Hydrogen cation
- Formula: H+
- Molecular weight: 1.00739
- IUPAC Standard InChIKey: GPRLSGONYQIRFK-UHFFFAOYSA-N
- CAS Registry Number: 12408-02-5
- Chemical structure:
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- Gas phase thermochemistry data
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 250, reactions 301 to 350, reactions 351 to 400, reactions 401 to 450, reactions 451 to 500, reactions 501 to 550, reactions 551 to 600, reactions 601 to 650, reactions 651 to 700, reactions 701 to 750, reactions 751 to 800, reactions 801 to 850, reactions 851 to 900, reactions 901 to 950, reactions 951 to 1000, reactions 1001 to 1050, reactions 1051 to 1100, reactions 1101 to 1150, reactions 1151 to 1200, reactions 1201 to 1250, reactions 1251 to 1300, reactions 1301 to 1350, reactions 1351 to 1375
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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 251 to 300
By formula: C6H6BrO2- + H+ = C6H7BrO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1405. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1375. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
C2H5S- + =
By formula: C2H5S- + H+ = C2H6S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1488. ± 8.8 | kJ/mol | D-EA | Janousek, Reed, et al., 1980 | gas phase |
ΔrH° | 1486. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1460. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
By formula: C7H9O2- + H+ = C7H10O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1441. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1412. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
By formula: C12H11O2- + H+ = C12H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1431. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1401. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
By formula: C8H9O4- + H+ = C8H10O4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1421. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1391. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
By formula: C7H6NO2- + H+ = C7H7NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1394. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1364. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
By formula: C6H6NO4- + H+ = C6H7NO4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1389. ± 8.8 | kJ/mol | G+TS | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1359. ± 8.4 | kJ/mol | CIDC | Adcock, Baran, et al., 2005 | gas phase; Entropy of acidity reassigned at 24 eu; authors did not take symmetry changes into account |
C4H5O- + =
By formula: C4H5O- + H+ = C4H6O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1578. ± 13. | kJ/mol | G+TS | Bartmess and Burnham, 1984 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1549. ± 13. | kJ/mol | IMRB | Bartmess and Burnham, 1984 | gas phase; value altered from reference due to change in acidity scale |
ΔrG° | 1544. ± 13. | kJ/mol | IMRB | Kleingeld and Nibbering, 1984 | gas phase |
O- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1600.798 ± 0.042 | kJ/mol | D-EA | Neumark, Lykke, et al., 1985 | gas phase; Given: 1.461122(3) eV; revised to 1.4611107(17) eV, 95BLO, based on missing term+86CODATA |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1576.2 ± 0.63 | kJ/mol | H-TS | Neumark, Lykke, et al., 1985 | gas phase; Given: 1.461122(3) eV; revised to 1.4611107(17) eV, 95BLO, based on missing term+86CODATA |
C2H2FO- + =
By formula: C2H2FO- + H+ = C2H3FO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1489. ± 16. | kJ/mol | G+TS | Farid and McMahon, 1980 | gas phase; Between MeCOCH2F, cyclopentadiene; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1460. ± 15. | kJ/mol | IMRB | Farid and McMahon, 1980 | gas phase; Between MeCOCH2F, cyclopentadiene; value altered from reference due to change in acidity scale |
C7H4N- + =
By formula: C7H4N- + H+ = C7H5N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1603. ± 10. | kJ/mol | TDEq | Meot-ner and Kafafi, 1988 | gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1567. ± 8.4 | kJ/mol | TDEq | Meot-ner and Kafafi, 1988 | gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho. |
By formula: C9H6N- + H+ = C9H7N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1613. ± 8.4 | kJ/mol | TDEq | Meot-ner, Liebman, et al., 1988 | gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1577. ± 8.4 | kJ/mol | TDEq | Meot-ner, Liebman, et al., 1988 | gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho. |
HN2O2- + =
By formula: HN2O2- + H+ = H2N2O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1448. ± 9.2 | kJ/mol | G+TS | Attina, Cacace, et al., 1993 | gas phase; ΔfH(H2NNO2): estimated sublimation enthalpy in Gurvich, Veyts, et al. seems too small - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1415. ± 8.4 | kJ/mol | IMRE | Attina, Cacace, et al., 1993 | gas phase; ΔfH(H2NNO2): estimated sublimation enthalpy in Gurvich, Veyts, et al. seems too small - JEB |
C6H7- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1534. ± 13. | kJ/mol | G+TS | Hill and Squires, 1998 | gas phase; acidity between MeCHO, (FCH2)2CHOH. Reprotonate to conjugated form, ΔGacid=361.9, IMRB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1500. ± 13. | kJ/mol | IMRB | Hill and Squires, 1998 | gas phase; acidity between MeCHO, (FCH2)2CHOH. Reprotonate to conjugated form, ΔGacid=361.9, IMRB |
C3H11BN- + =
By formula: C3H11BN- + H+ = C3H12BN
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1645. ± 8.8 | kJ/mol | G+TS | Ren, Workman, et al., 1998 | gas phase; Acid heat est. from B-N bond strength of "35-40 kcal/mol" in Ren, Workman, et al., 1998 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1607. ± 8.4 | kJ/mol | IMRB | Ren, Workman, et al., 1998 | gas phase; Acid heat est. from B-N bond strength of "35-40 kcal/mol" in Ren, Workman, et al., 1998 |
C8H9- + =
By formula: C8H9- + H+ = C8H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1699. ± 19. | kJ/mol | CIDT | Graul and Squires, 1990 | gas phase; From decarboxylation threshold. Stable form probably the spiro[2.5]octadienide Maas and van Keelen, 1989 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1664. ± 20. | kJ/mol | H-TS | Graul and Squires, 1990 | gas phase; From decarboxylation threshold. Stable form probably the spiro[2.5]octadienide Maas and van Keelen, 1989 |
C13H12NO5- + = C13H13NO5
By formula: C13H12NO5- + H+ = C13H13NO5
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1367. ± 8.8 | kJ/mol | G+TS | Mishima, Matsuoka, et al., 2004 | gas phase; Meldrums acid is: 2,2-diMe-1,3-dioxan-4,6-dione. Calc: enol form of acid more stable. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1333. ± 8.4 | kJ/mol | IMRE | Mishima, Matsuoka, et al., 2004 | gas phase; Meldrums acid is: 2,2-diMe-1,3-dioxan-4,6-dione. Calc: enol form of acid more stable. |
C4H5O- + =
By formula: C4H5O- + H+ = C4H6O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1631. ± 21. | kJ/mol | G+TS | Baschky, Peterson, et al., 1994 | gas phase; Between D2O and PhF. Cis and Trans anions do not interconvert and have same expt. acidity. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1598. ± 21. | kJ/mol | IMRB | Baschky, Peterson, et al., 1994 | gas phase; Between D2O and PhF. Cis and Trans anions do not interconvert and have same expt. acidity. |
C3H2F5O- + =
By formula: C3H2F5O- + H+ = C3H3F5O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1487. ± 26. | kJ/mol | G+TS | Dawson and Jennings, 1977 | gas phase; Between (CF3)2CHOH, CF3CH2OH; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1459. ± 25. | kJ/mol | IMRB | Dawson and Jennings, 1977 | gas phase; Between (CF3)2CHOH, CF3CH2OH; value altered from reference due to change in acidity scale |
C4H2F7O- + =
By formula: C4H2F7O- + H+ = C4H3F7O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1465. ± 26. | kJ/mol | G+TS | Dawson and Jennings, 1977 | gas phase; Between (CF3)2CHOH, CF3CH2OH; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1437. ± 25. | kJ/mol | IMRB | Dawson and Jennings, 1977 | gas phase; Between (CF3)2CHOH, CF3CH2OH; value altered from reference due to change in acidity scale |
C2H2F- + =
By formula: C2H2F- + H+ = C2H3F
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1618. ± 17. | kJ/mol | G+TS | Rabasco and Kass, 1992 | gas phase; Comparable to PhF. Vinyl anion structure proved, rxn with D2O -> more stable HC≡CH..F- |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1586. ± 17. | kJ/mol | IMRB | Rabasco and Kass, 1992 | gas phase; Comparable to PhF. Vinyl anion structure proved, rxn with D2O -> more stable HC≡CH..F- |
C3H2NO- + =
By formula: C3H2NO- + H+ = C3H3NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1441. ± 8.8 | kJ/mol | G+TS | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1413. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
ΔrG° | 1432. ± 21. | kJ/mol | IMRB | Brauman and Blair, 1968 | gas phase |
C4H9O2- + =
By formula: C4H9O2- + H+ = C4H10O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1490. ± 10. | kJ/mol | G+TS | Crowder and Bartmess, 1993 | gas phase; ΔGacid at 80°C |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1484. ± 8.4 | kJ/mol | IMRE | Crowder and Bartmess, 1993 | gas phase; ΔGacid at 80°C |
ΔrG° | 1507.1 ± 1.3 | kJ/mol | CIDC | Houriet, Tabet, et al., 1984 | gas phase; value altered from reference due to change in acidity scale |
By formula: C5H4N5- + H+ = C5H5N5
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1402. ± 9.2 | kJ/mol | G+TS | Sharma and Lee, 2002 | gas phase; Acidity at N-9(imidazole N) |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1372. ± 8.4 | kJ/mol | IMRB | Sharma and Lee, 2002 | gas phase; Acidity at N-9(imidazole N) |
ΔrG° | 1441. ± 17. | kJ/mol | IMRB | Sharma and Lee, 2002 | gas phase; Less acidic N-10 site(aniline) |
C6H6N5- + =
By formula: C6H6N5- + H+ = C6H7N5
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1454. ± 17. | kJ/mol | G+TS | Sharma and Lee, 2002 | gas phase; Neutral acid is probably imine at N10(aniline site) and acidic site is N9 imidazole |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1424. ± 17. | kJ/mol | IMRB | Sharma and Lee, 2002 | gas phase; Neutral acid is probably imine at N10(aniline site) and acidic site is N9 imidazole |
C3H3F2O- + =
By formula: C3H3F2O- + H+ = C3H4F2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1466. ± 13. | kJ/mol | G+TS | Farid and McMahon, 1980 | gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1436. ± 13. | kJ/mol | IMRB | Farid and McMahon, 1980 | gas phase; Between PhCH2CN, CF3COCH3; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1584. ± 13. | kJ/mol | G+TS | Guo and Grabowski, 1991 | gas phase; Acidity between MeOH and tBuOH, comparable to EtOH |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1552. ± 13. | kJ/mol | IMRB | Guo and Grabowski, 1991 | gas phase; Acidity between MeOH and tBuOH, comparable to EtOH |
ΔrG° | 1556. ± 21. | kJ/mol | IMRB | Gronert and DePuy, 1989 | gas phase |
By formula: C4H4P- + H+ = C4H5P
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1415. ± 13. | kJ/mol | G+TS | Sunderlin, Panu, et al., 1994 | gas phase; Between FCH2CO2H and MeCHClCO2H. structure: P analog of pyrrole. Probably C protonation. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1385. ± 13. | kJ/mol | IMRB | Sunderlin, Panu, et al., 1994 | gas phase; Between FCH2CO2H and MeCHClCO2H. structure: P analog of pyrrole. Probably C protonation. |
By formula: C4H4As- + H+ = C4H5As
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1417. ± 13. | kJ/mol | G+TS | Sunderlin, Panu, et al., 1994 | gas phase; Between FCH2CO2H and MeCHClCO2H. Structure: As analog of pyrrole. Probably C protonation |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1385. ± 13. | kJ/mol | IMRB | Sunderlin, Panu, et al., 1994 | gas phase; Between FCH2CO2H and MeCHClCO2H. Structure: As analog of pyrrole. Probably C protonation |
C10H13NO2- + = C10H14NO2
By formula: C10H13NO2- + H+ = C10H14NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1057. ± 13. | kJ/mol | G+TS | Strittmatter, Wong, et al., 2000 | gas phase; This acidity is ca. 24 kcal/mol stronger than that given by G3(MP2)B3 calculations. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1028. ± 13. | kJ/mol | CIDC | Strittmatter, Wong, et al., 2000 | gas phase; This acidity is ca. 24 kcal/mol stronger than that given by G3(MP2)B3 calculations. |
By formula: C8H10FSi- + H+ = C8H11FSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1577. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1544. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
By formula: C8H10NO2Si- + H+ = C8H11NO2Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1567. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1534. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1636. ± 10. | kJ/mol | TDEq | Meot-ner and Kafafi, 1988 | gas phase; Acid: styrene. AM1 says ortho deprotonation prefered to alpha. Anchored to 88MEO scale. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1604. ± 8.4 | kJ/mol | TDEq | Meot-ner and Kafafi, 1988 | gas phase; Acid: styrene. AM1 says ortho deprotonation prefered to alpha. Anchored to 88MEO scale. |
C9H10F3Si- + = C9H11F3Si
By formula: C9H10F3Si- + H+ = C9H11F3Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1574. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1541. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
By formula: CH3O3S- + H+ = CH4O3S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1439. ± 21. | kJ/mol | G+TS | Grabowski and Lum, 1990 | gas phase; Comparable to MeCOCH2COMe; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1408. ± 21. | kJ/mol | IMRB | Grabowski and Lum, 1990 | gas phase; Comparable to MeCOCH2COMe; value altered from reference due to change in acidity scale |
By formula: C9H13OSi- + H+ = C9H14OSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1585. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1553. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
By formula: C8H10FSi- + H+ = C8H11FSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1579. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1547. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
C8H10ClSi- + = C8H11ClSi
By formula: C8H10ClSi- + H+ = C8H11ClSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1576. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1544. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
C8H10ClSi- + = C8H11ClSi
By formula: C8H10ClSi- + H+ = C8H11ClSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1575. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1543. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
C9H10F3Si- + = C9H11F3Si
By formula: C9H10F3Si- + H+ = C9H11F3Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1573. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1541. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
C3HF4O- + =
By formula: C3HF4O- + H+ = C3H2F4O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1429. ± 23. | kJ/mol | G+TS | Farid and McMahon, 1980 | gas phase; Between HCO2H, FCH2CO2H; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1401. ± 23. | kJ/mol | IMRB | Farid and McMahon, 1980 | gas phase; Between HCO2H, FCH2CO2H; value altered from reference due to change in acidity scale |
C5H5S- + =
By formula: C5H5S- + H+ = C5H6S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1593. ± 13. | kJ/mol | G+TS | DePuy, Kass, et al., 1988 | gas phase; Acid: 3-methylthiophene. Between MeOH, EtOH. 1 D exchange implies ring proton as site. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1561. ± 13. | kJ/mol | IMRB | DePuy, Kass, et al., 1988 | gas phase; Acid: 3-methylthiophene. Between MeOH, EtOH. 1 D exchange implies ring proton as site. |
C8H11Si- + =
By formula: C8H11Si- + H+ = C8H12Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1582. ± 9.2 | kJ/mol | G+TS | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1550. ± 8.4 | kJ/mol | IMRE | Irie, Kikukawa, et al., 2001 | gas phase; The anion may be ArSiH(Me)CH2-, based on LFER size and ab initio calculations - JEB |
C6HCl4- + =
By formula: C6HCl4- + H+ = C6H2Cl4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1541. ± 8.8 | kJ/mol | G+TS | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,3,4-tetrachlorobenzene. Anion assigned based on ab initio calculations. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1507. ± 8.4 | kJ/mol | IMRE | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,3,4-tetrachlorobenzene. Anion assigned based on ab initio calculations. |
C2H2NO2- + =
By formula: C2H2NO2- + H+ = C2H3NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1515. ± 19. | kJ/mol | EIAE | Shiga, Yamaoka, et al., 1972 | gas phase; From CH2=CHNO2 |
ΔrH° | <1563.1 | kJ/mol | G+TS | Bartmess, 1980 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1483. ± 22. | kJ/mol | H-TS | Shiga, Yamaoka, et al., 1972 | gas phase; From CH2=CHNO2 |
ΔrG° | <1531.3 | kJ/mol | IMRB | Bartmess, 1980 | gas phase |
C6HCl4- + =
By formula: C6HCl4- + H+ = C6H2Cl4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1520. ± 8.8 | kJ/mol | G+TS | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,3,5-tetrachlorobenzene. Anion assigned based on ab initio calculations. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1487. ± 8.4 | kJ/mol | IMRE | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,3,5-tetrachlorobenzene. Anion assigned based on ab initio calculations. |
C4H4N- + =
By formula: C4H4N- + H+ = C4H5N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1571. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; Acid: cyanocyclopropane; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1539. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; Acid: cyanocyclopropane; value altered from reference due to change in acidity scale |
C3H4FO- + =
By formula: C3H4FO- + H+ = C3H5FO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1496. ± 15. | kJ/mol | G+TS | Farid and McMahon, 1980 | gas phase; Between pyrrole, MeNO2; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1465. ± 15. | kJ/mol | IMRB | Farid and McMahon, 1980 | gas phase; Between pyrrole, MeNO2; value altered from reference due to change in acidity scale |
C6H2Cl3- + =
By formula: C6H2Cl3- + H+ = C6H3Cl3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1549. ± 8.8 | kJ/mol | G+TS | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,4-trichlorobenzene. Anion assigned based on ab initio calculations. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1517. ± 8.4 | kJ/mol | IMRE | Schlosser, Marzi, et al., 2001 | gas phase; Acid: 1,2,4-trichlorobenzene. Anion assigned based on ab initio calculations. |
H2O4P- + =
By formula: H2O4P- + H+ = H3O4P
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1383. ± 21. | kJ/mol | G+TS | Morris, Knighton, et al., 1997 | gas phase; Between HCl, HBr. For neutral heat, ΔHvap=3/2*H2SO4, plus ΔHf(liquid) |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1351. ± 21. | kJ/mol | IMRB | Morris, Knighton, et al., 1997 | gas phase; Between HCl, HBr. For neutral heat, ΔHvap=3/2*H2SO4, plus ΔHf(liquid) |
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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
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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