, Cao, et al., 1984He, Supelcoport, 40. C @ 10. min, 10. K/min, 210. C @ 30. min; Column length: 3.05 m

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
PackedSE-301033.Peng, Ding, et al., 1988Helium, Supelcoport, 40. C @ 4. min, 10. K/min, 200. C @ 60. min; Column length: 3.05 m
PackedSE-301043.Peng, Ding, et al., 1988Helium, Supelcoport, 40. C @ 4. min, 10. K/min, 200. C @ 60. min; Column length: 3.05 m

Normal alkane RI, polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryCarbowax 400, Carbowax 20M, Carbowax 1540, Carbowax 4000, Superox 06, PEG 20M, etc.1498.Waggott and Davies, 1984Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified

Lee's RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryHP5-MS169.Vrana, Paschke, et al., 200530. m/0.25 mm/0.25 «mu»m, Helium, 50. C @ 5. min, 5. K/min, 280. C @ 10. min

References

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Lecat, 1943
Lecat, M., Azeotropes of Ethyl Urethane and other Azeotropes, C. R. Hebd. Seances Acad. Sci., 1943, 217, 273. [all data]

Stuckey and Saylor, 1940
Stuckey, J.M.; Saylor, J.H., Vapor Pressures of Organic Compounds I., J. Am. Chem. Soc., 1940, 62, 2922. [all data]

Clements, Wise, et al., 1953
Clements, H.E.; Wise, K.V.; Johnson, S.E.J., Physical Properties of o-, m-, and p-Methylstyrene, J. Am. Chem. Soc., 1953, 75, 1593. [all data]

Hussey and Dyer, 1951
Hussey, A.S.; Dyer, J.R., The Monomagnesium Derivatives of Dibromotoluenes, J. Am. Chem. Soc., 1951, 73, 603. [all data]

Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R., Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Stuckey and Saylor, 1940, 2
Stuckey, James M.; Saylor, John H., The Vapor Pressures of Some Organic Compounds. I. 1, J. Am. Chem. Soc., 1940, 62, 11, 2922-2925, https://doi.org/10.1021/ja01868a011 . [all data]

Wenthold, Wierschke, et al., 1994
Wenthold, P.G.; Wierschke, S.G.; Nash, J.J.; Squires, R.R., Biradical thermochemistry from collision-induced dissociation threshold energy measurements .2. Experimental and theoretical studies of the Mechanism and Thermochemistry of Formation of alph, J. Am. Chem. Soc., 1994, 116, 16, 7378, https://doi.org/10.1021/ja00095a048 . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Johnstone and Mellon, 1973
Johnstone, R.A.W.; Mellon, F.A., Effects of induction and resonance in the calculation of ionization potentials of substituted benzenes by perturbation molecular orbital theory, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 36. [all data]

Tajima and Tsuchiya, 1972
Tajima, S.; Tsuchiya, T., The effects of the repeller voltage and the shield voltage on appearance potential measurements by electron impact, Shitsuryo Bunseki, 1972, 20, 117. [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]

Tajima and Tsuchiya, 1973
Tajima, S.; Tsuchiya, T., Energetics consideration of C5H5+ ions produced from various precursors by electron impact, Bull. Chem. Soc. Jpn., 1973, 46, 3291. [all data]

Dunbar, Honovich, et al., 1988
Dunbar, R.C.; Honovich, J.P.; Asamoto, B., Photodissociation thermochemistry as a probe of halotoluene ion potential surfaces, J. Phys. Chem., 1988, 92, 6935. [all data]

Yeo and Williams, 1970
Yeo, A.N.H.; Williams, D.H., Rearrangement in the molecular ions of halogenotoluenes prior to fragmentation in the mass spectrometer, Chem. Commun., 1970, 886. [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]

Wehrli and Kováts, 1959
Wehrli, A.; Kováts, E., Gas-chromatographische Charakterisierung ogranischer Verbindungen. Teil 3: Berechnung der Retentionsindices aliphatischer, alicyclischer und aromatischer Verbindungen, Helv. Chim. Acta, 1959, 7, 7, 2709-2736, https://doi.org/10.1002/hlca.19590420745 . [all data]

Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P., Use of incremental models to estimate the retention indexes of aromatic compounds, Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946 . [all data]

Buchman, Cao, et al., 1984
Buchman, O.; Cao, G.-Y.; Peng, C.T., Structure assignment by retention index in gas-liquid radiochromatography of substituted cyclohexenes, J. Chromatogr., 1984, 312, 75-90, https://doi.org/10.1016/S0021-9673(01)92765-7 . [all data]

Peng, Ding, et al., 1988
Peng, C.T.; Ding, S.F.; Hua, R.L., Radioimpurity identification by retention index in tritium labeling, J. Radioanal. Nucl. Chem., 1988, 123, 2, 411-420, https://doi.org/10.1007/BF02034907 . [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]

Vrana, Paschke, et al., 2005
Vrana, B.; Paschke, H.; Paschke, A.; Popp, P.; Schuurmann, G., Performance of semipermeable membrane devices for sampling of organic contaminants in groun water, J. Envirom. Monit., 2005, 7, 5, 500-508, https://doi.org/10.1039/b411645c . [all data]


Notes

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, References