CH2OH+

• Formula: CH₃O⁺
• Molecular weight: 31.0334
• IUPAC Standard InChI: InChI=1S/CH3O/c1-2/h2H,1H2/q+1 Copy

  
• IUPAC Standard InChIKey: NRCYHMDIJIIHBJ-UHFFFAOYSA-N Copy
• CAS Registry Number: 17691-31-5
• Chemical structure:
  This structure is also available as a 2d Mol file
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Reaction thermochemistry data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Other data available:
  • Ion clustering data
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Reaction 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 by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  = ( • )

By formula: CH₃O⁺ + H₂O = (CH₃O⁺ • H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

 +  = ( • )

By formula: CH₃O⁺ + CH₂O = (CH₃O⁺ • CH₂O)

Bond type: Hydrogen bonds of the type OH-O between organics

( • ) +  = ( • 2)

By formula: (CH₃O⁺ • H₂O) + H₂O = (CH₃O⁺ • 2H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

( • 2) +  = ( • 3)

By formula: (CH₃O⁺ • 2H₂O) + H₂O = (CH₃O⁺ • 3H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

( • 3) +  = ( • 4)

By formula: (CH₃O⁺ • 3H₂O) + H₂O = (CH₃O⁺ • 4H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

( • 4) +  = ( • 5)

By formula: (CH₃O⁺ • 4H₂O) + H₂O = (CH₃O⁺ • 5H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

( • 6) +  = ( • 7)

By formula: (CH₃O⁺ • 6H₂O) + H₂O = (CH₃O⁺ • 7H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

( • 5) +  = ( • 6)

By formula: (CH₃O⁺ • 5H₂O) + H₂O = (CH₃O⁺ • 6H₂O)

Bond type: Hydrogen bond (positive ion to hydride)

 +  = ( • )

By formula: CH₃O⁺ + CHN = (CH₃O⁺ • CHN)

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, 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: Marilyn E. Jacox

State:   X

Additional references: Jacox, 1994, page 235; Jacox, 1998, page 270; Chomiak, Taleb-Bendiab, et al., 1994; Dore, Cazzoli, et al., 1995; Dore, Cazzoli, et al., 1997

Notes

References

Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, Notes

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

Meot-Ner (Mautner), 1984
Meot-Ner (Mautner), M., The Ionic Hydrogen Bond and Ion Solvation. 2. Hydration of Onium Ions by 1 - 7 H2O Molecules. Relations Between Monomolecular, Specific and Bulk Hydration, J. Am. Chem. Soc., 1984, 106, 5, 1265, https://doi.org/10.1021/ja00317a016 . [all data]

Davidson, Sunner J., et al., 1979
Davidson, W.R.; Sunner J.; Kebarle, P., Hydrogen Bonding of Water to Onium Ions. Hydration of Substituted Pyridinium Ions and Related Systems, J. Am. Chem. Soc., 1979, 101, 7, 1675, https://doi.org/10.1021/ja00501a005 . [all data]

Lias, Liebman, et al., 1984
Lias, S.G.; Liebman, J.F.; Levin, R.D., Evaluated gas phase basicities and proton affinities of molecules heats of formation of protonated molecules, J. Phys. Chem. Ref. Data, 1984, 13, 695. [all data]

Larson and McMahon, 1982
Larson, J.W.; McMahon, T.B., Formation, Thermochemistry, and Relative Stabilities of Proton - Bound dimers of Oxygen n - Donor Bases from Ion Cyclotron Resonance Solvent - Exchange Equilibria Measurements, J. Am. Chem. Soc., 1982, 104, 23, 6255, https://doi.org/10.1021/ja00387a016 . [all data]

Grimsrud and Kebarle, 1973
Grimsrud, E.P.; Kebarle, P., Gas Phase Ion Equilibria Studies of the Solvation of the Hydrogen Ion by Methanol, Dimethyl Ether and Water. Effect of Hydrogen Bonding, J. Am. Chem. Soc., 1973, 95, 24, 7939, https://doi.org/10.1021/ja00805a002 . [all data]

Yamdagni and Kebarle, 1976
Yamdagni, R.; Kebarle, P., Gas Phase Basicities and Proton Affinities of Compounds Between Water Ammonia and Substituted Benzenes from a Continuous Ladder of Proton Transfer Equilibrium Measurements, J. Am. Chem. Soc., 1976, 98, 6, 1320, https://doi.org/10.1021/ja00422a005 . [all data]

Wolf, Staley, et al., 1977
Wolf, J.F.; Staley, R.H.; Koppel, I.; Taagepera, M.; McIver, R.T.; Beauchamp, J.L.; Taft, R.W., Gas Phase Basicities and Relative Proton Affinities of Compounds Between Water and Ammonia from Pulsed Ion Cyclotron Resonance Thermal Equilibria Measurements, J. Am. Chem. Soc., 1977, 99, 16, 5417, https://doi.org/10.1021/ja00458a032 . [all data]

Berman and Beauchamp, 1980
Berman, D.W.; Beauchamp, J.L., A Novel Bimolecular Reaction Sequence Yielding H(OH2)2+ at Low Pressures. Ion Cyclotron Resonance Studies of the Reaction of Doubly Solvated Protons, J. Phys. Chem., 1980, 84, 18, 2233, https://doi.org/10.1021/j100455a004 . [all data]

Fehsenfeld, Dotan, et al., 1978
Fehsenfeld, F.C.; Dotan, I.; Albritton, D.L.; Howard, C.J.; Ferguson, E.E., Stratospheric Positive Ion Chemistry of Formaldehyde and Methanol, J. Geophys. Res., 1978, 83, C3, 1333, https://doi.org/10.1029/JC083iC03p01333 . [all data]

Meot-Ner (Mautner), 1992
Meot-Ner (Mautner), M., Intermolecular Forces in Organic Clusters, J. Am. Chem. Soc., 1992, 114, 9, 3312, https://doi.org/10.1021/ja00035a024 . [all data]

Bohme, Mackay, et al., 1979
Bohme, D.K.; Mackay, G.I.; Tanner, S.D., An Experimental Study of the Gas - Phase Kinetics of Reactions with Hydrated H3O+ Ions (n=1 - 3) at 298 K, J. Am. Chem. Soc., 1979, 101, 14, 3724, https://doi.org/10.1021/ja00508a003 . [all data]

Cunningham, Payzant, et al., 1972
Cunningham, A.J.; Payzant, J.D.; Kebarle, P., A Kinetic Study of the Proton Hydrate H+(H2O)n Equilibria in the Gas Phase, J. Am. Chem. Soc., 1972, 94, 22, 7627, https://doi.org/10.1021/ja00777a003 . [all data]

Keesee and Castleman, 1986
Keesee, R.G.; Castleman, A.W., Jr., Thermochemical data on Ggs-phase ion-molecule association and clustering reactions, J. Phys. Chem. Ref. Data, 1986, 15, 1011. [all data]

Larson, Clair, et al., 1982
Larson, J.W.; Clair, R.L.; McMahon, T.B., Bimolecular Production of Proton Bound Dimers in the Gas Phase. A Low Pressure Ion Cyclotron Resonance Technique for Examination of Solvent Exchange Equilibria and Determination of Single Molecule Solvation Energetics, Can. J. Chem., 1982, 60, 4, 542, https://doi.org/10.1139/v82-079 . [all data]

Tanaka, Mackay, et al., 1978
Tanaka, K.; Mackay, G.I.; Bohme, D.K., Rate and Equilibrium Constant Measurements for Gas-Phase Proton-Transfer Reactions Involving H2O, H2S, HCN, and H2CO, Can. J. Chem., 1978, 56, 2, 193, https://doi.org/10.1139/v78-031 . [all data]

Amano and Warner, 1989
Amano, T.; Warner, H.E., Laboratory detection of protonated formaldehyde (H2COH/+/), Astrophys. J., 1989, 342, L99, https://doi.org/10.1086/185494 . [all data]

Mosley, Cheng, et al., 2012
Mosley, J.D.; Cheng, T.C.; McCoy, A.B.; Duncan, M.A., Infrared Spectroscopy of the Mass 31 Cation: Protonated Formaldehyde vs Methoxy, J. Phys. Chem. A, 2012, 116, 37, 9287, https://doi.org/10.1021/jp3072298 . [all data]

Dyke, Ellis, et al., 1984
Dyke, J.M.; Ellis, A.R.; Jonathan, N.; Keddar, N.; Morris, A., Observation of the CH₂OH radical in the gas Ppase by vacuum ultraviolet photoelectron spectroscopy, Chem. Phys. Lett., 1984, 111, 207. [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Chomiak, Taleb-Bendiab, et al., 1994
Chomiak, D.; Taleb-Bendiab, A.; Civis, S.; Amano, T., Millimetre-wave laboratory detection of H, Can. J. Phys., 1994, 72, 11-12, 1078, https://doi.org/10.1139/p94-140 . [all data]

Dore, Cazzoli, et al., 1995
Dore, L.; Cazzoli, G.; Civis, S.; Scappini, F., Extended measurements of the millimeter wave spectrum of H2COH+, Chem. Phys. Lett., 1995, 244, 1-2, 145, https://doi.org/10.1016/0009-2614(95)00816-M . [all data]

Dore, Cazzoli, et al., 1997
Dore, L.; Cazzoli, G.; Civis, S.; Scappini, F., Millimeter-Wave Spectra of H213COH+and D2COD+, J. Mol. Spectrosc., 1997, 183, 1, 107, https://doi.org/10.1006/jmsp.1996.7229 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References

• Symbols used in this document:
  

  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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