MeO anion


Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

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

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

CH3O- + Hydrogen cation = Methyl Alcohol

By formula: CH3O- + H+ = CH4O

Quantity Value Units Method Reference Comment
Δr1597. ± 8.kJ/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Δr1573.3 ± 2.6kJ/molH-TSNee, Osterwalder, et al., 2006gas phase; B
Δr1573.4 ± 2.3kJ/molH-TSOsborn, Leahy, et al., 1998gas phase; B
Δr1565. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B
Δr1567. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; B
Δr1569.4 ± 2.5kJ/molTDEqMeot-ner and Sieck, 1986gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B

CH3O- + Methyl Alcohol = (CH3O- • Methyl Alcohol)

By formula: CH3O- + CH4O = (CH3O- • CH4O)

Quantity Value Units Method Reference Comment
Δr123. ± 4.2kJ/molTDAsPaul and Kebarle, 1990gas phase; B,M
Δr120.5 ± 1.3kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B,M
Δr123. ± 10.kJ/molTDAsCaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Δr79.5 ± 8.4kJ/molN/AMoylan, Dodd, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr133.J/mol*KPHPMSPaul and Kebarle, 1990gas phase; M
Δr112.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr84.94kJ/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Δr82.8 ± 4.2kJ/molTDAsPaul and Kebarle, 1990gas phase; B
Δr87.0 ± 2.1kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B
Δr84.9 ± 6.7kJ/molTDAsCaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
79.9296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Water = (CH3O- • Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr106. ± 9.2kJ/molCIDTDeTuri and Ervin, 1999gas phase; B
Δr100.kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M,B,M
Quantity Value Units Method Reference Comment
Δr95.8J/mol*KPHPMSMeot-ner and Sieck, 1986gas phase; M
Δr95.8J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr71.1 ± 1.3kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
64.4296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)H2O, DG>; Meot-Ner(Mautner), 1986; M

(CH3O- • 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- • 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Δr166.9 ± 2.1kJ/molN/ANee, Osterwalder, et al., 2006gas phase; B
Δr171. ± 4.6kJ/molTherOsborn, Leahy, et al., 1998gas phase; B
Δr175. ± 9.2kJ/molTherBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B

(CH3O- • 2Water) + Water = (CH3O- • 3Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr61.9kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr102.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
33.296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)3H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • Water) + Water = (CH3O- • 2Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr80.3kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr106.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
34.296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)2H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Methanol-D4 = C2H4D7O2-

By formula: CH3O- + CD4O = C2H4D7O2-

Quantity Value Units Method Reference Comment
Δr118. ± 4.2kJ/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B
Quantity Value Units Method Reference Comment
Δr86.6 ± 4.2kJ/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B

(CH3O- • Water • Methyl Alcohol) + Water = (CH3O- • 2Water • Methyl Alcohol)

By formula: (CH3O- • H2O • CH4O) + H2O = (CH3O- • 2H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr63.6kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr116.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 2Methyl Alcohol) + Water = (CH3O- • Water • 2Methyl Alcohol)

By formula: (CH3O- • 2CH4O) + H2O = (CH3O- • H2O • 2CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr57.7kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr105.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • Methyl Alcohol) + Water = (CH3O- • Water • Methyl Alcohol)

By formula: (CH3O- • CH4O) + H2O = (CH3O- • H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr74.5kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr108.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 3Water) + Water = (CH3O- • 4Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr46.0kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr83.7J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Fluoroform = C2H4F3O-

By formula: CH3O- + CHF3 = C2H4F3O-

Quantity Value Units Method Reference Comment
Δr98.3 ± 4.2kJ/molIMREChabinyc and Brauman, 1998gas phase; B
Quantity Value Units Method Reference Comment
Δr69.5 ± 4.2kJ/molIMREChabinyc and Brauman, 1998gas phase; B

(CH3O- • Water) + Methyl Alcohol = (CH3O- • Methyl Alcohol • Water)

By formula: (CH3O- • H2O) + CH4O = (CH3O- • CH4O • H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
57.3296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)2H2O; Meot-Ner(Mautner), 1986; M

CH3O- + Boron trifluoride = (CH3O- • Boron trifluoride)

By formula: CH3O- + BF3 = (CH3O- • BF3)

Quantity Value Units Method Reference Comment
Δr>92.0 ± 8.4kJ/molIMRBBlair, Isolani, et al., 1973gas phase; MeOH..MeO- + BF3 ->. Computations indicate dHaff ca. 80 kcal/mol; B

(CH3O- • 2Methyl Alcohol) + Methyl Alcohol = (CH3O- • 3Methyl Alcohol)

By formula: (CH3O- • 2CH4O) + CH4O = (CH3O- • 3CH4O)

Quantity Value Units Method Reference Comment
Δr62.8kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 3Methyl Alcohol) + Methyl Alcohol = (CH3O- • 4Methyl Alcohol)

By formula: (CH3O- • 3CH4O) + CH4O = (CH3O- • 4CH4O)

Quantity Value Units Method Reference Comment
Δr47.7kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr93.7J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • Methyl Alcohol) + Methyl Alcohol = (CH3O- • 2Methyl Alcohol)

By formula: (CH3O- • CH4O) + CH4O = (CH3O- • 2CH4O)

Quantity Value Units Method Reference Comment
Δr89.5kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr116.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Trifluorophenylsilane = C7H8F3OSi-

By formula: CH3O- + C6H5F3Si = C7H8F3OSi-

Quantity Value Units Method Reference Comment
Δr320. ± 25.kJ/molCIDTKrouse, Lardin, et al., 2003gas phase; B

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, 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: John E. Bartmess

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
1.5690 ± 0.0019LPESNee, Osterwalder, et al., 2006 
1.5720 ± 0.0040LPESRamond, Davico, et al., 2000 
1.5680 ± 0.0050LPESOsborn, Leahy, et al., 1998 
1.685 ± 0.094D-EABartmess, Scott, et al., 1979The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale
1.570 ± 0.022LPESEngleking, Ellison, et al., 1978Confirmed by high level calculations: Hiraoka, Shimizu, et al., 1995
1.591 ± 0.040PDJanousek, Zimmerman, et al., 1978 
<1.591 ± 0.039PDReed and Brauman, 1975 
2.59998EIAETsuda and Hamill, 1964From MeOMe
0.3816SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.

Protonation reactions

CH3O- + Hydrogen cation = Methyl Alcohol

By formula: CH3O- + H+ = CH4O

Quantity Value Units Method Reference Comment
Δr1597. ± 8.kJ/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Δr1573.3 ± 2.6kJ/molH-TSNee, Osterwalder, et al., 2006gas phase
Δr1573.4 ± 2.3kJ/molH-TSOsborn, Leahy, et al., 1998gas phase
Δr1565. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale
Δr1567. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Δr1569.4 ± 2.5kJ/molTDEqMeot-ner and Sieck, 1986gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O

Ion clustering data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

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

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

CH3O- + Boron trifluoride = (CH3O- • Boron trifluoride)

By formula: CH3O- + BF3 = (CH3O- • BF3)

Quantity Value Units Method Reference Comment
Δr>92.0 ± 8.4kJ/molIMRBBlair, Isolani, et al., 1973gas phase; MeOH..MeO- + BF3 ->. Computations indicate dHaff ca. 80 kcal/mol; B

CH3O- + Methanol-D4 = C2H4D7O2-

By formula: CH3O- + CD4O = C2H4D7O2-

Quantity Value Units Method Reference Comment
Δr118. ± 4.2kJ/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B
Quantity Value Units Method Reference Comment
Δr86.6 ± 4.2kJ/molIMREChabinyc and Brauman, 2000gas phase; Original dG=19.4 at 350K; dS based on symmetry alone.; B

CH3O- + Fluoroform = C2H4F3O-

By formula: CH3O- + CHF3 = C2H4F3O-

Quantity Value Units Method Reference Comment
Δr98.3 ± 4.2kJ/molIMREChabinyc and Brauman, 1998gas phase; B
Quantity Value Units Method Reference Comment
Δr69.5 ± 4.2kJ/molIMREChabinyc and Brauman, 1998gas phase; B

(CH3O- • 4294967295Formaldehyde) + Formaldehyde = CH3O-

By formula: (CH3O- • 4294967295CH2O) + CH2O = CH3O-

Quantity Value Units Method Reference Comment
Δr166.9 ± 2.1kJ/molN/ANee, Osterwalder, et al., 2006gas phase; B
Δr171. ± 4.6kJ/molTherOsborn, Leahy, et al., 1998gas phase; B
Δr175. ± 9.2kJ/molTherBartmess, Scott, et al., 1979gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B

CH3O- + Methyl Alcohol = (CH3O- • Methyl Alcohol)

By formula: CH3O- + CH4O = (CH3O- • CH4O)

Quantity Value Units Method Reference Comment
Δr123. ± 4.2kJ/molTDAsPaul and Kebarle, 1990gas phase; B,M
Δr120.5 ± 1.3kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B,M
Δr123. ± 10.kJ/molTDAsCaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Δr79.5 ± 8.4kJ/molN/AMoylan, Dodd, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr133.J/mol*KPHPMSPaul and Kebarle, 1990gas phase; M
Δr112.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr84.94kJ/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Δr82.8 ± 4.2kJ/molTDAsPaul and Kebarle, 1990gas phase; B
Δr87.0 ± 2.1kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B
Δr84.9 ± 6.7kJ/molTDAsCaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
79.9296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • Methyl Alcohol) + Methyl Alcohol = (CH3O- • 2Methyl Alcohol)

By formula: (CH3O- • CH4O) + CH4O = (CH3O- • 2CH4O)

Quantity Value Units Method Reference Comment
Δr89.5kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr116.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 2Methyl Alcohol) + Methyl Alcohol = (CH3O- • 3Methyl Alcohol)

By formula: (CH3O- • 2CH4O) + CH4O = (CH3O- • 3CH4O)

Quantity Value Units Method Reference Comment
Δr62.8kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 3Methyl Alcohol) + Methyl Alcohol = (CH3O- • 4Methyl Alcohol)

By formula: (CH3O- • 3CH4O) + CH4O = (CH3O- • 4CH4O)

Quantity Value Units Method Reference Comment
Δr47.7kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr93.7J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • Methyl Alcohol) + Water = (CH3O- • Water • Methyl Alcohol)

By formula: (CH3O- • CH4O) + H2O = (CH3O- • H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr74.5kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr108.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • 2Methyl Alcohol) + Water = (CH3O- • Water • 2Methyl Alcohol)

By formula: (CH3O- • 2CH4O) + H2O = (CH3O- • H2O • 2CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr57.7kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr105.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

CH3O- + Trifluorophenylsilane = C7H8F3OSi-

By formula: CH3O- + C6H5F3Si = C7H8F3OSi-

Quantity Value Units Method Reference Comment
Δr320. ± 25.kJ/molCIDTKrouse, Lardin, et al., 2003gas phase; B

CH3O- + Water = (CH3O- • Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr106. ± 9.2kJ/molCIDTDeTuri and Ervin, 1999gas phase; B
Δr100.kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M,B,M
Quantity Value Units Method Reference Comment
Δr95.8J/mol*KPHPMSMeot-ner and Sieck, 1986gas phase; M
Δr95.8J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr71.1 ± 1.3kJ/molTDAsMeot-ner and Sieck, 1986gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
64.4296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)H2O, DG>; Meot-Ner(Mautner), 1986; M

(CH3O- • Water) + Methyl Alcohol = (CH3O- • Methyl Alcohol • Water)

By formula: (CH3O- • H2O) + CH4O = (CH3O- • CH4O • H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
57.3296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(CH3O-)2H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • Water • Methyl Alcohol) + Water = (CH3O- • 2Water • Methyl Alcohol)

By formula: (CH3O- • H2O • CH4O) + H2O = (CH3O- • 2H2O • CH4O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr63.6kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr116.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

(CH3O- • Water) + Water = (CH3O- • 2Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr80.3kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr106.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
34.296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)2H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • 2Water) + Water = (CH3O- • 3Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr61.9kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr102.J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
33.296.FAMacKay and Bohme, 1978gas phase; From thermochemical cycle,switching reaction(OH-)3H2O; Meot-Ner(Mautner), 1986; M

(CH3O- • 3Water) + Water = (CH3O- • 4Water)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr46.0kJ/molPHPMSMeot-Ner(Mautner), 1986gas phase; n; M
Quantity Value Units Method Reference Comment
Δr83.7J/mol*KPHPMSMeot-Ner(Mautner), 1986gas phase; n; M

Vibrational and/or electronic energy levels

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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:   ?


 Energy 
 (cm-1
 Med.   Transition   λmin 
 (nm) 
 λmax 
 (nm) 
 References

Td = 12655 ± 15 gas Engleking, Ellison, et al., 1978
Osborn, Leahy, et al., 1998, 2
Ramond, Davico, et al., 2000, 2
Nee, Osterwalder, et al., 2006

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 3 1113 gas TPE Nee, Osterwalder, et al., 2006
e 6 1120 gas TPE Nee, Osterwalder, et al., 2006

Additional references: Jacox, 1994, page 242; Jacox, 2003, page 260; Oakes, Harding, et al., 1985

Notes

dPhotodissociation threshold

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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.

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Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References