Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Benzene, 1-bromo-4-methoxy-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Phase change data

Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, 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:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil496.2KN/AAldrich Chemical Company Inc., 1990BS
Tboil488.2KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Deltavap58.3 ± 1.2kJ/molCRibeiro da Silva and Lobo Ferreira, 2009AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Reference Comment
48.9333.Stull, 1947Based on data from 318. - 496. K.; AC

Antoine Equation Parameters

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

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
317.9 - 496.5.384132722.2610.592Stull, 1947Coefficents calculated by NIST from author's data.

Gas phase ion energetics data

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, 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

Quantity Value Units Method Reference Comment
IE (evaluated)8.13 ± 0.02eVN/AN/AL

Ionization energy determinations

IE (eV) Method Reference Comment
8.14 ± 0.03PIPonomarev, Arapov, et al., 1986LBLHLM
8.11PEBehan, Johnstone, et al., 1976LLK
8.4 ± 0.1EIBrown, 1970RDSH
8.2 ± 0.15CTSVoigt and Reid, 1964RDSH
8.49PEBaker, May, et al., 1968Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C6H4BrO+11.88 ± 0.05CH3PIPonomarev, Arapov, et al., 1986LBLHLM
C6H4BrO+11.9 ± 0.1CH3EIBrown, 1970RDSH
C6H4OBr+11.80CH3EIHowe and Williams, 1969RDSH
C6H4OBr+11.8 ± 0.1CH3EITait, Shannon, et al., 1962RDSH
C6H5Br+11.5 ± 0.1CH2OEIBrown, 1970RDSH

IR Spectrum

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

Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


Mass spectrum (electron ionization)

Go To: Top, Phase change data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, NIST Free Links, References, Notes

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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

View spectrum image in SVG format.

Download spectrum in JCAMP-DX format.

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 USAF ACADEMY, COLORADO SPRINGS, COLORADO 80840, J LLOYD PFLUG
NIST MS number 79984

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

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

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

View large format table.

Column type Active phase Temperature (C) I Reference Comment
PackedApolane150.1212.Evans and Haken, 1987He, Chromosorb G AW DCMS; Column length: 3.7 m
PackedApolane150.1212.Haken and Vernon, 1986Chromosorb G AW DCMS; Column length: 3.7 m
PackedApiezon L130.1224.Cook and Raushel, 1972He, Chromosorb W AW DMCS (80-100 mesh)

Kovats' RI, polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
PackedCarbowax 20M150.1706.Haken and Vernon, 1986Chromosorb G AW DCMS; Column length: 3.7 m; Column diameter: 6.4 mm

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

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-5MS1212.7Tret'yakov, 200730. m/0.25 mm/0.25 «mu»m, He; Program: Multi-step temperature program; T(initial)=60C; T(final)=270C

References

Go To: Top, Phase change 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.

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

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]

Ribeiro da Silva and Lobo Ferreira, 2009
Ribeiro da Silva, Manuel A.V.; Lobo Ferreira, Ana I.M.C., Experimental and computational study on the molecular energetics of monobromoanisole isomers, The Journal of Chemical Thermodynamics, 2009, 41, 4, 499-505, https://doi.org/10.1016/j.jct.2008.11.008 . [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]

Ponomarev, Arapov, et al., 1986
Ponomarev, D.A.; Arapov, O.V.; Sergeev, Y.L.; Chistyakov, A.B., [Title unavailable], Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1986, 29, 107. [all data]

Behan, Johnstone, et al., 1976
Behan, J.M.; Johnstone, R.A.W.; Bentley, T.W., An evaluation of empirical methods for calculating the ionization potentials of substituted benzenes, Org. Mass Spectrom., 1976, 11, 207. [all data]

Brown, 1970
Brown, P., Kinetic studies in mass spectrometry. VIII. Competing [M-CH3] and [M-CH2O] reactions in substituted anisoles. Approximate activation energies from ionization appearance potentials, Org. Mass Spectrom., 1970, 4, 519. [all data]

Voigt and Reid, 1964
Voigt, E.M.; Reid, C., Ionization potentials of substituted benzenes and their charge-transfer spectra with tetracyanoethylene, J. Am. Chem. Soc., 1964, 86, 3930. [all data]

Baker, May, et al., 1968
Baker, A.D.; May, D.P.; Turner, D.W., Molecular photoelectron spectroscopy. Part VII. The vertical ionisation potentials of benzene and some of its monosubstituted and 1,4-disubstituted derivatives, J. Chem. Soc. B, 1968, 22. [all data]

Howe and Williams, 1969
Howe, I.; Williams, D.H., Calculation and qualitative predictions of mass spectra. Mono- and paradisubstituted benzenes, J. Am. Chem. Soc., 1969, 91, 7137. [all data]

Tait, Shannon, et al., 1962
Tait, J.M.S.; Shannon, T.W.; Harrison, A.G., The structure of substituted C7 ions from benzyl derivatives at the appearance potential threshold, J. Am. Chem. Soc., 1962, 84, 4. [all data]

Evans and Haken, 1987
Evans, M.B.; Haken, J.K., Dispersion and selectivity indices of the halogenated derivatives of cyclohexane, benzene and anisole, J. Chromatogr., 1987, 389, 240-244, https://doi.org/10.1016/S0021-9673(01)94428-0 . [all data]

Haken and Vernon, 1986
Haken, J.K.; Vernon, F., Gas chromatography of halogenated derivatives of cyclohexane, benzene and anisole, J. Chromatogr., 1986, 361, 57-61, https://doi.org/10.1016/S0021-9673(01)86893-X . [all data]

Cook and Raushel, 1972
Cook, L.E.; Raushel, F.M., Calculation of retention indices for benzene and benzene derivatives on the basis of molecular structure, J. Chromatogr., 1972, 65, 3, 556-559, https://doi.org/10.1016/S0021-9673(00)85001-3 . [all data]

Tret'yakov, 2007
Tret'yakov, K.V., Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2007. [all data]


Notes

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