Selenium monohydride
- Formula: HSe
- Molecular weight: 79.97
- IUPAC Standard InChI: InChI=1S/HSe/h1H
- IUPAC Standard InChIKey: VUGWMQXJZSOYNI-UHFFFAOYSA-N
- CAS Registry Number: 13940-22-2
- Chemical structure:
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, 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
Se- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1422. ± 4.6 | kJ/mol | D-EA | Vandevraye, Drag, et al., 2012 | gas phase; Given: 2.0206046(11) eV |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1397. ± 5.0 | kJ/mol | H-TS | Vandevraye, Drag, et al., 2012 | gas phase; Given: 2.0206046(11) eV |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Constants of diatomic molecules, 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
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
View reactions leading to HSe+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°(+) ion | 1100. | kJ/mol | N/A | N/A |
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 2.212525 ± 0.000044 | LPD | Stoneman and Larson, 1986 | Wagman, Evans, et al., 1982 ΔHf(AH) = 7.1 kcal/mol; B |
| 2.210 ± 0.030 | PD | Smyth and Brauman, 1972 | B |
| 2.29921 | N/A | Check, Faust, et al., 2001 | MnO-(t); ; ΔS(EA)=5.5; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.845 ± 0.003 | PI | Gibson, Greene, et al., 1986 | LBLHLM |
| 9.79 | S | Donovan, Little, et al., 1972 | LLK |
De-protonation reactions
Se- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1422. ± 4.6 | kJ/mol | D-EA | Vandevraye, Drag, et al., 2012 | gas phase; Given: 2.0206046(11) eV; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1397. ± 5.0 | kJ/mol | H-TS | Vandevraye, Drag, et al., 2012 | gas phase; Given: 2.0206046(11) eV; B |
Constants of diatomic molecules
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: Klaus P. Huber and Gerhard H. Herzberg
Data collected through July, 1977
| Symbol | Meaning |
|---|---|
| State | electronic state and / or symmetry symbol |
| Te | minimum electronic energy (cm-1) |
| ωe | vibrational constant – first term (cm-1) |
| ωexe | vibrational constant – second term (cm-1) |
| ωeye | vibrational constant – third term (cm-1) |
| Be | rotational constant in equilibrium position (cm-1) |
| αe | rotational constant – first term (cm-1) |
| γe | rotation-vibration interaction constant (cm-1) |
| De | centrifugal distortion constant (cm-1) |
| βe | rotational constant – first term, centrifugal force (cm-1) |
| re | internuclear distance (Å) |
| Trans. | observed transition(s) corresponding to electronic state |
| ν00 | position of 0-0 band (units noted in table) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F | 1 | F ← X1 | 71190 | |||||||||
| ↳Donovan, Little, et al., 1972 | ||||||||||||
| E | 2 | E ← X1 | 69604 | |||||||||
| ↳Donovan, Little, et al., 1972 | ||||||||||||
| D | 3 | D ← X1 | 66814 | |||||||||
| ↳Donovan, Little, et al., 1972 | ||||||||||||
| C | 4 | C ← X1 R | 55797 HQ | |||||||||
| ↳Donovan, Little, et al., 1972 | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| A (2Σ+) | (31500) | [1232] (H) | (172) 5 6 | |||||||||
| A ← X1 R | 31048 (H) | |||||||||||
| ↳Lindgren, 1968 | ||||||||||||
| X2 2Π1/2 | (1815) 7 | (2400) 5 | [7.78] 8 | [1.475] 9 | ||||||||
| ↳Radford, 1964; Carrington, Currie, et al., 1970; Byfleet, Carrington, et al., 1971 | ||||||||||||
| X1 2Π3/2 | 0 | (2400) 5 | [7.78] 8 | [1.475] 9 | ||||||||
| ↳Radford, 1964; Carrington, Currie, et al., 1970; Byfleet, Carrington, et al., 1971 | ||||||||||||
Notes
| 1 | Weak diffuse band. |
| 2 | Diffuse band. |
| 3 | Strong diffuse band. |
| 4 | Strong double-headed band. |
| 5 | From isotope relations between SeH and SeD. |
| 6 | Diffuse bands. |
| 7 | From the photodetachment spectra of SeH- and SeD-. |
| 8 | Λ-doubling frequencies Carrington, Currie, et al., 1970. |
| 9 | ESR sp. 12 |
| 10 | Extrapolation of the vibrational levels in A 2Σ+ assuming dissociation of this state into 2S + 1D. |
| 11 | From Rydberg assignments of Donovan, Little, et al., 1972; doubtful. |
| 12 | μel = 0.49 D Byfleet, Carrington, et al., 1971. 77Se hf coupling Carrington, Currie, et al., 1970. |
| 13 | μel = 0.483 D Byfleet, Carrington, et al., 1971. 77Se hf coupling Carrington, Currie, et al., 1970. |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Vandevraye, Drag, et al., 2012
Vandevraye, M.; Drag, C.; Blondel, C.,
Electron affinity of selenium measured by photodetachment microscopy,
Phys. Rev. A, 2012, 85, 1, 015401, https://doi.org/10.1103/PhysRevA.85.015401
. [all data]
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]
Smyth and Brauman, 1972
Smyth, K.C.; Brauman, J.I.,
Photodetachment of an electron from selenide ion the electron affinity and spin- orbit coupling constant for SeH,
J. Chem. Phys., 1972, 56, 5993. [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]
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]
Donovan, Little, et al., 1972
Donovan, R.J.; Little, D.J.; Konstantatos, J.,
Vacuum ultraviolet spectra of transient molecules and radicals,
J. Chem. Soc. Faraday Trans. 2, 1972, 68, 1812. [all data]
Lindgren, 1968
Lindgren, B.,
Diffuse spectra of SeH and SeD,
J. Mol. Spectrosc., 1968, 28, 536. [all data]
Radford, 1964
Radford, H.E.,
Synthesis of diatomic radicals,
J. Chem. Phys., 1964, 40, 2732. [all data]
Carrington, Currie, et al., 1970
Carrington, A.; Currie, G.N.; Lucas, N.J.D.,
Electron resonance of gaseous diatomic hydrides. II. Rotational constant, Λ-doubling, hyperfine structure and dipole moment of SeH and SeD,
Proc. R. Soc. London A, 1970, 315, 355. [all data]
Byfleet, Carrington, et al., 1971
Byfleet, C.R.; Carrington, A.; Russell, D.K.,
Electric dipole moments of open-shell diatomic molecules,
Mol. Phys., 1971, 20, 271. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
EA Electron affinity 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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