dihydrogen selenide
- Formula: H2Se
- Molecular weight: 80.98
- IUPAC Standard InChI: InChI=1S/H2Se/h1H2
- IUPAC Standard InChIKey: SPVXKVOXSXTJOY-UHFFFAOYSA-N
- CAS Registry Number: 7783-07-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Hydrogen selenide
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, 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.
Individual Reactions
HSe- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 341.48 ± 0.70 | kcal/mol | D-EA | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol |
| ΔrH° | 342.7 ± 9.1 | kcal/mol | G+TS | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale |
| ΔrH° | 340.50 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnO-(t); ; ΔS(EA)=5.5 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 335.19 ± 0.80 | kcal/mol | H-TS | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol |
| ΔrG° | 336.4 ± 9.0 | kcal/mol | IMRB | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale |
| ΔrG° | 334.20 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnO-(t); ; ΔS(EA)=5.5 |
+
= (
•
)
By formula: NO2- + H2Se = (NO2- • H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 20.9 ± 1.0 | kcal/mol | TDEq | Wlodek, Luczynski, et al., 1983 | gas phase; Equilibration with SO2..NO2- |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 10.3 ± 3.5 | kcal/mol | TDEq | Wlodek, Luczynski, et al., 1983 | gas phase; Equilibration with SO2..NO2- |
( • 2
) +
= (
• 3
)
By formula: (NO2- • 2H2Se) + H2Se = (NO2- • 3H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.30 ± 0.70 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 3.10 ± 0.50 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
( •
) +
= (
• 2
)
By formula: (NO3- • H2Se) + H2Se = (NO3- • 2H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.20 ± 0.50 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 4.60 ± 0.70 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
( •
) +
= (
• 2
)
By formula: (NO2- • H2Se) + H2Se = (NO2- • 2H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.50 ± 0.50 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 4.70 ± 0.30 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
+
= (
•
)
By formula: NO3- + H2Se = (NO3- • H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.20 ± 0.60 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 7.60 ± 0.50 | kcal/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to H2Se+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 9.892 ± 0.005 | eV | N/A | N/A | L |
| Quantity | Value | Units | Method | Reference | Comment |
| Proton affinity (review) | 169.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 161.7 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.886 ± 0.003 | PI | Gibson, Greene, et al., 1986 | LBLHLM |
| 9.897 ± 0.002 | TE | Borlin, Jungen, et al., 1986 | LBLHLM |
| 10.00 ± 0.05 | EI | Balkis, Gaines, et al., 1976 | LLK |
| 9.93 | PE | Natalis, 1973 | LLK |
| 9.88 | PE | Potts and Price, 1972 | LLK |
| 9.93 | PE | Delwiche, Natalis, et al., 1970 | RDSH |
| 9.882 ± 0.001 | S | Price, Teegan, et al., 1950 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| HSe+ | 13.266 ± 0.007 | H | PI | Gibson, Greene, et al., 1986 | LBLHLM |
| HSe+ | 13.6 ± 0.2 | H | EI | Balkis, Gaines, et al., 1976 | LLK |
| HSe+ | 13.8 ± 0.2 | H | EI | Dixon, Holtz, et al., 1972 | LLK |
| Se+ | 11.916 ± 0.006 | H2 | PI | Gibson, Greene, et al., 1986 | LBLHLM |
| Se+ | 12.6 ± 0.1 | ? | EI | Dixon, Holtz, et al., 1972 | LLK |
De-protonation reactions
HSe- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 341.48 ± 0.70 | kcal/mol | D-EA | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol; B |
| ΔrH° | 342.7 ± 9.1 | kcal/mol | G+TS | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale; B |
| ΔrH° | 340.50 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnO-(t); ; ΔS(EA)=5.5; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 335.19 ± 0.80 | kcal/mol | H-TS | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol; B |
| ΔrG° | 336.4 ± 9.0 | kcal/mol | IMRB | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale; B |
| ΔrG° | 334.20 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnO-(t); ; ΔS(EA)=5.5; B |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Takehiko Shimanouchi
Symmetry: C2ν Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 2345 | B | 2344.5 S | gas | ||||
| a1 | 2 | Bend | 1034 | A | 1034.2 S | gas | ||||
| b1 | 3 | Anti str | 2358 | B | 2357.8 S | gas | ||||
Source: Shimanouchi, 1972
Notes
| S | Strong |
| A | 0~1 cm-1 uncertainty |
| B | 1~3 cm-1 uncertainty |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Stoneman and Larson, 1986
Stoneman, R.C.; Larson, D.J.,
Photodetachment spectroscopy of SeH- in a magnetic field,
J. Phys. B:, 1986, 19, 405. [all data]
Wagman, Evans, et al., 1982
Wagman, D.D.; Evans, W.H.; Parker, V.B.; Schumm, R.H.; Halow, I.; Bailey, S.M.; Churney, K.L.; Nuttall, R.L.,
The NBS Tables of Chemical Thermodynamic Properties (NBS Tech Note 270),
J. Phys. Chem. Ref. Data, Supl. 1, 1982, 11. [all data]
Dixon, Holtz, et al., 1972
Dixon, D.A.; Holtz, D.; Beauchamp, J.L.,
Acidity, basicity, and gas-phase ion chemistry of hydrogen selenide by ion cyclotron resonance spectroscopy,
Inorg. Chem., 1972, 11, 960. [all data]
Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S.,
Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements,
J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l
. [all data]
Wlodek, Luczynski, et al., 1983
Wlodek, S.; Luczynski, Z.; Wincel, H.,
Gas - Phase Solvation of NO2- and NO3- by Ethyl Nitrate,
Int. J. Mass Spectrom. Ion Phys., 1983, 52, 2-3, 149, https://doi.org/10.1016/0020-7381(83)85036-0
. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Gibson, Greene, et al., 1986
Gibson, S.T.; Greene, J.P.; Berkowitz, J.,
A photoionization study of SeH and H2Se,
J. Chem. Phys., 1986, 85, 4815. [all data]
Borlin, Jungen, et al., 1986
Borlin, K.; Jungen, M.; Karlsson, L.; Maripuu, R.,
Photoionization of H2Se: High-resolution and threshold photoelectron spectra,
Chem. Phys., 1986, 113, 309. [all data]
Balkis, Gaines, et al., 1976
Balkis, T.; Gaines, A.F.; Ozgen, G.; Ozgen, I.T.; Flowers, M.C.,
Ionization of hydrogen sul- phide, selenide and telluride by electron impact,
J. Chem. Soc. Faraday Trans. 2, 1976, 72, 524. [all data]
Natalis, 1973
Natalis, P.,
Contribution a la spectroscopie photoelectronique. Effets de l'autoionisation dans less spectres photoelectroniques de molecules diatomiques et triatomiques,
Acad. R. Belg. Mem. Cl. Sci. Collect. 8, 1973, 41, 1. [all data]
Potts and Price, 1972
Potts, A.W.; Price, W.C.,
Photoelectron spectra and valence shell orbital structures of groups V VI hydrides,
Proc. R. Soc. London A:, 1972, 326, 181. [all data]
Delwiche, Natalis, et al., 1970
Delwiche, J.; Natalis, P.; Collin, J.E.,
High resolution photoelectron spectrometry of H2S and H2Se,
Intern. J. Mass Spectrom. Ion Phys., 1970, 5, 443. [all data]
Price, Teegan, et al., 1950
Price, W.C.; Teegan, J.P.; Walsh, A.D.,
The far ultra-violet absorption spectra of the hydrides and deuterides of sulphur, selenium and tellurium and of the methyl derivatives of hydrogen sulphide,
Proc. Roy. Soc. (London), 1950, A201, 600. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy 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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