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Hydrogen cation


Reaction thermochemistry data

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

Data compiled by: 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 101 to 150

C4H9O- + Hydrogen cation = 1-Propanol, 2-methyl-

By formula: C4H9O- + H+ = C4H10O

Quantity Value Units Method Reference Comment
Deltar1567. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1568. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1539. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1540. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

C5H11O- + Hydrogen cation = Amylene hydrate

By formula: C5H11O- + H+ = C5H12O

Quantity Value Units Method Reference Comment
Deltar1561. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1561. ± 12.kJ/molG+TSBoand, Houriet, et al., 1983gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1533. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1533. ± 11.kJ/molCIDCBoand, Houriet, et al., 1983gas phase; value altered from reference due to change in acidity scale

C6H13O- + Hydrogen cation = 3-Pentanol, 3-methyl-

By formula: C6H13O- + H+ = C6H14O

Quantity Value Units Method Reference Comment
Deltar1556. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1556. ± 12.kJ/molG+TSBoand, Houriet, et al., 1983gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1528. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1528. ± 11.kJ/molCIDCBoand, Houriet, et al., 1983gas phase; value altered from reference due to change in acidity scale

C3HN2- + Hydrogen cation = Propanedinitrile

By formula: C3HN2- + H+ = C3H2N2

Quantity Value Units Method Reference Comment
Deltar1405. ± 8.8kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale
Deltar1406. ± 11.kJ/molG+TSCumming and Kebarle, 1978gas phase
Quantity Value Units Method Reference Comment
Deltar1373. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale
Deltar1373. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase
Deltar1376. ± 8.4kJ/molIMRETaft, Abboud, et al., 1988gas phase; Revised: 91TAF

C6H9O- + Hydrogen cation = Cyclohexanone

By formula: C6H9O- + H+ = C6H10O

Quantity Value Units Method Reference Comment
Deltar1533. ± 8.4kJ/molD-EABrinkman, Berger, et al., 1993gas phase
Deltar1531. ± 9.6kJ/molD-EAZimmerman, Jackson, et al., 1978gas phase
Deltar1544. ± 18.kJ/molG+TSBrickhouse and Squires, 1988gas phase; Between acetone, Me2C=NOH
Quantity Value Units Method Reference Comment
Deltar1501. ± 9.6kJ/molH-TSBrinkman, Berger, et al., 1993gas phase
Deltar1498. ± 11.kJ/molH-TSZimmerman, Jackson, et al., 1978gas phase
Deltar1511. ± 17.kJ/molIMRBBrickhouse and Squires, 1988gas phase; Between acetone, Me2C=NOH

H2N- + Hydrogen cation = Ammonia

By formula: H2N- + H+ = H3N

Quantity Value Units Method Reference Comment
Deltar1688.0 ± 1.2kJ/molD-EAWickham-Jones, Ervin, et al., 1989gas phase
Deltar1688.5 ± 3.3kJ/molG+TSMacKay, Hemsworth, et al., 1976gas phase
Deltar1683.2kJ/molN/ACheck, Faust, et al., 2001gas phase; HCrO3(t); ; «DELTA»S(EA)=6.6
Quantity Value Units Method Reference Comment
Deltar1656.8 ± 1.6kJ/molH-TSWickham-Jones, Ervin, et al., 1989gas phase
Deltar1657.3 ± 2.9kJ/molIMREMacKay, Hemsworth, et al., 1976gas phase
Deltar1654.4kJ/molN/ACheck, Faust, et al., 2001gas phase; HCrO3(t); ; «DELTA»S(EA)=6.6

ClO4- + Hydrogen cation = HClO4

By formula: ClO4- + H+ = HClO4

Quantity Value Units Method Reference Comment
Deltar1255. ± 24.kJ/molIMRBMeyer and Kass, 2010gas phase
Deltar1220. ± 50.kJ/molAcidMarcus, 1987gas phase; Acidity seems too strong by ca. 10 kcal/mol. Other lattice energetics ( Mallouk, Rosenthal, et al., 1984, Finch, Gates, et al., 1977) are also too stable for anions.
Quantity Value Units Method Reference Comment
Deltar1200. ± 50.kJ/molH-TSMarcus, 1987gas phase; Acidity seems too strong by ca. 10 kcal/mol. Other lattice energetics ( Mallouk, Rosenthal, et al., 1984, Finch, Gates, et al., 1977) are also too stable for anions.

C7H7O- + Hydrogen cation = Phenol, 3-methyl-

By formula: C7H7O- + H+ = C7H8O

Quantity Value Units Method Reference Comment
Deltar1457. ± 5.0kJ/molCIDCAngel and Ervin, 2006gas phase
Deltar1462. ± 8.8kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale
Deltar1467. ± 9.6kJ/molG+TSKebarle and McMahon, 1977gas phase
Quantity Value Units Method Reference Comment
Deltar1434. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale
Deltar1438. ± 8.4kJ/molIMREKebarle and McMahon, 1977gas phase

C6H- + Hydrogen cation = 1,3,5-Hexatriyne

By formula: C6H- + H+ = C6H2

Quantity Value Units Method Reference Comment
Deltar1501. ± 21.kJ/molD-EAGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1486. ± 13.kJ/molG+TSNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole
Quantity Value Units Method Reference Comment
Deltar1467. ± 21.kJ/molH-TSGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1452. ± 13.kJ/molIMRBNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole

C4H7O- + Hydrogen cation = 2-Butanone

By formula: C4H7O- + H+ = C4H8O

Quantity Value Units Method Reference Comment
Deltar1536. ± 12.kJ/molG+TSChyall, Brickhouse, et al., 1994gas phase; Primary and secondary sites are of equal acidity by equilibration. Acidity from Zimmerman, Reed, et al., 1977
Deltar1545. ± 10.kJ/molD-EAZimmerman, Reed, et al., 1977gas phase
Quantity Value Units Method Reference Comment
Deltar1508. ± 11.kJ/molIMREChyall, Brickhouse, et al., 1994gas phase; Primary and secondary sites are of equal acidity by equilibration. Acidity from Zimmerman, Reed, et al., 1977
Deltar1516. ± 11.kJ/molH-TSZimmerman, Reed, et al., 1977gas phase

cyclopentadienide anion + Hydrogen cation = 1,3-Cyclopentadiene

By formula: C5H5- + H+ = C5H6

Quantity Value Units Method Reference Comment
Deltar1481. ± 9.2kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1485. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase
Deltar1495. ± 8.4kJ/molD-EAEngelking and Lineberger, 1977gas phase
Quantity Value Units Method Reference Comment
Deltar1455. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1459. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase

C4H9- + Hydrogen cation = Butane

By formula: C4H9- + H+ = C4H10

Quantity Value Units Method Reference Comment
Deltar1739. ± 8.4kJ/molBranDePuy, Gronert, et al., 1989gas phase; The HOF(Et(Me)N.) in Seetula, Russell, et al., 1990 gives BDE(N-H) = 99 kcal/mol, ca. 5 kcal/mol too strong
Deltar1745. ± 20.kJ/molBranPeerboom, Rademaker, et al., 1992gas phase
Quantity Value Units Method Reference Comment
Deltar1703. ± 8.8kJ/molH-TSDePuy, Gronert, et al., 1989gas phase; The HOF(Et(Me)N.) in Seetula, Russell, et al., 1990 gives BDE(N-H) = 99 kcal/mol, ca. 5 kcal/mol too strong
Deltar1709. ± 21.kJ/molH-TSPeerboom, Rademaker, et al., 1992gas phase

C7H15O- + Hydrogen cation = 3-Pentanol, 2,2-dimethyl-

By formula: C7H15O- + H+ = C7H16O

Quantity Value Units Method Reference Comment
Deltar1547. ± 8.4kJ/molD-EAMihalick, Gatev, et al., 1996gas phase; Derived BDE: 104.2±2.8 kcal/mol
Deltar1548. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1520. ± 9.2kJ/molH-TSMihalick, Gatev, et al., 1996gas phase; Derived BDE: 104.2±2.8 kcal/mol
Deltar1520. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

HTe- + Hydrogen cation = dihydrogen telluride

By formula: HTe- + H+ = H2Te

Quantity Value Units Method Reference Comment
Deltar1385. ± 8.8kJ/molG+TSGal, Maria, et al., 1989gas phase
Deltar1386.3 ± 1.7kJ/molD-EAFreidhoff, Snodgrass, et al., 1986gas phase
Deltar1393.3kJ/molN/ACheck, Faust, et al., 2001gas phase; ScBr4-.; ; «DELTA»S(EA)=8.4
Quantity Value Units Method Reference Comment
Deltar1360. ± 8.4kJ/molIMREGal, Maria, et al., 1989gas phase
Deltar1361.2 ± 3.0kJ/molH-TSFreidhoff, Snodgrass, et al., 1986gas phase
Deltar1366.9kJ/molN/ACheck, Faust, et al., 2001gas phase; ScBr4-.; ; «DELTA»S(EA)=8.4

C8H7O- + Hydrogen cation = Acetophenone

By formula: C8H7O- + H+ = C8H8O

Quantity Value Units Method Reference Comment
Deltar1512. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1515. ± 11.kJ/molD-EAZimmerman, Reed, et al., 1977gas phase
Deltar1516. ± 11.kJ/molG+TSCumming and Kebarle, 1978gas phase
Quantity Value Units Method Reference Comment
Deltar1483. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Deltar1487. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase

C8H6N- + Hydrogen cation = Indole

By formula: C8H6N- + H+ = C8H7N

Quantity Value Units Method Reference Comment
Deltar1472. ± 10.kJ/molTDEqMeot-ner, Liebman, et al., 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1461. ± 8.8kJ/molG+TSTaft and Bordwell, 1988gas phase
Quantity Value Units Method Reference Comment
Deltar1440. ± 8.4kJ/molTDEqMeot-ner, Liebman, et al., 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1431. ± 8.4kJ/molIMRETaft and Bordwell, 1988gas phase

C5H5N2- + Hydrogen cation = 2-Aminopyridine

By formula: C5H5N2- + H+ = C5H6N2

Quantity Value Units Method Reference Comment
Deltar1519. ± 10.kJ/molTDEqMeot-ner and Kafafi, 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1518. ± 8.8kJ/molG+TSTaft and Bordwell, 1988gas phase
Quantity Value Units Method Reference Comment
Deltar1489. ± 8.4kJ/molTDEqMeot-ner and Kafafi, 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1488. ± 8.4kJ/molIMRETaft and Bordwell, 1988gas phase

CH2F3Si- + Hydrogen cation = Silane, trifluoromethyl-

By formula: CH2F3Si- + H+ = CH3F3Si

Quantity Value Units Method Reference Comment
Deltar1542. ± 16.kJ/molG+TSAllison and McMahon, 1990gas phase; Between acetone and acetaldehyde. In conflict with Campanaro, Marvin, et al., 1988
Deltar1555. ± 19.kJ/molG+TSCampanaro, Marvin, et al., 1988gas phase; Between HF and acetone
Quantity Value Units Method Reference Comment
Deltar1508. ± 16.kJ/molIMRBAllison and McMahon, 1990gas phase; Between acetone and acetaldehyde. In conflict with Campanaro, Marvin, et al., 1988
Deltar1522. ± 19.kJ/molIMRBCampanaro, Marvin, et al., 1988gas phase; Between HF and acetone

CHF- + Hydrogen cation = CH2F

By formula: CHF- + H+ = CH2F

Quantity Value Units Method Reference Comment
Deltar1668. ± 6.3kJ/molG+TSBorn, Ingemann, et al., 1994gas phase; Between EtNH2 and Me2NH
Deltar1650. ± 22.kJ/molD-EAGilles, Ervin, et al., 1992gas phase; Triplet state of neutral: 14.9±0.4 kcal/mol higher than singlet
Quantity Value Units Method Reference Comment
Deltar1634. ± 5.9kJ/molIMRBBorn, Ingemann, et al., 1994gas phase; Between EtNH2 and Me2NH
Deltar1616. ± 22.kJ/molH-TSGilles, Ervin, et al., 1992gas phase; Triplet state of neutral: 14.9±0.4 kcal/mol higher than singlet

indenide anion + Hydrogen cation = Indene

By formula: C9H7- + H+ = C9H8

Quantity Value Units Method Reference Comment
Deltar1482. ± 10.kJ/molTDEqMeot-ner, Liebman, et al., 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1472. ± 8.8kJ/molG+TSTaft and Bordwell, 1988gas phase
Quantity Value Units Method Reference Comment
Deltar1451. ± 8.4kJ/molTDEqMeot-ner, Liebman, et al., 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.
Deltar1442. ± 8.4kJ/molIMRETaft and Bordwell, 1988gas phase

C6H3F2- + Hydrogen cation = Benzene, 1,2-difluoro-

By formula: C6H3F2- + H+ = C6H4F2

Quantity Value Units Method Reference Comment
Deltar1580. ± 9.2kJ/molG+TSBuker, Nibbering, et al., 1997gas phase
Deltar1582. ± 13.kJ/molG+TSBriscese and Riveros, 1975gas phase; Between EtO-, iPrO-; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1546. ± 8.4kJ/molIMREBuker, Nibbering, et al., 1997gas phase
Deltar1547. ± 13.kJ/molIMRBBriscese and Riveros, 1975gas phase; Between EtO-, iPrO-; value altered from reference due to change in acidity scale

C6H4NO2- + Hydrogen cation = Benzene, nitro-

By formula: C6H4NO2- + H+ = C6H5NO2

Quantity Value Units Method Reference Comment
Deltar1577. ± 13.kJ/molG+TSCheng and Grabowski, 1989gas phase; between EtOH, iPrOH
Deltar1482. ± 13.kJ/molG+TSMeot-ner and Kafafi, 1988gas phase; acidity stronger than all levels of computation by 25 kcal/mol
Quantity Value Units Method Reference Comment
Deltar1545. ± 13.kJ/molIMRBCheng and Grabowski, 1989gas phase; between EtOH, iPrOH
Deltar1450. ± 13.kJ/molIMRBMeot-ner and Kafafi, 1988gas phase; acidity stronger than all levels of computation by 25 kcal/mol

N3O4- + Hydrogen cation = HN3O4

By formula: N3O4- + H+ = HN3O4

Quantity Value Units Method Reference Comment
Deltar1286. ± 30.kJ/molG+TSSchmitt, Krempp, et al., 1992gas phase; Acidity between H2SO4, HNO3..NO3-. Reported: G: 297±7 kcal/mol. Readjusted to newer acidities - JEB; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1257. ± 29.kJ/molIMRBSchmitt, Krempp, et al., 1992gas phase; Acidity between H2SO4, HNO3..NO3-. Reported: G: 297±7 kcal/mol. Readjusted to newer acidities - JEB; value altered from reference due to change in acidity scale

C3H5O- + Hydrogen cation = 2-Propen-1-ol

By formula: C3H5O- + H+ = C3H6O

Quantity Value Units Method Reference Comment
Deltar1563. ± 12.kJ/molG+TSGraul, Schnute, et al., 1990gas phase
Deltar1400. ± 50.kJ/molAcidKuhn, Fenzlaff, et al., 1988gas phase; From CH2=CHCH2OH, AP 0.9 eV; est. thermo = 2.5 eV
Deltar1409. ± 8.4kJ/molD-EABouby, Compton, et al., 1968gas phase; EA probably 2 eV less
Quantity Value Units Method Reference Comment
Deltar1534. ± 12.kJ/molCIDCGraul, Schnute, et al., 1990gas phase
Deltar1380. ± 8.8kJ/molH-TSBouby, Compton, et al., 1968gas phase; EA probably 2 eV less

C7H13O- + Hydrogen cation = Cyclohexanol, 2-methyl-, cis-

By formula: C7H13O- + H+ = C7H14O

Quantity Value Units Method Reference Comment
Deltar1554. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1551. ± 9.2kJ/molG+TSMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale
Quantity Value Units Method Reference Comment
Deltar1527. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1523. ± 8.8kJ/molCIDCMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale

C7H13O- + Hydrogen cation = Cyclohexanol, 2-methyl-, trans-

By formula: C7H13O- + H+ = C7H14O

Quantity Value Units Method Reference Comment
Deltar1559. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1555. ± 9.2kJ/molG+TSMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale
Quantity Value Units Method Reference Comment
Deltar1531. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1528. ± 8.8kJ/molCIDCMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale

C7H13O- + Hydrogen cation = Cyclohexanol, 4-methyl-, trans-

By formula: C7H13O- + H+ = C7H14O

Quantity Value Units Method Reference Comment
Deltar1563. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1560. ± 9.2kJ/molG+TSMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale
Quantity Value Units Method Reference Comment
Deltar1536. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1532. ± 8.8kJ/molCIDCMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale

C7H13O- + Hydrogen cation = Cyclohexanol, 4-methyl-, cis-

By formula: C7H13O- + H+ = C7H14O

Quantity Value Units Method Reference Comment
Deltar1559. ± 8.4kJ/molCIDCHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1555. ± 9.2kJ/molG+TSMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale
Quantity Value Units Method Reference Comment
Deltar1531. ± 8.8kJ/molH-TSHaas and Harrison, 1993gas phase; Both metastable and 50 eV collision energy.
Deltar1528. ± 8.8kJ/molCIDCMajumdar, Clairet, et al., 1992gas phase; Acidity adjusted to 1987 acidity scale

HO2- + Hydrogen cation = Hydrogen peroxide

By formula: HO2- + H+ = H2O2

Quantity Value Units Method Reference Comment
Deltar1575.3 ± 2.1kJ/molG+TSRamond, Blanksby, et al., 2002gas phase; versus HCCH
Deltar1572. ± 8.8kJ/molG+TSBierbaum, Schmidt, et al., 1981gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1546.0 ± 1.7kJ/molIMRERamond, Blanksby, et al., 2002gas phase; versus HCCH
Deltar1542. ± 8.4kJ/molIMREBierbaum, Schmidt, et al., 1981gas phase; value altered from reference due to change in acidity scale

C2F6NO4S2- + Hydrogen cation = C2HF6NO4S2

By formula: C2F6NO4S2- + H+ = C2HF6NO4S2

Quantity Value Units Method Reference Comment
Deltar1227. ± 9.6kJ/molG+TSLeito, Raamat, et al., 2009gas phase
Deltar1249. ± 9.6kJ/molG+TSKoppel, Koppel, et al., 1998gas phase; corrected from typo in literature: I. Koppel, private Communication, 1998
Quantity Value Units Method Reference Comment
Deltar1199. ± 8.4kJ/molIMRELeito, Raamat, et al., 2009gas phase
Deltar1221. ± 8.4kJ/molIMREKoppel, Koppel, et al., 1998gas phase; corrected from typo in literature: I. Koppel, private Communication, 1998

C3H4Cl- + Hydrogen cation = Allyl chloride

By formula: C3H4Cl- + H+ = C3H5Cl

Quantity Value Units Method Reference Comment
Deltar1590. ± 17.kJ/molG+TSDahlke and Kass, 1991gas phase; Between MeOH, EtOH. Reprotonation site uncertain
Deltar1571. ± 8.8kJ/molG+TSPoutsma, Nash, et al., 1997gas phase; Between iPrOH, HF, near tBuOH
Quantity Value Units Method Reference Comment
Deltar1559. ± 17.kJ/molIMRBDahlke and Kass, 1991gas phase; Between MeOH, EtOH. Reprotonation site uncertain
Deltar1540. ± 8.4kJ/molIMRBPoutsma, Nash, et al., 1997gas phase; Between iPrOH, HF, near tBuOH

C6H4Br- + Hydrogen cation = Benzene, bromo-

By formula: C6H4Br- + H+ = C6H5Br

Quantity Value Units Method Reference Comment
Deltar1620. ± 10.kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes
Deltar1607. ± 8.8kJ/molG+TSLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile
Quantity Value Units Method Reference Comment
Deltar1586. ± 11.kJ/molH-TSWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes
Deltar1572. ± 8.4kJ/molIMRBLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile

H2NS- + Hydrogen cation = H3NS

By formula: H2NS- + H+ = H3NS

Quantity Value Units Method Reference Comment
Deltar1493. ± 13.kJ/molG+TSDePuy and Bierbaum, 1981gas phase; Between CF3CH2OH and H2S, comparable to MeSH; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1467. ± 13.kJ/molIMRBDePuy and Bierbaum, 1981gas phase; Between CF3CH2OH and H2S, comparable to MeSH; value altered from reference due to change in acidity scale
Deltar1480. ± 13.kJ/molIMRBBierbaum, Grabowski, et al., 1984gas phase; NH2- + COS ->.

C2H4FO- + Hydrogen cation = Ethanol, 2-fluoro-

By formula: C2H4FO- + H+ = C2H5FO

Quantity Value Units Method Reference Comment
Deltar1553. ± 12.kJ/molG+TSGraul, Schnute, et al., 1990gas phase
Quantity Value Units Method Reference Comment
Deltar1525. ± 12.kJ/molCIDCGraul, Schnute, et al., 1990gas phase
Deltar1521. ± 15.kJ/molIMRBClair and McMahon, 1980gas phase; Between HF and acetone; value altered from reference due to change in acidity scale
Deltar1527. ± 14.kJ/molIMRBDawson and Jennings, 1977gas phase; Between HF and acetone; value altered from reference due to change in acidity scale

C6H3F2- + Hydrogen cation = Benzene, 1,4-difluoro-

By formula: C6H3F2- + H+ = C6H4F2

Quantity Value Units Method Reference Comment
Deltar1591. ± 8.8kJ/molG+TSBuker, Nibbering, et al., 1997gas phase
Deltar1589. ± 13.kJ/molG+TSBriscese and Riveros, 1975gas phase; < MeOH, <= EtOH; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1557. ± 8.4kJ/molIMREBuker, Nibbering, et al., 1997gas phase
Deltar1555. ± 13.kJ/molIMRBBriscese and Riveros, 1975gas phase; < MeOH, <= EtOH; value altered from reference due to change in acidity scale

C2H5OSi- + Hydrogen cation = dimethyloxosilane

By formula: C2H5OSi- + H+ = C2H6OSi

Quantity Value Units Method Reference Comment
Deltar1521. ± 17.kJ/molG+TSDamrauer and Krempp, 1990gas phase; between CF3CH2OH and CH3CHO in acidity
Deltar1522. ± 17.kJ/molG+TSFroelicher, Freiser, et al., 1984gas phase; Between aniline, CF3CH2OH in acidity
Quantity Value Units Method Reference Comment
Deltar1492. ± 17.kJ/molIMRBDamrauer and Krempp, 1990gas phase; between CF3CH2OH and CH3CHO in acidity
Deltar1492. ± 17.kJ/molIMRBFroelicher, Freiser, et al., 1984gas phase; Between aniline, CF3CH2OH in acidity

AlO- + Hydrogen cation = HAlO

By formula: AlO- + H+ = HAlO

Quantity Value Units Method Reference Comment
Deltar1539. ± 40.kJ/molD-EADesai, Wu, et al., 1996gas phase
Deltar1505. ± 17.kJ/molG+TSDamrauer, Krempp, et al., 1991gas phase; Between CF3CH2OH, pyrrole. Calculations imply that the acid is AlOH, not HAlO
Quantity Value Units Method Reference Comment
Deltar1509. ± 41.kJ/molH-TSDesai, Wu, et al., 1996gas phase
Deltar1475. ± 17.kJ/molIMRBDamrauer, Krempp, et al., 1991gas phase; Between CF3CH2OH, pyrrole. Calculations imply that the acid is AlOH, not HAlO

Azide anion + Hydrogen cation = Hydrogen azide

By formula: N3- + H+ = HN3

Quantity Value Units Method Reference Comment
Deltar1428.8 ± 3.0kJ/molD-EAYang, Kiran, et al., 2004gas phase
Deltar1439. ± 13.kJ/molG+TSPellerite, Jackson, et al., 1981gas phase; Acidity near HCO2H
Deltar1418. ± 21.kJ/molAcidFranklin, Dibeler, et al., 1958gas phase; From MeN3 and HN3
Quantity Value Units Method Reference Comment
Deltar1403.9 ± 3.4kJ/molH-TSYang, Kiran, et al., 2004gas phase
Deltar1414. ± 12.kJ/molIMRBPellerite, Jackson, et al., 1981gas phase; Acidity near HCO2H

C2H5N2O- + Hydrogen cation = N-Nitrosodimethylamine

By formula: C2H5N2O- + H+ = C2H6N2O

Quantity Value Units Method Reference Comment
Deltar1594. ± 8.8kJ/molG+TSIngemann and Nibbering, 1985gas phase; The experimental dHf(Me2NNO) { Korsunskii, Pepekin, et al., 1967} is incorrect: JEB, manuscript in preparation; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1564. ± 8.4kJ/molIMREIngemann and Nibbering, 1985gas phase; The experimental dHf(Me2NNO) { Korsunskii, Pepekin, et al., 1967} is incorrect: JEB, manuscript in preparation; value altered from reference due to change in acidity scale

C3H9Ge- + Hydrogen cation = C3H10Ge

By formula: C3H9Ge- + H+ = C3H10Ge

Quantity Value Units Method Reference Comment
Deltar1543. ± 8.8kJ/molD-EABrinkman, Salomon, et al., 1995gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2
Deltar1514. ± 13.kJ/molG+TSBrinkman, Salomon, et al., 1995gas phase; Acidity between mF- and oF-aniline.
Quantity Value Units Method Reference Comment
Deltar1512. ± 9.2kJ/molH-TSBrinkman, Salomon, et al., 1995gas phase; D-EA cycle implies BDE(Me3Ge-H) = 80.2
Deltar1484. ± 13.kJ/molIMRBBrinkman, Salomon, et al., 1995gas phase; Acidity between mF- and oF-aniline.

C4H7- + Hydrogen cation = 1-Propene, 2-methyl-

By formula: C4H7- + H+ = C4H8

Quantity Value Units Method Reference Comment
Deltar1644. ± 7.5kJ/molEndoWenthold, Hu, et al., 1999gas phase
Deltar1619. ± 8.4kJ/molD-EAWenthold, Polak, et al., 1996gas phase
Deltar1633. ± 9.6kJ/molG+TSBartmess and Burnham, 1984gas phase
Quantity Value Units Method Reference Comment
Deltar1613. ± 7.9kJ/molH-TSWenthold, Hu, et al., 1999gas phase
Deltar1588. ± 8.8kJ/molH-TSWenthold, Polak, et al., 1996gas phase
Deltar1602. ± 9.2kJ/molIMREBartmess and Burnham, 1984gas phase

CHOS- + Hydrogen cation = CH2OS

By formula: CHOS- + H+ = CH2OS

Quantity Value Units Method Reference Comment
Deltar1467. ± 13.kJ/molG+TSKass and DePuy, 1985gas phase; This acidity value, and the HOF(HCOSH), appear to have been estimates, and should not be taken as experimental ones - JEB, 2006,G3MP2B3: 334 kcal/mol
Quantity Value Units Method Reference Comment
Deltar1435. ± 13.kJ/molIMRBKass and DePuy, 1985gas phase; This acidity value, and the HOF(HCOSH), appear to have been estimates, and should not be taken as experimental ones - JEB, 2006,G3MP2B3: 334 kcal/mol

C2H4NO2- + Hydrogen cation = Glycine

By formula: C2H4NO2- + H+ = C2H5NO2

Quantity Value Units Method Reference Comment
Deltar1434. ± 9.2kJ/molCIDCJones, Bernier, et al., 2007gas phase
Deltar1429. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase
Deltar1433. ± 8.8kJ/molG+TSLocke and McIver, 1983gas phase
Deltar1410. ± 5.9kJ/molEIAEMuftakhov, Vasil'ev, et al., 1999gas phase
Quantity Value Units Method Reference Comment
Deltar1400. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase
Deltar1404. ± 8.4kJ/molIMRELocke and McIver, 1983gas phase

C6H3F2- + Hydrogen cation = Benzene, 1,3-difluoro-

By formula: C6H3F2- + H+ = C6H4F2

Quantity Value Units Method Reference Comment
Deltar1565. ± 8.8kJ/molG+TSBuker, Nibbering, et al., 1997gas phase
Deltar<1575.5 ± 1.3kJ/molG+TSBriscese and Riveros, 1975gas phase; < iPrOH; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1533. ± 8.4kJ/molIMREBuker, Nibbering, et al., 1997gas phase
Deltar<1543.1kJ/molIMRBBriscese and Riveros, 1975gas phase; < iPrOH; value altered from reference due to change in acidity scale

C4H3O- + Hydrogen cation = Furan

By formula: C4H3O- + H+ = C4H4O

Quantity Value Units Method Reference Comment
Deltar1636.2 ± 1.5kJ/molG+TSGrabowski and Owusugas phase
Deltar1624. ± 13.kJ/molG+TSDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.
Quantity Value Units Method Reference Comment
Deltar1602.1 ± 0.84kJ/molIMREGrabowski and Owusugas phase
Deltar1590. ± 13.kJ/molIMRBDePuy, Kass, et al., 1988gas phase; Order:H2O < furan < 2-Me-furan < MeOH. D exchange indicates anion at C-2.

HO- + Hydrogen cation = Water

By formula: HO- + H+ = H2O

Quantity Value Units Method Reference Comment
Deltar1633.141 ± 0.042kJ/molD-EASmith, Kim, et al., 1997gas phase; Given: 14741.02(3) cm-1. dHacid(0K) = 389.11±0.014
Deltar1622.1kJ/molN/ACheck, Faust, et al., 2001gas phase; MnBr3-; ; «DELTA»S(EA)=1.7
Quantity Value Units Method Reference Comment
Deltar1605.57 ± 0.25kJ/molH-TSSmith, Kim, et al., 1997gas phase; Given: 14741.02(3) cm-1. dHacid(0K) = 389.11±0.014
Deltar1594.5kJ/molN/ACheck, Faust, et al., 2001gas phase; MnBr3-; ; «DELTA»S(EA)=1.7

C2H2N- + Hydrogen cation = Methyl isocyanide

By formula: C2H2N- + H+ = C2H3N

Quantity Value Units Method Reference Comment
Deltar1592. ± 8.8kJ/molG+TSMatimba, Crabbendam, et al., 1992gas phase
Deltar1567. ± 8.8kJ/molG+TSFilley, DePuy, et al., 1987gas phase; Matimba, Crabbendam, et al., 1992 indicate that CN- loss interfered with equilibrium here.
Quantity Value Units Method Reference Comment
Deltar1561. ± 8.4kJ/molIMREMatimba, Crabbendam, et al., 1992gas phase
Deltar1536. ± 8.4kJ/molIMREFilley, DePuy, et al., 1987gas phase; Matimba, Crabbendam, et al., 1992 indicate that CN- loss interfered with equilibrium here.

S- + Hydrogen cation = Mercapto radical

By formula: S- + H+ = HS

Quantity Value Units Method Reference Comment
Deltar1465.03 ± 0.29kJ/molD-EABlondel, Chaibi, et al., 2005gas phase; (32)S: 2.0771040(9) eV: revised analysis of Blondel, Delsart, et al., 2001
Deltar1465. ± 12.kJ/molEndoRempala and Ervin, 2000gas phase
Quantity Value Units Method Reference Comment
Deltar1441.8 ± 0.79kJ/molH-TSBlondel, Chaibi, et al., 2005gas phase; (32)S: 2.0771040(9) eV: revised analysis of Blondel, Delsart, et al., 2001
Deltar1442. ± 13.kJ/molH-TSRempala and Ervin, 2000gas phase

imidazolide anion + Hydrogen cation = 1H-Imidazole

By formula: C3H3N2- + H+ = C3H4N2

Quantity Value Units Method Reference Comment
Deltar1464.1 ± 3.0kJ/molG+TSGianola, Ichino, et al., 2005gas phase
Deltar1465. ± 8.8kJ/molG+TSTaft, Anvia, et al., 1986gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Deltar1433.4 ± 1.7kJ/molIMREGianola, Ichino, et al., 2005gas phase
Deltar1434. ± 8.4kJ/molIMRETaft, Anvia, et al., 1986gas phase; value altered from reference due to change in acidity scale

C9H4N3O2- + Hydrogen cation = 4-(Dicyanomethyl)nitrobenzene

By formula: C9H4N3O2- + H+ = C9H5N3O2

Quantity Value Units Method Reference Comment
Deltar1277. ± 9.6kJ/molG+TSKoppel, Taft, et al., 1994gas phase; Per Leito, Raamat, et al., 2009, dGacid is likely too weak by at least 1.3 kcal/mol, and possibly 5.3, due to problems in the ladder at dGacid=299
Quantity Value Units Method Reference Comment
Deltar1253. ± 8.4kJ/molIMREKoppel, Taft, et al., 1994gas phase; Per Leito, Raamat, et al., 2009, dGacid is likely too weak by at least 1.3 kcal/mol, and possibly 5.3, due to problems in the ladder at dGacid=299

References

Go To: Top, Reaction thermochemistry data, 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

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