Hydrogen anion
- Formula: H-
- Molecular weight: 1.00849
- IUPAC Standard InChI: InChI=1S/H/q-1
- IUPAC Standard InChIKey: KLGZELKXQMTEMM-UHFFFAOYSA-N
- CAS Registry Number: 12184-88-2
- Chemical structure:
This structure is also available as a 2d Mol file - Isotopologues:
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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 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
+
=
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1675.3 | kJ/mol | N/A | Shiell, Hu, et al., 2000 | gas phase; Given: 139714.8±1 cm-1 at 0K, or 399.465±0.003 kcal/mol; B |
| ΔrH° | 1675.3 | kJ/mol | N/A | Pratt, McCormack, et al., 1992 | gas phase; 399.46±0.01 kcal/mol at 0K; 0.94 correction, Gurvich, Veyts, et al.; B |
| ΔrH° | 1675.3 | kJ/mol | D-EA | Lykke, Murray, et al., 1991 | gas phase; Reported: 6082.99±0.15 cm-1, or 0.754195(18) eV; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1649.3 ± 0.42 | kJ/mol | H-TS | Shiell, Hu, et al., 2000 | gas phase; Given: 139714.8±1 cm-1 at 0K, or 399.465±0.003 kcal/mol; B |
| ΔrG° | 1649.3 | kJ/mol | H-TS | Lykke, Murray, et al., 1991 | gas phase; Reported: 6082.99±0.15 cm-1, or 0.754195(18) eV; B |
+
= (
•
)
By formula: H- + H3B = (H- • H3B)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 310. ± 12. | kJ/mol | Endo | Workman and Squires, 1988 | gas phase; From Endo threshold for hydride transfer to CO2; B |
| ΔrH° | 322. ± 8.4 | kJ/mol | Ther | Krivtsov, Titova, et al., 1977 | gas phase; value altered from reference due to conversion from electron convention to ion convention; B |
| ΔrH° | 341.4 | kJ/mol | Ther | Altschuller, 1955 | gas phase; B |
+
= (
•
)
By formula: H- + H2O = (H- • H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 74.1 ± 8.4 | kJ/mol | N/A | Miller, Leopold, et al., 1985 | gas phase; EA given is Vertical Detachment Energy. Est. Adiabatic: 1.40 eV, 32.3 kcal/mol; B |
| ΔrH° | 72. ± 15. | kJ/mol | Ther | Paulson and Henchman, 1984 | gas phase; HOH..HO- + H2 ->. See also Griffiths and Harris, 1989; B,M |
| ΔrH° | 57.74 | kJ/mol | CIDT | Paulson and Henchman, 1982 | gas phase; B |
+ CAS Reg. No. 10177-98-7 = (
• CAS Reg. No. 10177-98-7)
By formula: H- + CAS Reg. No. 10177-98-7 = (H- • CAS Reg. No. 10177-98-7)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 84. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase; affinity order: Et3SiH≤Et2SiH2≤nPnSiH3≤SiH4. nPnSiH3 is 0.4±0.2 kcal/mol > Et3SiH in ΔG. Et3SiH dHf(77PR) is wrong.; B |
| ΔrH° | 45. ± 23. | kJ/mol | IMRB | Hajdasz and Squires, 1986 | gas phase; B |
+
= (
•
)
By formula: H- + C6H16Si = (H- • C6H16Si)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 84. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase; affinity order: Et3SiH≤Et2SiH2≤nPnSiH3≤SiH4. nPnSiH3 is 0.4±0.2 kcal/mol > Et3SiH in ΔG. Et3SiH dHf(77PR) is wrong.; B |
| ΔrH° | 43. ± 23. | kJ/mol | IMRB | Hajdasz and Squires, 1986 | gas phase; B |
+
= (
•
)
By formula: H- + H4Si = (H- • H4Si)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 79. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase; B |
| ΔrH° | 94. ± 19. | kJ/mol | IMRE | Hajdasz and Squires, 1986 | gas phase; QCISD Calculation: H-A = 20.2, 99MOC; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 49. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase; B |
+
= (
•
)
By formula: H- + C4H12Si = (H- • C4H12Si)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 84. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase; Hydride affinity order: Et3SiH≤Et2SiH2≤nPnSiH3≤SiH4. dHf(Et2SiH2) in 77Ped/Ryl is 10 kcal/mol too negative, relative to Me2SiH2.Group Additivity imples ca. -25 kcal/mol.; B |
+
= (
•
)
By formula: H- + H3N = (H- • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 29.7 | kJ/mol | Est | Snodgrass, Coe, et al., 1995 | gas phase; Stated electron affinity is the Vertical Detachment Energy; B |
| ΔrH° | 35. | kJ/mol | PES | Coe, Snodgrass, et al., 1985 | gas phase; ΔrH<; M |
+
= (
•
)
By formula: H- + C3H9Al = (H- • C3H9Al)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | >354.8 ± 2.1 | kJ/mol | IMRB | den Berg, Ingemann, et al., 1992 | gas phase; Hydride affinity > (CF3)2CO. Computations indicate HOF(A-) ca. -46 kcal/mol, dHaff ca. 74 kcal/mol; B |
( •
) +
= (
• 2
)
By formula: (H- • H3N) + H3N = (H- • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 33.9 | kJ/mol | Est | Snodgrass, Coe, et al., 1995 | gas phase; Affinity: shift in apparent EA from lesser-solvated ion. Ignores any neutral-neutral bond.; B |
+
= (
•
)
By formula: H- + O2S = (H- • O2S)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 260. ± 67. | kJ/mol | IMRB | Sheldon, Currie, et al., 1985 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 240. ± 67. | kJ/mol | IMRB | Sheldon, Currie, et al., 1985 | gas phase; B |
+
= (
•
)
By formula: H- + C6H15B = (H- • C6H15B)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 290. ± 10. | kJ/mol | Endo | Workman and Squires, 1988 | gas phase; From Endo threshold for hydride transfer to CO2; B |
+
= (
•
)
By formula: H- + C6MoO6 = (H- • C6MoO6)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 184. ± 17. | kJ/mol | N/A | Lane and Squires, 1988 | gas phase; Hydride affinity between CH2=O and PhCH=O; B |
+
= (
•
)
By formula: H- + C6O6W = (H- • C6O6W)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 184. ± 17. | kJ/mol | N/A | Lane and Squires, 1988 | gas phase; Hydride affinity between CH2=O and PhCH=O; B |
+
= (
•
)
By formula: H- + H6B2 = (H- • H6B2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 309.6 | kJ/mol | Ther | Workman and Squires, 1988 | gas phase; Calculated from data on BH3..BH4-; B |
= C7H15O-
By formula: H- = C7H15O-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 181. ± 14. | kJ/mol | N/A | Boand, Houriet, et al., 1983 | gas phase; value altered from reference due to change in acidity scale; B |
By formula: H- + CH2BN = (H- • CH2BN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 112.5 | kJ/mol | N/A | Workman and Squires, 1988 | gas phase; Calculated from data on BH3..CN-; B |
= C7H13O-
By formula: H- = C7H13O-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 154. ± 9.6 | kJ/mol | N/A | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
+
= (
•
)
By formula: H- + C5FeO5 = (H- • C5FeO5)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 235. ± 13. | kJ/mol | IMRB | Lane, Sallans, et al., 1985 | gas phase; B |
+
= (
•
)
By formula: H- + HO = (H- • HO)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 217. ± 17. | kJ/mol | Ther | de Koening and Nibbering, 1984 | gas phase; B |
By formula: H- + H6Al2 = H7Al2-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 322. ± 17. | kJ/mol | CIDT | Goebbert, Hernandez, et al., 2005 | gas phase; B |
+
= H4Al-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 314. ± 17. | kJ/mol | CIDT | Goebbert, Hernandez, et al., 2005 | gas phase; B |
+
= C6H6F3Si-
By formula: H- + C6H5F3Si = C6H6F3Si-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 268. ± 13. | kJ/mol | CIDT | Krouse, Lardin, et al., 2003 | gas phase; B |
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.
Shiell, Hu, et al., 2000
Shiell, R.C.; Hu, X.K.; Hu, Q.C.J.; Hepburn, J.W.,
Threshold Ion-pair Production spectroscopy (TIPPS) of H2 and D2,
Faraday Disc. Chem. Soc., 2000, 115, 331, https://doi.org/10.1039/a909428h
. [all data]
Pratt, McCormack, et al., 1992
Pratt, S.T.; McCormack, E.F.; Dehmer, J.L.; Dehmer, P.M.,
Field-Induced Ion-Pair Formation in Molecular Hydrogen,
Phys. Rev. Lett., 1992, 68, 5, 584, https://doi.org/10.1103/PhysRevLett.68.584
. [all data]
Gurvich, Veyts, et al.
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B.,
Hemisphere Publishing, NY, 1989, V. 1 2, Thermodynamic Properties of Individual Substances, 4th Ed. [all data]
Lykke, Murray, et al., 1991
Lykke, K.R.; Murray, K.K.; Lineberger, W.C.,
Threshold Photodetachment of H-,
Phys. Rev. A, 1991, 43, 11, 6104, https://doi.org/10.1103/PhysRevA.43.6104
. [all data]
Workman and Squires, 1988
Workman, D.B.; Squires, R.R.,
Hydride Binding Energies of Boranes,
Inorg. Chem., 1988, 27, 11, 1846, https://doi.org/10.1021/ic00284a003
. [all data]
Krivtsov, Titova, et al., 1977
Krivtsov, N.V.; Titova, K.V.; Rosolovskii, V.Ya.,
Thermochemical study of complex borates,
Russ. J. Inorg. Chem., 1977, 22, 374. [all data]
Altschuller, 1955
Altschuller, A.P.,
Lattice Energies and Related Thermodynamic Properties of the Alkali Metal Borohydrides and of the Borohydride Ion,
J. Am. Chem. Soc., 1955, 77, 21, 5455, https://doi.org/10.1021/ja01626a001
. [all data]
Miller, Leopold, et al., 1985
Miller, T.M.; Leopold, D.G.; Murray, K.K.; Lineberger, W.C.,
The Photoelectron Spectrum of H3O-,
Bull. Am. Phys. Soc., 1985, 30, 880. [all data]
Paulson and Henchman, 1984
Paulson, J.F.; Henchman, M.J.,
On the Formation of H3O- in an Ion-Molecule Reaction
in Ionic Processes in the Gas Phase,, M.A. Almoster Ferreira, Ed., Reidel, Dordrecht,, 1984, 331. [all data]
Griffiths and Harris, 1989
Griffiths, W.J.; Harris, F.M.,
Amended Interpretation of the Results Obtained in an Experimental Investigation of the Structure of the H3O- Ion,
Int. J. Mass Spectrom. Ion Proc., 1989, 87, 1, R25, https://doi.org/10.1016/0168-1176(89)80017-5
. [all data]
Paulson and Henchman, 1982
Paulson, J.F.; Henchman, M.J.,
The Hydrated Negative Hydrogen Ion,
Bull. Am. Phys. Soc., 1982, 27, 108. [all data]
Hajdasz, Ho, et al., 1994
Hajdasz, D.J.; Ho, Y.; Squires, R.R.,
Gas-Phase Chemistry of Pentacoordinate Silicon Hydrides,
J. Am. Chem. Soc., 1994, 116, 23, 10751, https://doi.org/10.1021/ja00102a045
. [all data]
Hajdasz and Squires, 1986
Hajdasz, D.J.; Squires, R.R.,
Hypervalent silicon hydrides: SiH5-,
J. Am. Chem. Soc., 1986, 108, 3139. [all data]
Snodgrass, Coe, et al., 1995
Snodgrass, J.T.; Coe, J.V.; Freidhoff, C.B.; Mchugh, K.M.; Arnold, S.T.; Bowen, K.H.,
Negative ion photoelectron spectroscopy of NH2-(NH3)1 and NH2-(NH3)2: Gas phase basicities of partially solvated anions,
J. Phys. Chem., 1995, 99, 24, 9675, https://doi.org/10.1021/j100024a006
. [all data]
Coe, Snodgrass, et al., 1985
Coe, J.V.; Snodgrass, J.T.; Friedhoff, C.B.; McHugh, K.M.; Bowen, K.H.,
Negative ion photoelectron spectroscopy of the negative ion H-(NH3),
J. Chem. Phys., 1985, 83, 3169. [all data]
den Berg, Ingemann, et al., 1992
den Berg, K.J. van; Ingemann, S.; Nibbering, N.M.M.,
Gas Phase Reactions of Negative Ions with Trimethylaluminum: Formation and Reactivity of the Me3AlH- Ion.,
Org. Mass Spectrom., 1992, 27, 4, 523, https://doi.org/10.1002/oms.1210270427
. [all data]
Sheldon, Currie, et al., 1985
Sheldon, J.C.; Currie, G.J.; Lahnstein, J.; Hayes, R.N.; Bowie, J.H.,
Gas Phase Ion Chemistry of Ambident Nucleophiles. Reactions of Alkoxide and Thiomethoxide Negative Ions with Hydrogen Free Molecules.,
Nouv. J. Chem., 1985, 9, 205. [all data]
Lane and Squires, 1988
Lane, K.R.; Squires, R.R.,
Hydride Transfer to Transition Metal Carbonyls in the Gas Phase. Formation and Relative Stabilities of Anionic Formyl Complexes,
Polyhedron, 1988, 7, 16-17, 1609, https://doi.org/10.1016/S0277-5387(00)81786-6
. [all data]
Boand, Houriet, et al., 1983
Boand, G.; Houriet, R.; Baumann, T.,
The gas phase acidity of aliphatic alcohols,
J. Am. Chem. Soc., 1983, 105, 2203. [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]
Lane, Sallans, et al., 1985
Lane, K.R.; Sallans, L.; Squires, R.R.,
Anion affinities of transition metal carbonyls. A thermochemical correlation for iron tetracarbonyl acyl negative ions,
J. Am. Chem. Soc., 1985, 107, 5369. [all data]
de Koening and Nibbering, 1984
de Koening, L.J.; Nibbering, N.M.M.,
Formation of the Long-Lived H2O-. Ion in the Gas Phase,
J. Am. Chem. Soc., 1984, 106, 25, 7971, https://doi.org/10.1021/ja00337a054
. [all data]
Goebbert, Hernandez, et al., 2005
Goebbert, D.J.; Hernandez, H.; Francisco, J.S.; Wenthold, P.G.,
The binding energy and bonding in dialane,
J. Am. Chem. Soc., 2005, 127, 33, 11684-11689, https://doi.org/10.1021/ja0424070
. [all data]
Krouse, Lardin, et al., 2003
Krouse, I.H.; Lardin, H.A.; Wenthold, P.G.,
Gas-phase ion chemistry and ion thermochemistry of phenyltrifluorosilane,
Int. J. Mass Spectrom., 2003, 227, 3, 303-314, https://doi.org/10.1016/S1387-3806(03)00080-0
. [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
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