AsH2 anion
- Formula: AsH2-
- Molecular weight: 76.93803
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Gas phase ion energetics data
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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
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.270 ± 0.030 | PD | Smyth and Brauman, 1972 | |
| <1.08 ± 0.24 | D-EA | Ebinghaus, Kraus, et al., 1964 | From AsH3 |
| 1.25583 | N/A | Check, Faust, et al., 2001 | CrOO-(q); ; ΔS(EA)=1.7 |
Protonation reactions
H2As- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 357.5 ± 2.1 | kcal/mol | G+TS | Gal, Maria, et al., 1989 | gas phase |
| ΔrH° | 357.8 ± 3.1 | kcal/mol | D-EA | Smyth and Brauman, 1972 | gas phase |
| ΔrH° | 361.9 ± 6.1 | kcal/mol | G+TS | Wyatt, Holtz, et al., 1974 | gas phase; Between PH3, H2S; value altered from reference due to change in acidity scale |
| ΔrH° | <359.7 ± 4.6 | kcal/mol | EIAE | Ebinghaus, Kraus, et al., 1964 | gas phase; From AsH3 |
| ΔrH° | 359.00 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; CrOO-(q); ; ΔS(EA)=1.7 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 350.0 ± 2.0 | kcal/mol | IMRE | Gal, Maria, et al., 1989 | gas phase |
| ΔrG° | 354.4 ± 6.0 | kcal/mol | IMRB | Wyatt, Holtz, et al., 1974 | gas phase; Between PH3, H2S; value altered from reference due to change in acidity scale |
| ΔrG° | 352.20 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; CrOO-(q); ; ΔS(EA)=1.7 |
References
Go To: Top, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Smyth and Brauman, 1972
Smyth, K.C.; Brauman, J.I.,
Photodetachment of electrons from amide and arsenide ions: The electron affinities of NH2 and AsH2.,
J. Chem. Phys., 1972, 56, 4620. [all data]
Ebinghaus, Kraus, et al., 1964
Ebinghaus, H.; Kraus, K.; Neuert, H.; Muller-Duysing, W.,
Negative Ionen durch Elecktronenresonanzeinfang in PH3, AsH3, und SiH4,
Z. Naturfor., 1964, 19A, 732. [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]
Gal, Maria, et al., 1989
Gal, J.-F.; Maria, P.-C.; Decouzon, M.,
The Gas-Phase Acidity and Bond Dissociation Energies of Hydrogen Telluride,
Int. J. Mass Spectrom. Ion Proc., 1989, 93, 1, 87, https://doi.org/10.1016/0168-1176(89)83076-9
. [all data]
Wyatt, Holtz, et al., 1974
Wyatt, R.H.; Holtz, D.; McMahon, T.B.; Beauchamp, J.L.,
Acidity, basicity, and ion-molecule reactions of arsine in the gas phase by ICR spectroscopy,
Inorg. Chem., 1974, 13, 1511. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EAneutral Electron affinity of neutral species 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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