AsH2 anion
- Formula: AsH2-
- Molecular weight: 76.93803
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Reaction thermochemistry data
Go To: Top, 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: 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
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 |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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: 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, Reaction thermochemistry data, 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.
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]
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]
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]
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]
Notes
Go To: Top, Reaction thermochemistry data, 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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