Dimethyl ether

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Condensed phase thermochemistry data

Go To: Top, Phase change data, 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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
S°liquid146.57J/mol*KN/AKennedy, Sagenkahn, et al., 1941 

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
102.30240.Kennedy, Sagenkahn, et al., 1941T = 14 to 240 K.

Phase change data

Go To: Top, Condensed phase thermochemistry data, 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil248.2KN/AWeast and Grasselli, 1989BS
Tboil248.3KN/AMajer and Svoboda, 1985 
Tboil248.25KN/AGrosse, 1937Uncertainty assigned by TRC = 1. K; TRC
Tboil249.2KN/AMaass and Boomer, 1922Uncertainty assigned by TRC = 0.4 K; TRC
Tboil249.5KN/AThiele and Schulte, 1920Uncertainty assigned by TRC = 0.6 K; TRC
Quantity Value Units Method Reference Comment
Tfus135.2KN/AMaass and Boomer, 1922Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Ttriple131.64KN/AWilhoit, Chao, et al., 1985Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple131.66KN/AKennedy, Sagenkahn, et al., 1941, 2Uncertainty assigned by TRC = 0.06 K; TRC
Quantity Value Units Method Reference Comment
Tc401. ± 2.KAVGN/AAverage of 12 values; Individual data points
Quantity Value Units Method Reference Comment
Pc54. ± 3.barAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Vc0.164l/molN/AZawisza and Glowka, 1970Uncertainty assigned by TRC = 0.003 l/mol; TRC
Quantity Value Units Method Reference Comment
ρc5.351mol/lN/AEdwards and Maass, 1935Uncertainty assigned by TRC = 0.43 mol/l; TRC
ρc4.895mol/lN/ATapp, Steacie, et al., 1933Uncertainty assigned by TRC = 0.65 mol/l; TRC
ρc5.891mol/lN/ACardoso and Coppola, 1923Uncertainty assigned by TRC = 0.07 mol/l; extraplation of rectilinear diameter, from obs L and G densities, to Tc = 126.9 deg C, from previous literature; TRC
Quantity Value Units Method Reference Comment
ΔvapH°19.3kJ/molN/AMajer and Svoboda, 1985 
ΔvapH°18.5kJ/molN/AAmbrose, Ellender, et al., 1976Based on data from 171. to 248. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
21.510248.34N/AKennedy, Sagenkahn, et al., 1941P = 101.325 kPa; DH
21.51248.3N/AMajer and Svoboda, 1985 
22.6250.AStephenson and Malanowski, 1987Based on data from 183. to 265. K.; AC
22.8234.AStephenson and Malanowski, 1987Based on data from 180. to 249. K.; AC
21.2308.AStephenson and Malanowski, 1987Based on data from 293. to 360. K.; AC
21.1364.AStephenson and Malanowski, 1987Based on data from 349. to 400. K.; AC
22.2256.AStephenson and Malanowski, 1987Based on data from 241. to 303. K.; AC
21.4248.N/AAmbrose, Ellender, et al., 1976Based on data from 171. to 248. K.; AC
22.7233.N/AKennedy, Sagenkahn, et al., 1941Based on data from 195. to 248. K.; AC
21.5 ± 0.1248.CKennedy, Sagenkahn, et al., 1941AC

Entropy of vaporization

ΔvapS (J/mol*K) Temperature (K) Reference Comment
86.61248.34Kennedy, Sagenkahn, et al., 1941P; DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
194.93 to 248.244.11475894.669-30.604Kennedy, Sagenkahn, et al., 1941Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
4.9363131.66Kennedy, Sagenkahn, et al., 1941DH
4.94131.7Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
37.49131.66Kennedy, Sagenkahn, et al., 1941DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:

Reaction thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change 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 as indicated in comments:
RCD - Robert C. Dunbar
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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.

Reactions 1 to 50

Lithium ion (1+) + Dimethyl ether = (Lithium ion (1+) • Dimethyl ether)

By formula: Li+ + C2H6O = (Li+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°165. ± 11.kJ/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°165.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
ΔrH°160.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
ΔrS°110.J/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
ΔrG°131.kJ/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
165. (+10.,-0.) CIDMore, Gledening, et al., 1996gas phase; guided ion beam CID; M

C3H7O2+ + Dimethyl ether = (C3H7O2+ • Dimethyl ether)

By formula: C3H7O2+ + C2H6O = (C3H7O2+ • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°126.kJ/molICRLarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
ΔrS°120.J/mol*KN/ALarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
ΔrG°90.4kJ/molICRLarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

C4H9O2+ + Dimethyl ether = (C4H9O2+ • Dimethyl ether)

By formula: C4H9O2+ + C2H6O = (C4H9O2+ • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°125.kJ/molICRLarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
ΔrS°122.J/mol*KN/ALarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
ΔrG°88.7kJ/molICRLarson and McMahon, 1982gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

(Sodium ion (1+) • Dimethyl ether) + Dimethyl ether = (Sodium ion (1+) • 2Dimethyl ether)

By formula: (Na+ • C2H6O) + C2H6O = (Na+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°85. ± 7.kJ/molAVGN/AAverage of 7 values; Individual data points

Sodium ion (1+) + Dimethyl ether = (Sodium ion (1+) • Dimethyl ether)

By formula: Na+ + C2H6O = (Na+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°100. ± 5.4kJ/molCIDCAmicangelo and Armentrout, 2001Anchor NH3=24.41; RCD
ΔrH°91.6 ± 4.6kJ/molCIDTArmentrout and Rodgers, 2000RCD
ΔrH°92.0 ± 5.0kJ/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°92.9 ± 5.0kJ/molCIDTMore, Ray, et al., 1997RCD

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
73.6298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD
73.6298.CIDCMcMahon and Ohanessian, 2000RCD

C10H10Fe+ + Dimethyl ether = (C10H10Fe+ • Dimethyl ether)

By formula: C10H10Fe+ + C2H6O = (C10H10Fe+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°40.kJ/molPHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M
Quantity Value Units Method Reference Comment
ΔrS°84.J/mol*KN/AMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
15.250.PHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

(CH5O+ • 2Methyl Alcohol) + Dimethyl ether = (CH5O+ • Dimethyl ether • 2Methyl Alcohol)

By formula: (CH5O+ • 2CH4O) + C2H6O = (CH5O+ • C2H6O • 2CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°72.0kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°120.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

(CH5O+ • 3Methyl Alcohol) + Dimethyl ether = (CH5O+ • Dimethyl ether • 3Methyl Alcohol)

By formula: (CH5O+ • 3CH4O) + C2H6O = (CH5O+ • C2H6O • 3CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°57.3kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°129.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

(CH5O+ • Methyl Alcohol) + Dimethyl ether = (CH5O+ • Dimethyl ether • Methyl Alcohol)

By formula: (CH5O+ • CH4O) + C2H6O = (CH5O+ • C2H6O • CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°91.6kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°105.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

C2H7O+ + Dimethyl ether = (C2H7O+ • Dimethyl ether)

By formula: C2H7O+ + C2H6O = (C2H7O+ • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°134.kJ/molPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; M
ΔrH°128.kJ/molPHPMSGrimsrud and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°133.J/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; M
ΔrS°124.J/mol*KPHPMSGrimsrud and Kebarle, 1973gas phase; M

Potassium ion (1+) + Dimethyl ether = (Potassium ion (1+) • Dimethyl ether)

By formula: K+ + C2H6O = (K+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°72.8 ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°92.9kJ/molHPMSDavidson and Kebarle, 1976gas phase; M
ΔrH°87.0kJ/molHPMSDavidson and Kebarle, 1976, 2gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°112.J/mol*KHPMSDavidson and Kebarle, 1976gas phase; M
ΔrS°104.J/mol*KHPMSDavidson and Kebarle, 1976, 2gas phase; M

CH5O+ + Dimethyl ether = (CH5O+ • Dimethyl ether)

By formula: CH5O+ + C2H6O = (CH5O+ • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°146.kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be ((CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°103.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be ((CH3)2OH+; M

(C2H7O+ • Dimethyl ether • 2Water) + Dimethyl ether = (C2H7O+ • 2Dimethyl ether • 2Water)

By formula: (C2H7O+ • C2H6O • 2H2O) + C2H6O = (C2H7O+ • 2C2H6O • 2H2O)

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

Quantity Value Units Method Reference Comment
ΔrH°66.1kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrS°153.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M

(C2H7O+ • Dimethyl ether) + Water = (C2H7O+ • Water • Dimethyl ether)

By formula: (C2H7O+ • C2H6O) + H2O = (C2H7O+ • H2O • C2H6O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
ΔrH°68.2kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrS°162.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M

(C2H7O+ • Dimethyl ether • Water) + Dimethyl ether = (C2H7O+ • 2Dimethyl ether • Water)

By formula: (C2H7O+ • C2H6O • H2O) + C2H6O = (C2H7O+ • 2C2H6O • H2O)

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

Quantity Value Units Method Reference Comment
ΔrH°70.3kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°111.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 2Dimethyl ether • Water) + Dimethyl ether = (C2H7O+ • 3Dimethyl ether • Water)

By formula: (C2H7O+ • 2C2H6O • H2O) + C2H6O = (C2H7O+ • 3C2H6O • H2O)

Bond type: Hydrogen bonds between protonated and neutral organics

Quantity Value Units Method Reference Comment
ΔrH°90.8kJ/molPHPMSTholman, Tonner, et al., 1994gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°174.J/mol*KPHPMSTholman, Tonner, et al., 1994gas phase; M

(C2H7O+ • 2Methyl Alcohol • Dimethyl ether) + Methyl Alcohol = (C2H7O+ • 3Methyl Alcohol • Dimethyl ether)

By formula: (C2H7O+ • 2CH4O • C2H6O) + CH4O = (C2H7O+ • 3CH4O • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°51.0kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°111.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Methyl Alcohol • Dimethyl ether) + Methyl Alcohol = (C2H7O+ • 2Methyl Alcohol • Dimethyl ether)

By formula: (C2H7O+ • CH4O • C2H6O) + CH4O = (C2H7O+ • 2CH4O • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°63.2kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°128.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Water • 2Dimethyl ether) + Water = (C2H7O+ • 2Water • 2Dimethyl ether)

By formula: (C2H7O+ • H2O • 2C2H6O) + H2O = (C2H7O+ • 2H2O • 2C2H6O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
ΔrH°47.7kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°127.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Water • 3Dimethyl ether) + Water = (C2H7O+ • 2Water • 3Dimethyl ether)

By formula: (C2H7O+ • H2O • 3C2H6O) + H2O = (C2H7O+ • 2H2O • 3C2H6O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
ΔrH°47.7kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°127.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 2Water • Dimethyl ether) + Water = (C2H7O+ • 3Water • Dimethyl ether)

By formula: (C2H7O+ • 2H2O • C2H6O) + H2O = (C2H7O+ • 3H2O • C2H6O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
ΔrH°48.5kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°112.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 2Water) + Dimethyl ether = (C2H7O+ • Dimethyl ether • 2Water)

By formula: (C2H7O+ • 2H2O) + C2H6O = (C2H7O+ • C2H6O • 2H2O)

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

Quantity Value Units Method Reference Comment
ΔrH°68.6kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°95.4J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 3Water) + Dimethyl ether = (C2H7O+ • Dimethyl ether • 3Water)

By formula: (C2H7O+ • 3H2O) + C2H6O = (C2H7O+ • C2H6O • 3H2O)

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

Quantity Value Units Method Reference Comment
ΔrH°70.7kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°138.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Water • Dimethyl ether) + Water = (C2H7O+ • 2Water • Dimethyl ether)

By formula: (C2H7O+ • H2O • C2H6O) + H2O = (C2H7O+ • 2H2O • C2H6O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
ΔrH°56.9kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°103.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Water) + Dimethyl ether = (C2H7O+ • Dimethyl ether • Water)

By formula: (C2H7O+ • H2O) + C2H6O = (C2H7O+ • C2H6O • H2O)

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

Quantity Value Units Method Reference Comment
ΔrH°77.4kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°110.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 2Methyl Alcohol) + Dimethyl ether = (C2H7O+ • Dimethyl ether • 2Methyl Alcohol)

By formula: (C2H7O+ • 2CH4O) + C2H6O = (C2H7O+ • C2H6O • 2CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°69.5kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°133.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • 3Methyl Alcohol) + Dimethyl ether = (C2H7O+ • Dimethyl ether • 3Methyl Alcohol)

By formula: (C2H7O+ • 3CH4O) + C2H6O = (C2H7O+ • C2H6O • 3CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°52.3kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°107.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Dimethyl ether) + Methyl Alcohol = (C2H7O+ • Methyl Alcohol • Dimethyl ether)

By formula: (C2H7O+ • C2H6O) + CH4O = (C2H7O+ • CH4O • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°75.7kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°128.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Methyl Alcohol) + Dimethyl ether = (C2H7O+ • Dimethyl ether • Methyl Alcohol)

By formula: (C2H7O+ • CH4O) + C2H6O = (C2H7O+ • C2H6O • CH4O)

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

Quantity Value Units Method Reference Comment
ΔrH°84.5kJ/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°125.J/mol*KPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M

(C2H7O+ • Dimethyl ether) + Dimethyl ether = (C2H7O+ • 2Dimethyl ether)

By formula: (C2H7O+ • C2H6O) + C2H6O = (C2H7O+ • 2C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°42.3kJ/molPHPMSGrimsrud and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°117.J/mol*KPHPMSGrimsrud and Kebarle, 1973gas phase; M

CH6N+ + Dimethyl ether = (CH6N+ • Dimethyl ether)

By formula: CH6N+ + C2H6O = (CH6N+ • C2H6O)

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

Quantity Value Units Method Reference Comment
ΔrH°90.0kJ/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°123.J/mol*KPHPMSMeot-Ner, 1984gas phase; M

(Lithium ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Lithium ion (1+) • 3Dimethyl ether)

By formula: (Li+ • 2C2H6O) + C2H6O = (Li+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°89.1 ± 7.9kJ/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
110. (+5.9,-0.) CIDMore, Gledening, et al., 1996gas phase; guided ion beam CID; M

(Lithium ion (1+) • 3Dimethyl ether) + Dimethyl ether = (Lithium ion (1+) • 4Dimethyl ether)

By formula: (Li+ • 3C2H6O) + C2H6O = (Li+ • 4C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°68. ± 10.kJ/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
95.4 (+6.7,-0.) CIDMore, Gledening, et al., 1996gas phase; guided ion beam CID; M

(Lithium ion (1+) • Dimethyl ether) + Dimethyl ether = (Lithium ion (1+) • 2Dimethyl ether)

By formula: (Li+ • C2H6O) + C2H6O = (Li+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°121. ± 5.9kJ/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kJ/mol) T (K) Method Reference Comment
130. (+4.,-0.) CIDMore, Gledening, et al., 1996gas phase; guided ion beam CID; M

Chlorine anion + Dimethyl ether = C2H6ClO-

By formula: Cl- + C2H6O = C2H6ClO-

Quantity Value Units Method Reference Comment
ΔrH°31.4 ± 1.7kJ/molTDAsBogdanov, Lee, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°12. ± 4.2kJ/molTDAsBogdanov, Lee, et al., 2001gas phase; B

C2H5O- + Hydrogen cation = Dimethyl ether

By formula: C2H5O- + H+ = C2H6O

Quantity Value Units Method Reference Comment
ΔrH°1703. ± 8.4kJ/molBranDePuy, Bierbaum, et al., 1984gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°1666. ± 9.2kJ/molH-TSDePuy, Bierbaum, et al., 1984gas phase; B

(Sodium ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Sodium ion (1+) • 3Dimethyl ether)

By formula: (Na+ • 2C2H6O) + C2H6O = (Na+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°69.9 ± 5.0kJ/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°66.9 ± 5.0kJ/molCIDTMore, Ray, et al., 1997RCD

(Sodium ion (1+) • 3Dimethyl ether) + Dimethyl ether = (Sodium ion (1+) • 4Dimethyl ether)

By formula: (Na+ • 3C2H6O) + C2H6O = (Na+ • 4C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°61.1 ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°58.2 ± 4.2kJ/molCIDTMore, Ray, et al., 1997RCD

(Potassium ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Potassium ion (1+) • 3Dimethyl ether)

By formula: (K+ • 2C2H6O) + C2H6O = (K+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°56.9 ± 4.2kJ/molCIDTRodgers and Armentrout, 2000RCD

(Potassium ion (1+) • 3Dimethyl ether) + Dimethyl ether = (Potassium ion (1+) • 4Dimethyl ether)

By formula: (K+ • 3C2H6O) + C2H6O = (K+ • 4C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°50.2 ± 7.9kJ/molCIDTRodgers and Armentrout, 2000RCD

(Cesium ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Cesium ion (1+) • 3Dimethyl ether)

By formula: (Cs+ • 2C2H6O) + C2H6O = (Cs+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°40. ± 9.2kJ/molCIDTRodgers and Armentrout, 2000RCD

(Cesium ion (1+) • Dimethyl ether) + Dimethyl ether = (Cesium ion (1+) • 2Dimethyl ether)

By formula: (Cs+ • C2H6O) + C2H6O = (Cs+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°46.9 ± 5.9kJ/molCIDTRodgers and Armentrout, 2000RCD

(Rubidium ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Rubidium ion (1+) • 3Dimethyl ether)

By formula: (Rb+ • 2C2H6O) + C2H6O = (Rb+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°37. ± 11.kJ/molCIDTRodgers and Armentrout, 2000RCD

(Rubidium ion (1+) • Dimethyl ether) + Dimethyl ether = (Rubidium ion (1+) • 2Dimethyl ether)

By formula: (Rb+ • C2H6O) + C2H6O = (Rb+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°54.8 ± 5.0kJ/molCIDTRodgers and Armentrout, 2000RCD

(Potassium ion (1+) • Dimethyl ether) + Dimethyl ether = (Potassium ion (1+) • 2Dimethyl ether)

By formula: (K+ • C2H6O) + C2H6O = (K+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°69.0 ± 5.0kJ/molCIDTRodgers and Armentrout, 2000RCD

(Copper ion (1+) • 2Dimethyl ether) + Dimethyl ether = (Copper ion (1+) • 3Dimethyl ether)

By formula: (Cu+ • 2C2H6O) + C2H6O = (Cu+ • 3C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°54.8 ± 4.2kJ/molCIDTKoizumi, 2001RCD

(Copper ion (1+) • 3Dimethyl ether) + Dimethyl ether = (Copper ion (1+) • 4Dimethyl ether)

By formula: (Cu+ • 3C2H6O) + C2H6O = (Cu+ • 4C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°45. ± 10.kJ/molCIDTKoizumi, 2001RCD

(Copper ion (1+) • Dimethyl ether) + Dimethyl ether = (Copper ion (1+) • 2Dimethyl ether)

By formula: (Cu+ • C2H6O) + C2H6O = (Cu+ • 2C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°193. ± 7.9kJ/molCIDTKoizumi, 2001RCD

Cesium ion (1+) + Dimethyl ether = (Cesium ion (1+) • Dimethyl ether)

By formula: Cs+ + C2H6O = (Cs+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°56.9 ± 5.0kJ/molCIDTRodgers and Armentrout, 2000RCD

Rubidium ion (1+) + Dimethyl ether = (Rubidium ion (1+) • Dimethyl ether)

By formula: Rb+ + C2H6O = (Rb+ • C2H6O)

Quantity Value Units Method Reference Comment
ΔrH°61.9 ± 9.2kJ/molCIDTRodgers and Armentrout, 2000RCD

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

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

Kennedy, Sagenkahn, et al., 1941
Kennedy, R.M.; Sagenkahn, M.; Aston, J.G., The heat capacity and entropy, heats of fusion and vaporization, and the vapor pressure of dimethyl ether. The density of gaseous dimethyl ether, J. Am. Chem. Soc., 1941, 63, 2267-2272. [all data]

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Maass and Boomer, 1922
Maass, O.; Boomer, E.H., Vapor Densities at Low Pressures and Over and Extended Temperature Range. I. The Properties of Ethylene Oxide Compared to Oxygen Compounds of Similar Molecular Weight, J. Am. Chem. Soc., 1922, 44, 8, 1709-1728, https://doi.org/10.1021/ja01429a013 . [all data]

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Kennedy, Sagenkahn, et al., 1941, 2
Kennedy, R.M.; Sagenkahn, M.; Aston, J.G., The Heat Capacity and Entropy, Heats of Fusion and Vaporization and the Vapor Pressure of Dimethyl Ether. The Density of Gaseous Dimethyl Ether, J. Am. Chem. Soc., 1941, 63, 2267-72. [all data]

Zawisza and Glowka, 1970
Zawisza, A.C.; Glowka, S., Liquid-vapour equilibria and thermodynamic functions of dimethyl ether - sulphur dioxide system up to 300c and 77.81 atmospheres, Bull. Acad. Pol. Sci., Ser. Sci. Chim., 1970, 18, 549-54. [all data]

Edwards and Maass, 1935
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Cardoso and Coppola, 1923
Cardoso, E.; Coppola, A.A., Experimental researches on some thermal properties of gas I the densities of coexisting phases of methyl ether, J. Chim. Phys. Phys.-Chim. Biol., 1923, 20, 337-46. [all data]

Ambrose, Ellender, et al., 1976
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S.; Townsend, R., Thermodynamic properties of organic oxygen compounds XLIII. Vapour pressures of some ethers, The Journal of Chemical Thermodynamics, 1976, 8, 2, 165-178, https://doi.org/10.1016/0021-9614(76)90090-2 . [all data]

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Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

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Dzidic and Kebarle, 1970
Dzidic, I.; Kebarle, P., Hydration of the Alkali Ions in the Gas Phase. Enthalpies and Entropies of Reactions M+(H2O)n-1 + H2O = M+(H2O)n, J. Phys. Chem., 1970, 74, 7, 1466, https://doi.org/10.1021/j100702a013 . [all data]

Staley and Beauchamp, 1975
Staley, R.H.; Beauchamp, J.L., Intrinsic Acid - Base Properties of Molecules. Binding Energies of Li+ to pi - and n - Donor Bases, J. Am. Chem. Soc., 1975, 97, 20, 5920, https://doi.org/10.1021/ja00853a050 . [all data]

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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]

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Davidson, W.R.; Kebarle, P., Binding Energies and Stabilities of Potassium Ion Complexes with Ethylene Diamine and Dimethoxyethane (Glyme) from Measurements of the Complexing Equilibria in the Gas Phase, Can. J. Chem., 1976, 54, 16, 2594, https://doi.org/10.1139/v76-368 . [all data]

Davidson and Kebarle, 1976, 2
Davidson, W.R.; Kebarle, P., Binding Energies and Stabilities of Potassium Ion Complexes from Studies of Gas Phase Ion Equilibria K+ + M = K+.M, J. Am. Chem. Soc., 1976, 98, 20, 6133, https://doi.org/10.1021/ja00436a011 . [all data]

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Tholman, D.; Tonner, D.S.; McMahon, T.B., Spontaneous Unimolecular Dissociation of Small Cluster Ions, (H3O)+(L)n and Cl-(H2O)n (n = 2-4), under Fourier Transform Ion Cyclotron Resonance Conditions, J. Phys. Chem., 1994, 98, 8, 2002, https://doi.org/10.1021/j100059a002 . [all data]

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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]

Bogdanov, Lee, et al., 2001
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Koizumi, 2001
Koizumi, H., Collision-Induced Dissociation and Theoretical Studies of Cu+-Dimethyl Ether Complexes, J.Phys. Chem. A, 2001, 105, 11, 2444, https://doi.org/10.1021/jp003509p . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References