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, 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° | 1428.8 ± 2.9 | kJ/mol | D-EA | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol |
| ΔrH° | 1434. ± 38. | kJ/mol | G+TS | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale |
| ΔrH° | 1424.7 | kJ/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnO-(t); ; ΔS(EA)=5.5 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1402.4 ± 3.3 | kJ/mol | H-TS | Stoneman and Larson, 1986 | gas phase; Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol |
| ΔrG° | 1407. ± 38. | kJ/mol | IMRB | Dixon, Holtz, et al., 1972 | gas phase; Between H2S, HCl; value altered from reference due to change in acidity scale |
| ΔrG° | 1398.3 | kJ/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° | 87.4 ± 4.2 | kJ/mol | TDEq | Wlodek, Luczynski, et al., 1983 | gas phase; Equilibration with SO2..NO2- |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 43. ± 15. | kJ/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° | 30.5 ± 2.9 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 13.0 ± 2.1 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
( •
) +
= (
• 2
)
By formula: (NO3- • H2Se) + H2Se = (NO3- • 2H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 30.1 ± 2.1 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 19.2 ± 2.9 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
( •
) +
= (
• 2
)
By formula: (NO2- • H2Se) + H2Se = (NO2- • 2H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 35.6 ± 2.1 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 19.7 ± 1.3 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
+
= (
•
)
By formula: NO3- + H2Se = (NO3- • H2Se)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 72.0 ± 2.5 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 31.8 ± 2.1 | kJ/mol | TDAs | Wlodek, Luczynski, et al., 1983 | gas phase |
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.
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]
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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