Dimethyl ether

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Gas phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
ΔfH°gas-43.99 ± 0.12kcal/molCcbPilcher, Pell, et al., 1964ALS
Quantity Value Units Method Reference Comment
ΔcH°gas-349.04 ± 0.11kcal/molCcbPilcher, Pell, et al., 1964Corresponding ΔfHºgas = -44.01 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
10.10100.Chao J., 1986p=1 bar. Selected values are in close agreement with other statistically calculated values [ Handi M.A., 1954, Seha Z., 1955, Banerjee S.C., 1964, Stull D.R., 1969] and ab initio result [ East A.L.L., 1997] at low temperatures. Discrepancies in S(1000 K) and Cp(1000 K) amount to about 5 and 3 J/mol*K, respectively, for [ Handi M.A., 1954, Banerjee S.C., 1964, Stull D.R., 1969].; GT
11.71150.
13.02200.
14.95273.15
15.67 ± 0.02298.15
15.73300.
18.80400.
21.84500.
24.584600.
27.015700.
29.156800.
31.033900.
32.6721000.
34.1041100.
35.3471200.
36.4271300.
37.3691400.
38.1861500.
39.8111750.
40.9892000.
41.8622250.
42.5222500.
43.0282750.
43.4273000.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
14.82272.20Kistiakowsky G.B., 1940GT
15.75300.76
16.81333.25
17.96370.42

Condensed phase thermochemistry data

Go To: Top, Gas 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 by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
S°liquid35.031cal/mol*KN/AKennedy, Sagenkahn, et al., 1941 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
24.450240.Kennedy, Sagenkahn, et al., 1941T = 14 to 240 K.

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase 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:
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°39.4 ± 2.6kcal/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°39.5kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M
ΔrH°39.kcal/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity Value Units Method Reference Comment
ΔrS°27.cal/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°31.3kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 extrapolated; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
39.4 (+2.5,-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°30.2kcal/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°28.8cal/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°21.6kcal/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°29.9kcal/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°29.1cal/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°21.2kcal/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°20. ± 2.kcal/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°24.0 ± 1.3kcal/molCIDCAmicangelo and Armentrout, 2001Anchor NH3=24.41; RCD
ΔrH°21.9 ± 1.1kcal/molCIDTArmentrout and Rodgers, 2000RCD
ΔrH°22.0 ± 1.2kcal/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°22.2 ± 1.2kcal/molCIDTMore, Ray, et al., 1997RCD

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
17.6298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD
17.6298.CIDCMcMahon and Ohanessian, 2000RCD

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

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

Quantity Value Units Method Reference Comment
ΔrH°9.kcal/molPHPMSMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M
Quantity Value Units Method Reference Comment
ΔrS°20.cal/mol*KN/AMeot-Ner (Mautner), 1989gas phase; Entropy change calculated or estimated, ΔrH<, DG<; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
3.7250.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°17.2kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°28.6cal/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°13.7kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°30.8cal/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°21.9kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°25.2cal/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°32.0kcal/molPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; M
ΔrH°30.7kcal/molPHPMSGrimsrud and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°31.9cal/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; M
ΔrS°29.6cal/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°17.4 ± 1.0kcal/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°22.2kcal/molHPMSDavidson and Kebarle, 1976gas phase; M
ΔrH°20.8kcal/molHPMSDavidson and Kebarle, 1976, 2gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°26.8cal/mol*KHPMSDavidson and Kebarle, 1976gas phase; M
ΔrS°24.8cal/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°35.0kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, note proton affinities, core ion may be ((CH3)2OH+; M
Quantity Value Units Method Reference Comment
ΔrS°24.7cal/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°15.8kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrS°36.5cal/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°16.3kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrS°38.8cal/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°16.8kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°26.6cal/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°21.7kcal/molPHPMSTholman, Tonner, et al., 1994gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°41.6cal/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°12.2kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°26.5cal/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°15.1kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°30.6cal/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°11.4kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°30.3cal/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°11.4kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°30.3cal/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°11.6kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°26.8cal/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°16.4kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°22.8cal/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°16.9kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°32.9cal/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°13.6kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°24.6cal/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°18.5kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°26.3cal/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°16.6kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°31.8cal/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°12.5kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°25.6cal/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°18.1kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°30.6cal/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°20.2kcal/molPHPMSHiraoka, Grimsrud, et al., 1974gas phase; n; M
Quantity Value Units Method Reference Comment
ΔrS°29.8cal/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°10.1kcal/molPHPMSGrimsrud and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°27.9cal/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°21.5kcal/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°29.3cal/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°21.3 ± 1.9kcal/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
26.3 (+1.4,-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°16.3 ± 2.4kcal/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
22.8 (+1.6,-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°28.9 ± 1.4kcal/molCIDTRodgers and Armentrout, 2000RCD

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
31.1 (+0.9,-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°7.50 ± 0.40kcal/molTDAsBogdanov, Lee, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°2.9 ± 1.0kcal/molTDAsBogdanov, Lee, et al., 2001gas phase; B

C2H5O- + Hydrogen cation = Dimethyl ether

By formula: C2H5O- + H+ = C2H6O

Quantity Value Units Method Reference Comment
ΔrH°407.0 ± 2.0kcal/molBranDePuy, Bierbaum, et al., 1984gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°398.2 ± 2.2kcal/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°16.7 ± 1.2kcal/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°16.0 ± 1.2kcal/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°14.6 ± 1.0kcal/molCIDTRodgers and Armentrout, 2000RCD
ΔrH°13.9 ± 1.0kcal/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°13.6 ± 1.0kcal/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°12.0 ± 1.9kcal/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°9.6 ± 2.2kcal/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°11.2 ± 1.4kcal/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°8.8 ± 2.6kcal/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°13.1 ± 1.2kcal/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°16.5 ± 1.2kcal/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°13.1 ± 1.0kcal/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°10.8 ± 2.4kcal/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°46.1 ± 1.9kcal/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°13.6 ± 1.2kcal/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°14.8 ± 2.2kcal/molCIDTRodgers and Armentrout, 2000RCD

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry 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.

Pilcher, Pell, et al., 1964
Pilcher, G.; Pell, A.S.; Coleman, D.J., Measurements of heats of combustion by flame calorimetry. Part 2-Dimethyl ether, methyl ethyl ether, methyl n-propyl ether, methyl isopropyl ether, Trans. Faraday Soc., 1964, 60, 499-505. [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]

Handi M.A., 1954
Handi M.A., Molecular spectroscopy. Determination and interpretation of fundamental frequencies of dimethyl ether from infrared absorption spectrum; application for thermodynamic functions calculation, Compt. Rend. Acad. Sci., 1954, 239, 349-351. [all data]

Seha Z., 1955
Seha Z., Thermodynamic functions of dimethyl ether, Chem. Listy, 1955, 49, 1569-1570. [all data]

Banerjee S.C., 1964
Banerjee S.C., Thermodynamic properties of organic compounds. Part 1. Normal symmetrical aliphatic ethers, Brit. Chem. Eng., 1964, 9, 311-313. [all data]

Stull D.R., 1969
Stull D.R., Jr., The Chemical Thermodynamics of Organic Compounds. Wiley, New York, 1969. [all data]

East A.L.L., 1997
East A.L.L., Ab initio statistical thermodynamical models for the computation of third-law entropies, J. Chem. Phys., 1997, 106, 6655-6674. [all data]

Kistiakowsky G.B., 1940
Kistiakowsky G.B., Gaseous heat capacities. III, J. Chem. Phys., 1940, 8, 618-622. [all data]

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]

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]

Woodin and Beauchamp, 1978
Woodin, R.L.; Beauchamp, J.L., Bonding of Li+ to Lewis Bases in the Gas Phase. Reversals in Methyl Substituent Effects for Different Reference Acids, J. Am. Chem. Soc., 1978, 100, 2, 501, https://doi.org/10.1021/ja00470a024 . [all data]

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]

More, Gledening, et al., 1996
More, M.B.; Gledening, E.D.; Ray, D.; Feller, D.; Armentrout, P.B., Cation-Ether Complexes in the Gas Phase: Bond Dissociation Energies and Equilibrium Structures of Li+[O(CH3)2]x, x=1-4, J. Phys. Chem., 1996, 100, 5, 1605, https://doi.org/10.1021/jp9523175 . [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]

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]

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]

Amicangelo and Armentrout, 2001
Amicangelo, J.C.; Armentrout, P.B., Relative and Absolute Bond Dissociation Energies of Sodium Cation Complexes Determined Using Competitive Collision-Induced Dissociation Experiments, Int. J. Mass Spectrom., 2001, 212, 1-3, 301, https://doi.org/10.1016/S1387-3806(01)00494-8 . [all data]

Armentrout and Rodgers, 2000
Armentrout, P.B.; Rodgers, M.T., An Absolute Sodium Cation Affinity Scale: Threshold Collision-Induced Dissociation Experiments and ab Initio Theory, J. Phys. Chem A, 2000, 104, 11, 2238, https://doi.org/10.1021/jp991716n . [all data]

More, Ray, et al., 1997
More, M.B.; Ray, D.; Armentrout, P.B., Cation-ether complexes in the gas phase: Bond dissociation energies of Na+(dimethyl ether)(x), x=1-4; Na+(1,2-dimethoxyethane)(x), x=1 and 2; and Na+(12-crown-4), J. Phys. Chem. AJOURNAL OF PHYSICAL CHEMISTRY A 101 (5): 831-839 JAN 30 1997, 1997, 101, 831. [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]

Meot-Ner (Mautner), 1989
Meot-Ner (Mautner), M., Ion DChemistry of Ferrocene. Thermochemistry of Ionization and Protonation and Solvent Clustering. Slow and Entropy - Driven Proton - Transfer Kinetics, J. Am. Chem. Soc., 1989, 111, 8, 2830, https://doi.org/10.1021/ja00190a014 . [all data]

Hiraoka, Grimsrud, et al., 1974
Hiraoka, K.; Grimsrud, E.P.; Kebarle, P., Gas Phase Ion Equilibria Studies of the Hydrogen Ion in Water - Dimethyl Ether and Methanol - Dimethyl Ether Mixtures, J. Am. Chem. Soc., 1974, 96, 11, 3359, https://doi.org/10.1021/ja00818a004 . [all data]

Meot-Ner (Mautner) and Sieck, 1991
Meot-Ner (Mautner), M.; Sieck, L.W., Proton affinity ladders from variable-temperature equilibrium measurements. 1. A reevaluation of the upper proton affinity range, J. Am. Chem. Soc., 1991, 113, 12, 4448, https://doi.org/10.1021/ja00012a012 . [all data]

Davidson and Kebarle, 1976
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]

Tholman, Tonner, et al., 1994
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]

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]

Bogdanov, Lee, et al., 2001
Bogdanov, B.; Lee, H.J.S.; McMahon, T.B., Influence of fluorine substitution on the structures and thermochemistry of chloride ion-ether complexes in the gas phase, Int. J. Mass Spectrom., 2001, 210, 387-402, https://doi.org/10.1016/S1387-3806(01)00404-3 . [all data]

DePuy, Bierbaum, et al., 1984
DePuy, C.H.; Bierbaum, V.M.; Damrauer, R., Relative Gas-Phase Acidities of the Alkanes, J. Am. Chem. Soc., 1984, 106, 4051. [all data]

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, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References