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tBuO anion


Reaction thermochemistry data

Go To: Top, 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 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

C4H9O- + Methyl Alcohol = (C4H9O- bullet Methyl Alcohol)

By formula: C4H9O- + CH4O = (C4H9O- bullet CH4O)

Quantity Value Units Method Reference Comment
Deltar25.5 ± 1.0kcal/molTDEqMeot-Ner and Sieck, 1986gas phase; B,M
Deltar23.4 ± 2.2kcal/molCIDTDeTuri and Ervin, 1999gas phase; B
Deltar26.0 ± 2.5kcal/molN/ACaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M
Quantity Value Units Method Reference Comment
Deltar27.9cal/mol*KN/AMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar10.20kcal/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Deltar17.1 ± 1.6kcal/molTDEqMeot-Ner and Sieck, 1986gas phase; B
Deltar17.3 ± 1.6kcal/molIMRECaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M

C4H9O- + Hydrogen cation = 2-Propanol, 2-methyl-

By formula: C4H9O- + H+ = C4H10O

Quantity Value Units Method Reference Comment
Deltar374.7 ± 1.0kcal/molD-EARamond, Davico, et al., 2000gas phase; B
Deltar374.6 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Deltar376.00 ± 0.70kcal/molCIDTDeTuri and Ervin, 1999gas phase; B
Deltar374.3 ± 2.0kcal/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; B
Quantity Value Units Method Reference Comment
Deltar368.1 ± 1.1kcal/molH-TSRamond, Davico, et al., 2000gas phase; B
Deltar368.0 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Deltar367.7 ± 2.1kcal/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.; B

C4H9O- + Ethanol = (C4H9O- bullet Ethanol)

By formula: C4H9O- + C2H6O = (C4H9O- bullet C2H6O)

Quantity Value Units Method Reference Comment
Deltar26.6 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar17.9 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + 1-Propanol = (C4H9O- bullet 1-Propanol)

By formula: C4H9O- + C3H8O = (C4H9O- bullet C3H8O)

Quantity Value Units Method Reference Comment
Deltar27.3 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar18.6 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + 2-Propanol, 2-methyl- = (C4H9O- bullet 2-Propanol, 2-methyl-)

By formula: C4H9O- + C4H10O = (C4H9O- bullet C4H10O)

Quantity Value Units Method Reference Comment
Deltar27.9 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar18.8 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + Water = (C4H9O- bullet Water)

By formula: C4H9O- + H2O = (C4H9O- bullet H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar23.4 ± 1.0kcal/molIMREMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar28.cal/mol*KN/AMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar15.0 ± 1.9kcal/molIMREMeot-Ner and Sieck, 1986gas phase; B

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
9.3505.PHPMSMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry 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: John E. Bartmess

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
1.9090 ± 0.0040LPESRamond, Davico, et al., 2000 
1.912 ± 0.054LPESEllison, Engleking, et al., 1982 
1.91 ± 0.10D-EABartmess, Scott, et al., 1979value altered from reference due to change in acidity scale
1.870 ± 0.010PDJanousek, Zimmerman, et al., 1978 
<1.869 ± 0.039PDReed and Brauman, 1975 

Protonation reactions

C4H9O- + Hydrogen cation = 2-Propanol, 2-methyl-

By formula: C4H9O- + H+ = C4H10O

Quantity Value Units Method Reference Comment
Deltar374.7 ± 1.0kcal/molD-EARamond, Davico, et al., 2000gas phase
Deltar374.6 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar376.00 ± 0.70kcal/molCIDTDeTuri and Ervin, 1999gas phase
Deltar374.3 ± 2.0kcal/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Quantity Value Units Method Reference Comment
Deltar368.1 ± 1.1kcal/molH-TSRamond, Davico, et al., 2000gas phase
Deltar368.0 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar367.7 ± 2.1kcal/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.

Ion clustering data

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

C4H9O- + Methyl Alcohol = (C4H9O- bullet Methyl Alcohol)

By formula: C4H9O- + CH4O = (C4H9O- bullet CH4O)

Quantity Value Units Method Reference Comment
Deltar25.5 ± 1.0kcal/molTDEqMeot-Ner and Sieck, 1986gas phase; B,M
Deltar23.4 ± 2.2kcal/molCIDTDeTuri and Ervin, 1999gas phase; B
Deltar26.0 ± 2.5kcal/molN/ACaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M
Quantity Value Units Method Reference Comment
Deltar27.9cal/mol*KN/AMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar10.20kcal/molIMREMustanir, Matsuoka, et al., 2006gas phase; B
Deltar17.1 ± 1.6kcal/molTDEqMeot-Ner and Sieck, 1986gas phase; B
Deltar17.3 ± 1.6kcal/molIMRECaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M

C4H9O- + Ethanol = (C4H9O- bullet Ethanol)

By formula: C4H9O- + C2H6O = (C4H9O- bullet C2H6O)

Quantity Value Units Method Reference Comment
Deltar26.6 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar17.9 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + 1-Propanol = (C4H9O- bullet 1-Propanol)

By formula: C4H9O- + C3H8O = (C4H9O- bullet C3H8O)

Quantity Value Units Method Reference Comment
Deltar27.3 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar18.6 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + 2-Propanol, 2-methyl- = (C4H9O- bullet 2-Propanol, 2-methyl-)

By formula: C4H9O- + C4H10O = (C4H9O- bullet C4H10O)

Quantity Value Units Method Reference Comment
Deltar27.9 ± 2.9kcal/molN/ACaldwell, 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,M
Quantity Value Units Method Reference Comment
Deltar29.3cal/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Deltar18.8 ± 2.0kcal/molIMRECaldwell, 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,M

C4H9O- + Water = (C4H9O- bullet Water)

By formula: C4H9O- + H2O = (C4H9O- bullet H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar23.4 ± 1.0kcal/molIMREMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar28.cal/mol*KN/AMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar15.0 ± 1.9kcal/molIMREMeot-Ner and Sieck, 1986gas phase; B

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
9.3505.PHPMSMeot-Ner and Sieck, 1986gas phase; Entropy change calculated or estimated; M

References

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

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

Meot-Ner and Sieck, 1986
Meot-Ner, M.; Sieck, L.W., The ionic hydrogen bond and ion solvation. 5. OH...O- bonds. Gas phase solvation and clustering of alkoxide and carboxylate anions, J. Am. Chem. Soc., 1986, 108, 7525. [all data]

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

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

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

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

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

Mustanir, Matsuoka, et al., 2006
Mustanir; Matsuoka, M.; Mishima, M.; Koch, H., Stability of complexes of phenylacetylides and benzyl alkoxides with methanol in the gas phase. Acid-base correlation in the ionic hydrogen-bond strength, Bull. Chem. Soc. Japan, 2006, 79, 7, 1118-1125, https://doi.org/10.1246/bcsj.79.1118 . [all data]

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

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Haas and Harrison, 1993
Haas, M.J.; Harrison, A.G., The Fragmentation of Proton-Bound Cluster Ions and the Gas-Phase Acidities of Alcohols, Int. J. Mass Spectrom. Ion Proc., 1993, 124, 2, 115, https://doi.org/10.1016/0168-1176(93)80003-W . [all data]

Ellison, Engleking, et al., 1982
Ellison, G.B.; Engleking, P.C.; Lineberger, W.C., Photoelectron spectroscopy of alkoxide and enolate negative ions, J. Phys. Chem., 1982, 86, 4873. [all data]

Janousek, Zimmerman, et al., 1978
Janousek, B.K.; Zimmerman, A.H.; Reed, K.J.; Brauman, J.I., Electron detachment from aliphatic molecular anions. Gas phase electron affinites of methoxyl, tert-butoxyl, and neopentoxyl radicals, J. Am. Chem. Soc., 1978, 100, 6142. [all data]

Reed and Brauman, 1975
Reed, K.J.; Brauman, J.I., Electron affinities of alkoxy radicals and the bond dissociation energies in aliphatic alcohols, J. Am. Chem. Soc., 1975, 97, 1625. [all data]


Notes

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