Calcium monohydride
- Formula: CaH
- Molecular weight: 41.086
- IUPAC Standard InChI: InChI=1S/Ca.H
- IUPAC Standard InChIKey: PKHCKQOIOXDRJH-UHFFFAOYSA-N
- CAS Registry Number: 14452-75-6
- Chemical structure:
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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
Ca- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1476.1 ± 3.9 | kJ/mol | D-EA | Petrunin, Andersen, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1452. ± 4.2 | kJ/mol | H-TS | Petrunin, Andersen, et al., 1996 | gas phase |
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 as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 0.930 ± 0.050 | PD | Rackwitz, Feldman, et al., 1977 | B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 5.86 ± 0.09 | S | Kaving and Lindgren, 1974 | LLK |
De-protonation reactions
Ca- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1476.1 ± 3.9 | kJ/mol | D-EA | Petrunin, Andersen, et al., 1996 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1452. ± 4.2 | kJ/mol | H-TS | Petrunin, Andersen, et al., 1996 | gas phase; B |
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.
Petrunin, Andersen, et al., 1996
Petrunin, V.V.; Andersen, H.H.; Balling, P.; Andersen, T.,
Structural Properties of the Negative Calcium Ion: Binding Energies and Fine-structure Splitting,
Phys. Rev. Lett., 1996, 76, 5, 744, https://doi.org/10.1103/PhysRevLett.76.744
. [all data]
Rackwitz, Feldman, et al., 1977
Rackwitz, R.; Feldman, D.; Kaiser, H.J.; Heincke, E.,
Photodetachment bei einigen zweiatomigen negativen hydridionen: BeH-, MgH-, CaH-, ZnH-, PH-, AsH-,
Z. Naturforsch. A:, 1977, 32, 594. [all data]
Kaving and Lindgren, 1974
Kaving, B.; Lindgren, B.,
Ultraviolet absorption spectrum of the CaH molecule. II. The structure of the d-complex around 2850 A,
Phys. Scr., 1974, 10, 81. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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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