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Benzene, 1,4-dimethoxy-

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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
Tboil485.8KN/AWeast and Grasselli, 1989BS
Tboil485.8KN/APerkin, 1896Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus329.KN/AVowinkel, 1966Uncertainty assigned by TRC = 3. K; TRC
Tfus329.45KN/ANagakura and Baba, 1952Uncertainty assigned by TRC = 0.6 K; TRC
Quantity Value Units Method Reference Comment
Deltasub84.1 ± 2.3kJ/molCMatos, Miranda, et al., 2000AC

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
382.20.027Weast and Grasselli, 1989BS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
62.1313.AStephenson and Malanowski, 1987Based on data from 298. - 357. K.; AC

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:


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:
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)7.56 ± 0.11eVN/AN/AL

Ionization energy determinations

IE (eV) Method Reference Comment
7.78 ± 0.03PIPonomarev, Arapov, et al., 1986LBLHLM
7.53 ± 0.03SOikawa, Abe, et al., 1985LBLHLM
7.54PEBehan, Johnstone, et al., 1976LLK
7.45EICooks, Bertrand, et al., 1973LLK
7.9 ± 0.1EIBrown, 1970RDSH
7.7 ± 0.15CTSVoigt and Reid, 1964RDSH
7.90PEChmutova, Vtyurina, et al., 1979Vertical value; LLK
7.96PEAnderson, Kollman, et al., 1979Vertical value; LLK
7.90PEDomelsmith and Houk, 1978Vertical value; LLK
7.83 ± 0.015PEKlessinger, Asmus, et al., 1975Vertical value; LLK
7.90PEBock and Wagner, 1972Vertical value; LLK
7.90PEBaker, May, et al., 1968Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C6H5+15.8CH3+CO+H2OEIMori, Ogawa, et al., 1992LL
C6H7O+12.9CH3+COEIMori, Ogawa, et al., 1992LL
C7H7O2+11.27 ± 0.05CH3PIPonomarev, Arapov, et al., 1986LBLHLM
C7H7O2+11.0 ± 0.1CH3EIBrown, 1970RDSH
C7H7O2+10.4 ± 0.1CH3EITait, Shannon, et al., 1962RDSH
C7H8O+11.00HCHOEICooks, Bertrand, et al., 1973LLK

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

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 NIST Mass Spectrometry Data Center, 1990.
NIST MS number 113405

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
CapillarySE-30100.1143.4Tudor, 199740. m/0.35 mm/0.35 «mu»m
PackedApiezon L100.1143.Bogoslovsky, Anvaer, et al., 1978Chromatone N AW DNCS
PackedApiezon L150.1159.Bogoslovsky, Anvaer, et al., 1978Chromatone N AW DNCS

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

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Column type Active phase I Reference Comment
CapillaryHP-51170.Zhao J.Y., Liu J.M., et al., 200630. m/0.25 mm/0.25 «mu»m, He, 60. C @ 2. min, 10. K/min, 250. C @ 10. min
CapillaryHP-51163.Fokialakis, Magiatis, et al., 200230. m/0.25 mm/0.25 «mu»m, 60. C @ 5. min, 3. K/min; Tend: 280. C
CapillarySE-541165.21Yin, Xiu, et al., 200135. C @ 3. min, 4. K/min, 230. C @ 10. min; Column length: 25. m; Column diameter: 0.31 mm
CapillarySE-541167.74Yin, Xiu, et al., 200135. C @ 3. min, 4. K/min, 230. C @ 10. min; Column length: 25. m; Column diameter: 0.31 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-5MS1180.1Tret'yakov, 200830. m/0.25 mm/0.25 «mu»m, He; Program: Multi-step temperature program; T(initial)=60C; T(final)=270C
CapillaryVF-5MS1177.Tret'yakov, 200830. m/0.25 mm/0.25 «mu»m, He; Program: Multi-step temperature program; T(initial)=60C; T(final)=270C

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

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-Wax1727.Cantergiani, Brevard, et al., 200130. m/0.25 mm/0.25 «mu»m; Program: 20C(30s) => fast => 60C => 4C/min => 220C (20min)

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-5 MS1185.Souza, Re-Poppi, et al., 201230. m/0.25 mm/0.25 «mu»m, Helium, 60. C @ 1. min, 6. K/min, 280. C @ 3. min
CapillaryZP-51175.Füssel, Dötterl, et al., 200760. m/0.25 mm/0.25 «mu»m, He, 40. C @ 7. min, 6. K/min, 260. C @ 1. min
CapillaryHP-5MS1165.Bozin, Mimicá-Dukic, et al., 200630. m/0.25 mm/0.25 «mu»m, He, 3. K/min; Tstart: 60. C; Tend: 280. C
CapillaryCP Sil 8 CB1168.Li, Lee, et al., 200630. m/0.25 mm/0.25 «mu»m, 40. C @ 5. min, 3. K/min, 250. C @ 20. min
CapillaryHP-1011158.Mastelic, Jerkovic, et al., 200625. m/0.2 mm/0.2 «mu»m, He, 70. C @ 2. min, 3. K/min, 200. C @ 15. min
CapillaryDB-11128.Park, Lee, et al., 200460. m/0.32 mm/0.25 «mu»m, He, 35. C @ 4. min, 2. K/min, 230. C @ 25. min
CapillaryDB-11130.Park, Lee, et al., 200460. m/0.32 mm/0.25 «mu»m, He, 35. C @ 4. min, 2. K/min, 230. C @ 25. min
CapillaryDB-11130.Park, Lee, et al., 200460. m/0.32 mm/0.25 «mu»m, He, 35. C @ 4. min, 2. K/min, 230. C @ 25. min
CapillaryDB-11132.Park, Lee, et al., 200460. m/0.32 mm/0.25 «mu»m, He, 35. C @ 4. min, 2. K/min, 230. C @ 25. min
CapillaryCBP-11122.Lamarque, Maestri, et al., 1998He, 4. K/min; Column length: 30. m; Column diameter: 0.25 mm; Tstart: 60. C; Tend: 240. C
CapillaryCP Sil 5 CB1171.Bos, Woerdenbag, et al., 199725. m/0.32 mm/0.25 «mu»m, N2, 4. K/min; Tstart: 50. C; Tend: 290. C
CapillaryDB-11122.Guy and Vernin, 1996He, 70. C @ 5. min, 3. K/min; Column length: 30. m; Column diameter: 0.25 mm; Tend: 300. C
CapillaryUltra-11131.Okumura, 199125. m/0.32 mm/0.25 «mu»m, He, 3. K/min; Tstart: 80. C; Tend: 260. C

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryVF-51172.Shivashankar, Roy, et al., 201230. m/0.25 mm/0.25 «mu»m, Helium; Program: 50 0C (2 min) 3 0C/min -> 200 0C (3 min) 10 0C/min -> 220 0C (8 min)
CapillaryVF-51186.Shivashankar, Roy, et al., 201230. m/0.25 mm/0.25 «mu»m, Helium; Program: not specified
CapillarySE-301145.Vinogradov, 2004Program: not specified
CapillaryHP-5MS1192.Ansorena, Gimeno, et al., 200130. m/0.25 mm/0.25 «mu»m, He; Program: 40C (10min) => 3C/min => 120C => 10C/min => 250C (5min)
CapillaryPolydimethyl siloxane1145.Spanier, Shahidi, et al., 2001Program: not specified

Normal alkane RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryAT-Wax1752.Kiss, Csoka, et al., 201160. m/0.25 mm/0.25 «mu»m, Helium, 4. K/min; Tstart: 60. C; Tend: 280. C
CapillaryDB-Wax1728.Dregus and Engel, 200360. m/0.32 mm/0.25 «mu»m, H2, 40. C @ 5. min, 4. K/min, 230. C @ 25. min
CapillarySupelcowax-101747.Lamarque, Maestri, et al., 1998He, 4. K/min; Column length: 30. m; Column diameter: 0.25 mm; Tstart: 60. C; Tend: 240. C
CapillaryPEG-20M1759.Awano, Honda, et al., 1997He, 3. K/min; Column length: 60. m; Column diameter: 0.25 mm; Tstart: 70. C; Tend: 210. C
CapillaryTC-Wax1747.Shuichi, Masazumi, et al., 199680. C @ 5. min, 3. K/min; Column length: 60. m; Column diameter: 0.25 mm; Tend: 240. C
CapillaryDB-Wax1750.Andersen J.F., Mikolajczak K.L., et al., 1987Helium, 40. C @ 1. min, 6. K/min; Column length: 30. m; Column diameter: 0.32 mm; Tend: 200. C

Normal alkane RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-Wax1757.Caldentey, Daria Fumi, et al., 199830. m/0.25 mm/0.25 «mu»m, He; Program: 25C(8min) => 4C/min => 60C => 6C/min => 160C => 20C/min => 200C

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.

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]

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Perkin, W.H., LXIX. On Magnetic Rotatory Power, especially of Aromatic Compounds, J. Chem. Soc., 1896, 69, 1025-1257. [all data]

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Vowinkel, E., Preparation of Aryl Alky8 Ethers by Means of O-Alkyl-N,N'-dicyclohexyl- isoureas, Chem. Ber., 1966, 99, 1479-84. [all data]

Nagakura and Baba, 1952
Nagakura, S.; Baba, H., Dipole moments and near-ultraviolet absorption of some monosubsti- tuted benzenes--the effect of solvents and hydrogen bonding., J. Am. Chem. Soc., 1952, 74, 5693. [all data]

Matos, Miranda, et al., 2000
Matos, M.A.R.; Miranda, M.S.; Morais, V.M.F., Calorimetric and Theoretical Determination of Standard Enthalpies of Formation of Dimethoxy- and Trimethoxybenzene Isomers, J. Phys. Chem. A, 2000, 104, 40, 9260-9265, https://doi.org/10.1021/jp001928g . [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]

Ponomarev, Arapov, et al., 1986
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Oikawa, A.; Abe, H.; Mikami, N.; Ito, M., Electronic spectra and ionization potentials of rotational isomers of severaldDisubstituted benzenes, Chem. Phys. Lett., 1985, 116, 50. [all data]

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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]

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Cooks, R.G.; Bertrand, M.; Beynon, J.H.; Rennekamp, M.E.; Setser, D.W., Energy partitioning data as an ion structure probe. Substituted anisoles, J. Am. Chem. Soc., 1973, 95, 1732. [all data]

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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]

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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]

Chmutova, Vtyurina, et al., 1979
Chmutova, G.A.; Vtyurina, N.N.; Komina, T.V.; Gazizov, I.G.; Bock, H., Molecular-orbital characteristics of anisole isologs X-C6H4-ECH3 (E = O, S, Se) containing donor substituents X, Zh. Obshch. Khim., 1979, 49, 192. [all data]

Anderson, Kollman, et al., 1979
Anderson, G.M., III; Kollman, P.A.; Domelsmith, L.N.; Houk, K.N., Methoxy group nonplanarity in o-dimethoxybenzenes. Simple predictive models for conformations and rotational barriers in alkoxyaromatics, J. Am. Chem. Soc., 1979, 101, 2344. [all data]

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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]

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Mori, Y.; Ogawa, Y.; Shinoda, H.; Kitagawa, T., Two competing fragmentation processes in dimethoxybenzenes depending on their positional isomers: Elimination of CH3 and CHnO (n = 1-3) and formation of methoxycyclopentadienyl and protonated phenol ions, Org. Mass Spectrom., 1992, 27, 578. [all data]

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Fokialakis, N.; Magiatis, P.; Mitaku, S., Essential oil constituents of Valeriana italica and Valeriana tuberosa. Stereochemical and conformational study of 15-acetoxyvaleranone, Z. Naturforsch., 2002, 57c, 791-796. [all data]

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Dregus, M.; Engel, K.-H., Volatile constituents of uncooked Rhubarb (Rheum rhabarbarum L.) stalks, J. Agric. Food Chem., 2003, 51, 22, 6530-6536, https://doi.org/10.1021/jf030399l . [all data]

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Awano, K.; Honda, T.; Ogawa, T.; Suzuki, S.; Matsunaga, Y., Volatile components of Phalaenopsis schilleriana Rehb. f., Flavour Fragr. J., 1997, 12, 5, 341-344, https://doi.org/10.1002/(SICI)1099-1026(199709/10)12:5<341::AID-FFJ657>3.0.CO;2-L . [all data]

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Andersen J.F., Mikolajczak K.L., et al., 1987
Andersen J.F.; Mikolajczak K.L.; Reed D.K., Analysis of peach bark volatiles and their electroantennogram activity with lesser pechtree borer, Synanthedon pictipes (Grote and Robinson), J. Chem. Ecol., 1987, 13, 11, 2103-2114, https://doi.org/10.1007/BF01012874 . [all data]

Caldentey, Daria Fumi, et al., 1998
Caldentey, P.; Daria Fumi, M.; Mazzoleni, V.; Careri, M., Volatile compounds produced by microorganisms isolated from cork, Flavour Fragr. J., 1998, 13, 3, 185-188, https://doi.org/10.1002/(SICI)1099-1026(199805/06)13:3<185::AID-FFJ723>3.0.CO;2-W . [all data]


Notes

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