1-Propanol, 2,2-dimethyl-

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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
LL - Sharon G. Lias and Joel F. Liebman

View reactions leading to C5H12O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)190.1kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity182.9kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.72 ± 0.05EIBissonnette, George, et al., 1990LL

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C4H8+10.2 ± 0.1CH3OHEIBissonnette, George, et al., 1990LL

De-protonation reactions

C5H11O- + Hydrogen cation = 1-Propanol, 2,2-dimethyl-

By formula: C5H11O- + H+ = C5H12O

Quantity Value Units Method Reference Comment
Δr372.6 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr373.1 ± 2.3kcal/molD-EAJanousek, Zimmerman, et al., 1978gas phase; B
Δr372.7 ± 2.0kcal/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; B
Quantity Value Units Method Reference Comment
Δr366.0 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr366.5 ± 2.4kcal/molH-TSJanousek, Zimmerman, et al., 1978gas phase; B
Δr366.1 ± 2.1kcal/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; 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: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COPYRIGHT (C) 1988 by COBLENTZ SOCIETY INC.
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CHEMICAL COMPANY
Source reference COBLENTZ NO. 7960
Date 1964/04/03
Name(s) Neopentyl alcohol
State SOLUTION (10% CCl4 FOR 3800-1340, 10% CS2 FOR 1340-450 CM-1)
Instrument DOW KBr FOREPRISM-GRATING
Instrument parameters BLAZED AT 3.5, 12.0, 20.0 MICRON AND CHANGED AT 5.0, 7.5, 14.9 MICRON
Path length 0.011 CM, 0.011 CM
SPECTRAL CONTAMINATION DUE TO CS2 AROUND 850 AND CCl4 AROUND 1550 CM-1 HAVE BEEN SUBTRACTED
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


References

Go To: Top, Gas phase ion energetics data, IR Spectrum, 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]

Bissonnette, George, et al., 1990
Bissonnette, M.; George, M.; Holmes, J.L., The experimental investigation of [C5H12O] ion structures related to neopentyl alcohol and its methyl ether, Int. J. Mass Spectrom. Ion Processes, 1990, 101, 309. [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]

Janousek, Zimmerman, et al., 1978
Janousek, B.K.; Zimmerman, A.H.; Reed, K.J.; Brauman, J.I., Electron detachment from aliphatic molecular anions. Gas phase electron affinites of methoxyl, tert-butoxyl, and neopentoxyl radicals, J. Am. Chem. Soc., 1978, 100, 6142. [all data]

Haas and Harrison, 1993
Haas, M.J.; Harrison, A.G., The Fragmentation of Proton-Bound Cluster Ions and the Gas-Phase Acidities of Alcohols, Int. J. Mass Spectrom. Ion Proc., 1993, 124, 2, 115, https://doi.org/10.1016/0168-1176(93)80003-W . [all data]


Notes

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