3-Methoxyacetophenone

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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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)871.2kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity839.3kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.53 ± 0.05EIPignataro, Foffani, et al., 1966RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C8H7O2+10.7 ± 0.1CH3EIChin and Harrison, 1969RDSH

De-protonation reactions

C9H9O2- + Hydrogen cation = 3-Methoxyacetophenone

By formula: C9H9O2- + H+ = C9H10O2

Quantity Value Units Method Reference Comment
Δr1509. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1481. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

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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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, 1990.
NIST MS number 118549

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Gas Chromatography

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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

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

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Column type Active phase I Reference Comment
CapillaryHP-51298.Alonzo, Bosco, et al., 200030. m/0.20 mm/0.25 μm, He, 60. C @ 8. min, 4. K/min, 180. C @ 2. min

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

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Column type Active phase I Reference Comment
CapillaryDB-51295.Basile, Senatore, et al., 200630. m/0.25 mm/0.25 μm; Program: 40C(5min) => 2C/min => 250C(15min) => 10C/min => 270C

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryHP-5 MS1321.Jerkovic and Marijanovic, 201030. m/0.25 mm/0.25 μm, Helium, 70. C @ 2. min, 3. K/min, 200. C @ 18. min
CapillaryDB-51301.Miyazawa, Nishiguchi, et al., 200530. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 240. C
CapillaryDB-11282.Palá-Paúl, Velasco-Negueruela, et al., 200450. m/0.25 mm/0.25 μm, N2, 4. K/min; Tstart: 95. C; Tend: 240. C
CapillaryCross-Linked Methylsilicone1277.Velasco-Negueruela, Pérez-Alonso, et al., 200325. m/0.2 mm/0.33 μm, He, 4. K/min; Tstart: 70. C; Tend: 250. C

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

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Column type Active phase I Reference Comment
CapillarySE-301279.Vinogradov, 2004Program: not specified

Normal alkane RI, polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryDB-Wax2148.Gyawali and Kim, 201260. m/0.20 mm/0.25 μm, Helium; Program: 40 0C (3 min) 2 0C/min -> 150 0C 4 0C/min -> 220 0C (20 min) 5 0C/min -> 230 0C

References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

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]

Pignataro, Foffani, et al., 1966
Pignataro, S.; Foffani, A.; Innorta, G.; Distefano, G., Molecular structural effects on the ionization potentials for metasubstituted aromatic compounds and for compounds of the type X-CH2-R, Z. Physik. Chem. (Frankfurt), 1966, 49, 291. [all data]

Chin and Harrison, 1969
Chin, M.S.; Harrison, A.G., Substituent effects on ion abundances and energetics in substituted acetophenones, Org. Mass Spectrom., 1969, 2, 1073. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Alonzo, Bosco, et al., 2000
Alonzo, G.; Bosco, S.F.D.; Palazzolo, E.; Saiano, F.; Tusa, N., Citrus somatic hybrid leaf essential oil, Flavour Fragr. J., 2000, 15, 4, 258-262, https://doi.org/10.1002/1099-1026(200007/08)15:4<258::AID-FFJ906>3.0.CO;2-F . [all data]

Basile, Senatore, et al., 2006
Basile, A.; Senatore, F.; Gargano, R.; Sorbo, S.; Del Pezzo, M.; Lavitola, A.; Ritieni, A.; Bruno, M.; Spatuzzi, D.; Rigano, D.; Vuotto, M.L., Antibacterial and antioxidant activities in Sideritis italica (Miller) Greuter et Burdet essential oils, J. Ethnopharmacol., 2006, 107, 2, 240-248, https://doi.org/10.1016/j.jep.2006.03.019 . [all data]

Jerkovic and Marijanovic, 2010
Jerkovic, I.; Marijanovic, Z., Oak (Quercus frainetto Ten.) honeydaw honey - approach to screening of volatile organic composition and antioxidant capacity (DPPH and FRAP assay), Molecules, 2010, 15, 5, 3744-3756, https://doi.org/10.3390/molecules15053744 . [all data]

Miyazawa, Nishiguchi, et al., 2005
Miyazawa, M.; Nishiguchi, T.; Yamafuji, C., Volatile components of the leaves of Brassica rapa L. var. perviridis Bailey, Flavour Fragr. J., 2005, 20, 2, 158-160, https://doi.org/10.1002/ffj.1335 . [all data]

Palá-Paúl, Velasco-Negueruela, et al., 2004
Palá-Paúl, J.; Velasco-Negueruela, A.; Pérez-Alonso, M.J.; Maqueda, J.; Sanz, J., Volatile oil constituents from different parts of Cachrys trifida L., J. Essent. Oil Res., 2004, 16, 4, 347-349, https://doi.org/10.1080/10412905.2004.9698738 . [all data]

Velasco-Negueruela, Pérez-Alonso, et al., 2003
Velasco-Negueruela, A.; Pérez-Alonso, M.J.; Pérez de Paz, P.L.; Palá-Paúl, J.; Sanz, J., Analysis by gas chromatography-mass spectrometry of the essential oil from the aerial parts of Pimpinella junoniae Ceb. Ort., gathered in La Gomera, Canary Islands, Spain, J. Chromatogr. A, 2003, 1011, 1-2, 241-244, https://doi.org/10.1016/S0021-9673(03)01082-3 . [all data]

Vinogradov, 2004
Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]

Gyawali and Kim, 2012
Gyawali, R.; Kim, K.-S., Bioactive volatile compounds of three medicinal plants from Nepal, Kathmandu Univ. J. Sci., Engineering and Technol., 2012, 8, 1, 51-62. [all data]


Notes

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References