2-Propanol, 2-methyl-

• Formula: C₄H₁₀O
• Molecular weight: 74.1216
• IUPAC Standard InChI: InChI=1S/C4H10O/c1-4(2,3)5/h5H,1-3H3 Copy

  
• IUPAC Standard InChIKey: DKGAVHZHDRPRBM-UHFFFAOYSA-N Copy
• CAS Registry Number: 75-65-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Isotopologues:
  • 2-Propanol, 2-methyl-d
  • 2-Propanol, 2-methyl-d
• Other names: tert-Butyl alcohol; tert-Butanol; Ethanol, 1,1-Dimethyl-; Trimethylcarbinol; Trimethylmethanol; 1,1-Dimethylethanol; 2-Methyl-2-propanol; tert-C4H9OH; t-Butanol; tert-Butyl hydroxide; 2-Methylpropanol-2; 2-Methylpropan-2-ol; Alcool butylique tertiaire; Butanol tertiaire; t-Butyl hydroxide; Methanol, trimethyl-; NCI-C55367; 2-Methyl n-propan-2-ol; Methyl-2 propanol-2; Tert.-butyl alcohol
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • IR Spectrum
  • Gas Chromatography
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Gas phase 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

Constant pressure heat capacity of gas

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
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₄H₉O^- +  =

By formula: C₄H₉O^- + H⁺ = C₄H₁₀O

Ion clustering 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

 +  = C₄H₁₀BrO^-

By formula: Br^- + C₄H₁₀O = C₄H₁₀BrO^-

 + 2 = C₈H₂₀BrO₂^-

By formula: Br^- + 2C₄H₁₀O = C₈H₂₀BrO₂^-

 + 3 = C₁₂H₃₀BrO₃^-

By formula: Br^- + 3C₄H₁₀O = C₁₂H₃₀BrO₃^-

CH₆N⁺ +  = (CH₆N⁺ • )

By formula: CH₆N⁺ + C₄H₁₀O = (CH₆N⁺ • C₄H₁₀O)

Bond type: Hydrogen bonds of the type NH+-O between organics

Free energy of reaction

CN^- +  = (CN^- • )

By formula: CN^- + C₄H₁₀O = (CN^- • C₄H₁₀O)

C₃H₉Sn⁺ +  = (C₃H₉Sn⁺ • )

By formula: C₃H₉Sn⁺ + C₄H₁₀O = (C₃H₉Sn⁺ • C₄H₁₀O)

Free energy of reaction

C₄H₉O^- +  = (C₄H₉O^- • )

By formula: C₄H₉O^- + C₄H₁₀O = (C₄H₉O^- • C₄H₁₀O)

 +  = ( • )

By formula: C₅H₅^- + C₄H₁₀O = (C₅H₅^- • C₄H₁₀O)

C₅H₁₁O^- +  = (C₅H₁₁O^- • )

By formula: C₅H₁₁O^- + C₄H₁₀O = (C₅H₁₁O^- • C₄H₁₀O)

C₆H₅NO₂^- +  = (C₆H₅NO₂^- • )

By formula: C₆H₅NO₂^- + C₄H₁₀O = (C₆H₅NO₂^- • C₄H₁₀O)

 +  = C₁₀H₁₅OS^-

By formula: C₆H₅S^- + C₄H₁₀O = C₁₀H₁₅OS^-

 +  = ( • )

By formula: Cl^- + C₄H₁₀O = (Cl^- • C₄H₁₀O)

( • ) +  = ( • 2)

By formula: (Cl^- • C₄H₁₀O) + C₄H₁₀O = (Cl^- • 2C₄H₁₀O)

( • 2) +  = ( • 3)

By formula: (Cl^- • 2C₄H₁₀O) + C₄H₁₀O = (Cl^- • 3C₄H₁₀O)

( • 3) +  = ( • 4)

By formula: (Cl^- • 3C₄H₁₀O) + C₄H₁₀O = (Cl^- • 4C₄H₁₀O)

( • 4) +  = ( • 5)

By formula: (Cl^- • 4C₄H₁₀O) + C₄H₁₀O = (Cl^- • 5C₄H₁₀O)

( • 5) +  = ( • 6)

By formula: (Cl^- • 5C₄H₁₀O) + C₄H₁₀O = (Cl^- • 6C₄H₁₀O)

 +  = C₄H₉D₁₀FO^-

By formula: F^- + C₄H₁₀O = C₄H₉D₁₀FO^-

 +  = ( • )

By formula: F^- + C₄H₁₀O = (F^- • C₄H₁₀O)

 + 2 = C₈H₂₀FO₂^-

By formula: F^- + 2C₄H₁₀O = C₈H₂₀FO₂^-

 + 3 = C₁₂H₃₀FO₃^-

By formula: F^- + 3C₄H₁₀O = C₁₂H₃₀FO₃^-

HS^- +  = (HS^- • )

By formula: HS^- + C₄H₁₀O = (HS^- • C₄H₁₀O)

 +  = ( • )

By formula: I^- + C₄H₁₀O = (I^- • C₄H₁₀O)

 + 2 = C₈H₂₀IO₂^-

By formula: I^- + 2C₄H₁₀O = C₈H₂₀IO₂^-

 +  = ( • )

By formula: Li⁺ + C₄H₁₀O = (Li⁺ • C₄H₁₀O)

 +  = ( • )

By formula: NO₂^- + C₄H₁₀O = (NO₂^- • C₄H₁₀O)

 +  = ( • )

By formula: Na⁺ + C₄H₁₀O = (Na⁺ • C₄H₁₀O)

Free energy of reaction

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

References

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

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

Wiberg and Hao, 1991
Wiberg, K.B.; Hao, S., Enthalpies of hydration of alkenes. 4. Formation of acyclic tert-alcohols, J. Org. Chem., 1991, 56, 5108-5110. [all data]

Skinner and Snelson, 1960
Skinner, H.A.; Snelson, A., The heats of combustion of the four isomeric butyl alcohols, Trans. Faraday Soc., 1960, 56, 1776-1783. [all data]

Taft and Riesz, 1955
Taft, R.W., Jr.; Riesz, P., Thermodynamic properties for the system isobutene-t-butyl alcohol, J. Am. Chem. Soc., 1955, 77, 902-904. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Beynon E.T., 1963
Beynon E.T., Jr., The thermodynamic properties of 2-methyl-2-propanol, J. Phys. Chem., 1963, 67, 2761-2765. [all data]

Chao J., 1986
Chao J., Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties, J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]

Stromsoe E., 1970
Stromsoe E., Heat capacity of alcohol vapors at atmospheric pressure, J. Chem. Eng. Data, 1970, 15, 286-290. [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]

Shao, Baer, et al., 1988
Shao, J.D.; Baer, T.; Lewis, D.K., Dissociation dynamics of energy-selected ion-dipole complexes. 2. Butyl alcohol ions, J. Phys. Chem., 1988, 92, 5123. [all data]

Cocksey, Eland, et al., 1971
Cocksey, B.J.; Eland, J.H.D.; Danby, C.J., The effect of alkyl substitution on ionisation potential, J. Chem. Soc., 1971, (B), 790. [all data]

Baker, Betteridge, et al., 1971
Baker, A.D.; Betteridge, D.; Kemp, N.R.; Kirby, R.E., Application of photoelectron spectrometry to pesticide analysis. II.Photoelectron spectra of hydroxy-, and halo-alkanes and halohydrins, Anal. Chem., 1971, 43, 375. [all data]

Benoit and Harrison, 1977
Benoit, F.M.; Harrison, A.G., Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules, J. Am. Chem. Soc., 1977, 99, 3980. [all data]

Peel and Willett, 1975
Peel, J.B.; Willett, G.D., Photoelectron spectroscopic studies of the higher alcohols, Aust. J. Chem., 1975, 28, 2357. [all data]

Robin and Kuebler, 1973
Robin, M.B.; Kuebler, N.A., Excited electronic states of the simple alcohols, J. Electron Spectrosc. Relat. Phenom., 1973, 1, 13. [all data]

Lossing, 1977
Lossing, F.P., Heats of formation of some isomeric [C_nH_2n+1]⁺ ions. Substitutional effects on ion stability, J. Am. Chem. Soc., 1977, 99, 7526. [all data]

Beauchamp, Caserio, et al., 1974
Beauchamp, J.L.; Caserio, M.C.; McMahon, T.B., Ion-molecule reactions of tert-butyl alcohol by ion cyclotron resonance spectroscopy, J. Am. Chem. Soc., 1974, 96, 6243. [all data]

Potapov and Sorokin, 1972
Potapov, V.K.; Sorokin, V.V., Kinetic energies of products of dissociative photoionization of molecules. I. Aliphatic ketones and alcohols, Khim. Vys. Energ., 1972, 6, 387. [all data]

Potapov and Sorokin, 1970
Potapov, V.K.; Sorokin, V.V., Investigation of ionic molecular reactions proceeding during photoionization of aromatic compounds and alcohols, Dokl. Akad. Nauk SSSR, 1970, 195, 616, In original 848. [all data]

Harrison, Ivko, et al., 1966
Harrison, A.G.; Ivko, A.; Van Raalte, D., Energetics of formation of some oxygenated ions and the proton affinities of carbonyl compounds, Can. J. Chem., 1966, 44, 1625. [all data]

Ramond, Davico, et al., 2000
Ramond, T.M.; Davico, G.E.; Schwartz, R.L.; Lineberger, W.C., Vibronic structure of alkoxy radicals via photoelectron spectroscopy, J. Chem. Phys., 2000, 112, 3, 1158-1169, https://doi.org/10.1063/1.480767 . [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]

DeTuri and Ervin, 1999
DeTuri, V.F.; Ervin, K.M., Competitive threshold collision-induced dissociation: Gas-phase acidities and bond dissociation energies for a series of alcohols, J. Phys. Chem. A, 1999, 103, 35, 6911-6920, https://doi.org/10.1021/jp991459m . [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]

Bogdanov, Peschke, et al., 1999
Bogdanov, B.; Peschke, M.; Tonner, D.S.; Szulejko, J.E.; McMahon, T.B., Stepwise solvation of halides by alcohol molecules in the gas phase, Int. J. Mass Spectrom., 1999, 187, 707-725, https://doi.org/10.1016/S1387-3806(98)14180-5 . [all data]

Meot-Ner, 1984
Meot-Ner, (Mautner)M., The Ionic Hydrogen Bond and Ion Solvation. 1. -NH+ O-, -NH+ N- and -OH+ O- Bonds. Correlations with Proton Affinity. Deviations Due to Structural Effects, J. Am. Chem. Soc., 1984, 106, 5, 1257, https://doi.org/10.1021/ja00317a015 . [all data]

Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids, J. Am. Chem. Soc., 1987, 109, 6230. [all data]

Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P., Hydration of CN-, NO₂-, NO₃-, and HO- in the gas phase, Can. J. Chem., 1971, 49, 3308. [all data]

Stone and Splinter, 1984
Stone, J.A.; Splinter, D.E., A high-pressure mass spectrometric study of the binding of (CH₃)₃Sn⁺ to lewis bases in the gas phase, Int. J. Mass Spectrom. Ion Processes, 1984, 59, 169. [all data]

Caldwell, Rozeboom, et al., 1984
Caldwell, G.; Rozeboom, M.D.; Kiplinger, J.P.; Bartmess, J.E., Anion-alcohol hydrogen bond strengths in the gas phase, J. Am. Chem. Soc., 1984, 106, 4660. [all data]

Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P., Thermodynamics of the Association Reactions OH- - H2O = HOHOH- and CH3O- - CH3OH = CH3OHOCH3- in the Gas Phase, J. Phys. Chem., 1990, 94, 12, 5184, https://doi.org/10.1021/j100375a076 . [all data]

Meot-ner and Sieck, 1986
Meot-ner, M.; Sieck, L.W., Relative acidities of water and methanol, and the stabilities of the dimer adducts, J. Phys. Chem., 1986, 90, 6687. [all data]

Meot-Ner(Mautner), 1986
Meot-Ner(Mautner), M., Comparative Stabilities of Cationic and Anionic Hydrogen-Bonded Networks. Mixed Clusters of Water-Methanol, J. Am. Chem. Soc., 1986, 108, 20, 6189, https://doi.org/10.1021/ja00280a014 . [all data]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Sieck, 1985
Sieck, L.W., Thermochemistry of Solvation of NO₂^- and C₆H₅NO₂^- by Polar Molecules in the Vapor Phase. Comparison with Cl^- and Variation with Ligand Structure., J. Phys. Chem., 1985, 89, 25, 5552, https://doi.org/10.1021/j100271a049 . [all data]

Sieck and Meot-ner, 1989
Sieck, L.W.; Meot-ner, M., Ionic Hydrogen Bond and Ion Solvation. 8. RS-..HOR Bond Strengths. Correlation with Acidities., J. Phys. Chem., 1989, 93, 4, 1586, https://doi.org/10.1021/j100341a079 . [all data]

Hiraoka and Mizuse, 1987
Hiraoka, K.; Mizuse, S., Gas-Phase Solvation of Cl- with H2O, CH3OH, C2H4OH, i-C3H7OH, n-C3H7OH, and t-C4H9OH, Chem. Phys., 1987, 118, 3, 457, https://doi.org/10.1016/0301-0104(87)85078-4 . [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl^-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl^- = RHCl^-, Can. J. Chem., 1982, 60, 1907. [all data]

Kebarle, 1977
Kebarle, P., Ion Thermochemistry and Solvation from Gas Phase Ion Equilibria, Ann. Rev. Phys. Chem., 1977, 28, 1, 445, https://doi.org/10.1146/annurev.pc.28.100177.002305 . [all data]

Yamdagni and Kebarle, 1971
Yamdagni, R.; Kebarle, P., Hydrogen bonding energies to negative ions from gas phase measurements of ionic equilibria, J. Am. Chem. Soc., 1971, 93, 7139. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Wilkinson, Szulejko, et al., 1992
Wilkinson, F.E.; Szulejko, J.E.; Allison, C.E.; Mcmahon, T.B., Fourier Transform Ion Cyclotron Resonance Investigation of the Deuterium Isotope Effect on Gas Phase Ion/Molecule Hydrogen Bonding Interactions in Alcohol-Fluoride Adduct Ions, Int. J. Mass Spectrom., 1992, 117, 487-505, https://doi.org/10.1016/0168-1176(92)80110-M . [all data]

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Caldwell and Kebarle, 1984
Caldwell, G.; Kebarle, P., Binding energies and structural effects in halide anion-ROH and -RCOOH complexes from gas phase equilibria measurements, J. Am. Chem. Soc., 1984, 106, 967. [all data]

Rodgers and Armentrout, 2000
Rodgers, M.T.; Armentrout, P.B., Noncovalent Metal-Ligand Bond Energies as Studied by Threshold Collision-Induced Dissociation, Mass Spectrom. Rev., 2000, 19, 4, 215, https://doi.org/10.1002/1098-2787(200007)19:4<215::AID-MAS2>3.0.CO;2-X . [all data]

Rodgers and Armentrout, 1999
Rodgers, M.T.; Armentrout, P.B., Absolute Binding Energies of Sodium Ions to Short-Chain Alcohols, CnH2n+2O, n=1-4, Determined by Threshold Collision-Induced Dissociation Experiments and Ab Initio Theory, 1999, 4955. [all data]

McMahon and Ohanessian, 2000
McMahon, T.B.; Ohanessian, G., An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions, Chem. Eur. J., 2000, 6, 16, 2931, https://doi.org/10.1002/1521-3765(20000818)6:16<2931::AID-CHEM2931>3.0.CO;2-7 . [all data]

Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,gas	Constant pressure heat capacity of gas
  IE (evaluated)	Recommended ionization energy
  T	Temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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