Hydrogen cation
- Formula: H+
- Molecular weight: 1.00739
- IUPAC Standard InChIKey: GPRLSGONYQIRFK-UHFFFAOYSA-N
- CAS Registry Number: 12408-02-5
- Chemical structure:
This structure is also available as a 2d Mol file - Isotopologues:
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- 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 251 to 300, reactions 301 to 350, reactions 351 to 400, reactions 401 to 450, reactions 451 to 500, reactions 501 to 550, 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
- Gas phase ion energetics data
- Options:
Reaction thermochemistry data
Go To: Top, 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
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 551 to 600
By formula: C9H7O2- + H+ = C9H8O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1427. ± 9.2 | 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° | 1398. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
By formula: C11H9O4- + H+ = C11H10O4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1413. ± 9.2 | 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° | 1384. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
By formula: C9H6BrO2- + H+ = C9H7BrO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1407. ± 9.2 | 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° | 1378. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C7H13S- + =
By formula: C7H13S- + H+ = C7H14S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1475. ± 9.2 | 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° | 1449. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
By formula: C9H4N- + H+ = C9H5N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1471. ± 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° | 1438. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C10H15- + =
By formula: C10H15- + H+ = C10H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1510. ± 9.2 | 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° | 1485. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C14H11- + =
By formula: C14H11- + H+ = C14H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1475. ± 9.2 | 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° | 1443. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C14H11- + =
By formula: C14H11- + H+ = C14H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1468. ± 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° | 1437. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C15H13- + =
By formula: C15H13- + H+ = C15H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1469. ± 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° | 1437. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C4H5N2- + =
By formula: C4H5N2- + H+ = C4H6N2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1484. ± 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° | 1454. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C18H15- + =
By formula: C18H15- + H+ = C18H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1412. ± 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° | 1381. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C13H10F- + =
By formula: C13H10F- + H+ = C13H11F
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1507. ± 9.2 | 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° | 1479. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
By formula: C10H11N2- + H+ = C10H12N2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1478. ± 10. | 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° | 1450. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C8H5FN- + =
By formula: C8H5FN- + H+ = C8H6FN
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1460. ± 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° | 1433. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C2HFN- + =
By formula: C2HFN- + H+ = C2H2FN
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1544. ± 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° | 1513. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C4H9S- + =
By formula: C4H9S- + H+ = C4H10S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1477. ± 9.2 | 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° | 1451. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C7H13O- + =
By formula: C7H13O- + H+ = C7H14O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1564. ± 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° | 1536. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C3H7N2O- + =
By formula: C3H7N2O- + H+ = C3H8N2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1514. ± 10. | 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° | 1484. ± 10. | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C2H4NO- + =
By formula: C2H4NO- + H+ = C2H5NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1508. ± 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° | 1479. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C5H10NO- + =
By formula: C5H10NO- + H+ = C5H11NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1498. ± 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° | 1469. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C4H6NO3- + =
By formula: C4H6NO3- + H+ = C4H7NO3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1471. ± 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° | 1442. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C2HCl3NO- + =
By formula: C2HCl3NO- + H+ = C2H2Cl3NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1436. ± 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° | 1406. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C7H8N- + =
By formula: C7H8N- + H+ = C7H9N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1526. ± 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° | 1496. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C8H10N- + =
By formula: C8H10N- + H+ = C8H11N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1523. ± 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° | 1493. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C2H2F3O2S- + = C2H3F3O2S
By formula: C2H2F3O2S- + H+ = C2H3F3O2S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1452. ± 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° | 1422. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C8H4F3O2- + =
By formula: C8H4F3O2- + H+ = C8H5F3O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1390. ± 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° | 1361. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C4H3S- + =
By formula: C4H3S- + H+ = C4H4S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1595. ± 13. | kJ/mol | G+TS | DePuy, Kass, et al., 1988 | gas phase; Between MeOH, EtOH. D exchange implies anion at C-2. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1561. ± 13. | kJ/mol | IMRB | DePuy, Kass, et al., 1988 | gas phase; Between MeOH, EtOH. D exchange implies anion at C-2. |
By formula: C6H5F5NS- + H+ = C6H6F5NS
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1414. ± 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° | 1383. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C9H8N- + =
By formula: C9H8N- + H+ = C9H9N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1471. ± 10. | 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° | 1443. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C10H12NO- + =
By formula: C10H12NO- + H+ = C10H13NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1564. ± 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° | 1536. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C3H6NO2- + =
By formula: C3H6NO2- + H+ = C3H7NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1514. ± 9.6 | 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° | 1485. ± 9.2 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
CH2NO- + =
By formula: CH2NO- + H+ = CH3NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1505. ± 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° | 1476. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C7H6NO- + =
By formula: C7H6NO- + H+ = C7H7NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1481. ± 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° | 1452. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C5H7N2- + =
By formula: C5H7N2- + H+ = C5H8N2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1480. ± 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° | 1450. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C7H6NO2- + =
By formula: C7H6NO2- + H+ = C7H7NO2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1490. ± 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° | 1459. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C10H7O- + =
By formula: C10H7O- + H+ = C10H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1438. ± 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° | 1408. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C9H8NO- + =
By formula: C9H8NO- + H+ = C9H9NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1471. ± 10. | 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° | 1443. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
C4H7S- + =
By formula: C4H7S- + H+ = C4H8S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1563. ± 17. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between iPrOH, MeCN. Reprotonation site uncertain. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1536. ± 17. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between iPrOH, MeCN. Reprotonation site uncertain. |
By formula: CHO2S- + H+ = CH2O2S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1501. ± 13. | kJ/mol | G+TS | Downard, Bowie, et al., 1992 | gas phase; Acidity between CF3CH2OH, MeNO2. From MeSO- + O2 -> |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1473. ± 13. | kJ/mol | IMRB | Downard, Bowie, et al., 1992 | gas phase; Acidity between CF3CH2OH, MeNO2. From MeSO- + O2 -> |
C8H8NO- + =
By formula: C8H8NO- + H+ = C8H9NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1505. ± 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° | 1474. ± 8.4 | kJ/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1439. ± 21. | kJ/mol | D-EA | Yen, Garand, et al., 2010 | gas phase |
ΔrH° | 1647. ± 21. | kJ/mol | D-EA | Dibeler, Reese, et al., 1961 | gas phase; From HC≡C-(C≡C)2-C≡N. The derived acidity is ca. 40 kcal/mol too weak, based on homologs. |
C3H4NO2S- + =
By formula: C3H4NO2S- + H+ = C3H5NO2S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1407. ± 9.6 | kJ/mol | G+TS | Taft, Abboud, et al., 1988 | gas phase; Revised: this is 0.9 smaller than reported (91TAF) |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1375. ± 8.4 | kJ/mol | IMRE | Taft, Abboud, et al., 1988 | gas phase; Revised: this is 0.9 smaller than reported (91TAF) |
C4H5O- + =
By formula: C4H5O- + H+ = C4H6O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1572. ± 8.8 | kJ/mol | G+TS | Chou, Dahlke, et al., 1993 | gas phase; barrier for opening to CH2=C(CHO)CH2-: 29 kcal/mol. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1543. ± 8.4 | kJ/mol | IMRE | Chou, Dahlke, et al., 1993 | gas phase; barrier for opening to CH2=C(CHO)CH2-: 29 kcal/mol. |
C5H7- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1601. ± 5.9 | kJ/mol | G+TS | Fattahi, McCarthy, et al., 2003 | gas phase; Maybe be ring-opened HCC-C(Me)2- structure |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1566. ± 5.4 | kJ/mol | IMRE | Fattahi, McCarthy, et al., 2003 | gas phase; Maybe be ring-opened HCC-C(Me)2- structure |
C7H7O- + =
By formula: C7H7O- + H+ = C7H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1679. ± 13. | kJ/mol | G+TS | Dahlke and Kass, 1992 | gas phase; Acid: anisole. Between o-methoxyphenide and Me2NH. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1648. ± 13. | kJ/mol | IMRB | Dahlke and Kass, 1992 | gas phase; Acid: anisole. Between o-methoxyphenide and Me2NH. |
CH3OS- + =
By formula: CH3OS- + H+ = CH4OS
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1502. ± 13. | kJ/mol | G+TS | Downard, Bowie, et al., 1992 | gas phase; Acid: MeS-O-H. Between CF3CH2OH, MeNO2. EA < SO2. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1473. ± 13. | kJ/mol | IMRB | Downard, Bowie, et al., 1992 | gas phase; Acid: MeS-O-H. Between CF3CH2OH, MeNO2. EA < SO2. |
CH2- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1711.7 ± 1.7 | kJ/mol | D-EA | Leopold, Murray, et al., 1985 | gas phase; Singlet-triplet splitting of CH2 = 9.0 kcal |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1679.5 ± 2.0 | kJ/mol | H-TS | Leopold, Murray, et al., 1985 | gas phase; Singlet-triplet splitting of CH2 = 9.0 kcal |
C5H10N- + =
By formula: C5H10N- + H+ = C5H11N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1626. ± 17. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1598. ± 17. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
C3H4F- + =
By formula: C3H4F- + H+ = C3H5F
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1628. ± 17. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1598. ± 17. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
C4H7O- + =
By formula: C4H7O- + H+ = C4H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1626. ± 17. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1598. ± 17. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between H2O, furan. Reprotonation site uncertain |
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.
Taft, 1987
Taft, R.W.,
The Nature and Analysis of Substitutent Electronic Effects,
Personal communication. See also Prog. Phys. Org. Chem., 1987, 16, 1. [all data]
DePuy, Kass, et al., 1988
DePuy, C.H.; Kass, S.R.; Bean, G.P.,
Formation and Reactions of Heteroaromatic Anions in the Gas Phase,
J. Org. Chem., 1988, 53, 19, 4427, https://doi.org/10.1021/jo00254a001
. [all data]
Dahlke and Kass, 1991
Dahlke, G.D.; Kass, S.R.,
Substituent Effects in the Gas Phase - 1-Substituted Allyl Anions,
J. Am. Chem. Soc., 1991, 113, 15, 5566, https://doi.org/10.1021/ja00015a008
. [all data]
Downard, Bowie, et al., 1992
Downard, K.M.; Bowie, J.H.; O'Hair, R.A.J.; Krempp, M.; DePuy, C.H.,
Gas Phase Reactions of the Methylsulfinyl and Methyldisulfide Anions,
Int. J. Mass Spectrom. Ion Proc., 1992, 120, 3, 217, https://doi.org/10.1016/0168-1176(92)85050-A
. [all data]
Yen, Garand, et al., 2010
Yen, T.A.; Garand, E.; Shreve, A.T.; Neumark, D.M.,
Anion Photoelectron Spectroscopy of C3N- and C5N-,
J. Phys. Chem. A, 2010, 114, 9, 3215-3220, https://doi.org/10.1021/jp9093996
. [all data]
Dibeler, Reese, et al., 1961
Dibeler, V.H.; Reese, R.M.; Franklin, J.L.,
Mass spectrometric study of cyanogen and cyanoacetylenes,
J. Am. Chem. Soc., 1961, 83, 1813. [all data]
Taft, Abboud, et al., 1988
Taft, R.W.; Abboud, J.L.M.; Anvia, F.; Berthelot, M.; Fujio, M.; Gal, J.-F.; Headley, A.D.; Henderson, W.G.,
Regarding the Inherent Dependence of Resonance Effects of Strongly Conjugated Substituents on Electron Demand,
J. Am. Chem. Soc., 1988, 110, 6, 1797, https://doi.org/10.1021/ja00214a023
. [all data]
Chou, Dahlke, et al., 1993
Chou, P.K.; Dahlke, G.D.; Kass, S.R.,
Unimolecular Rearrangements of Carbanions in the Gas Phase .2. Cyclopropyl Anions,
J. Chem. Soc. Chem. Comm., 1993, 115, 1, 315, https://doi.org/10.1021/ja00054a045
. [all data]
Fattahi, McCarthy, et al., 2003
Fattahi, A.; McCarthy, R.E.; Ahmad, M.R.; Kass, S.R.,
Why does cyclopropene have the acidity of an acetylene but the bond energy of methane?,
J. Am. Chem. Soc., 2003, 125, 38, 11746-11750, https://doi.org/10.1021/ja035725s
. [all data]
Dahlke and Kass, 1992
Dahlke, G.D.; Kass, S.R.,
The Ortho-dehydrophenoxy Anion,
Int. J. Mass Spectrom. Ion Proc., 1992, 117, 633, https://doi.org/10.1016/0168-1176(92)80117-J
. [all data]
Leopold, Murray, et al., 1985
Leopold, D.G.; Murray, K.K.; Miller, A.E.S.; Lineberger, W.C.,
Methylene: A study of the X3B1 and the 1A1 states by photoelectron spectroscopy of CH2- and CD2-,
J. Chem. Phys., 1985, 83, 4849. [all data]
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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.