Magnesium monohydroxide
- Formula: HMgO
- Molecular weight: 41.3123
- IUPAC Standard InChI: InChI=1S/Mg.H2O/h;1H2/q+1;/p-1
- IUPAC Standard InChIKey: UNYOJUYSNFGNDV-UHFFFAOYSA-M
- CAS Registry Number: 12141-11-6
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -39.379 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1975 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 54.120 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1975 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 6000. |
|---|---|
| A | 11.44060 |
| B | 2.022441 |
| C | -0.440268 |
| D | 0.034037 |
| E | -0.153830 |
| F | -43.39130 |
| G | 66.51621 |
| H | -39.37739 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1975 |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase 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: Marilyn E. Jacox
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Π | 2 | Bend | 188 ± 2 | H | gas | LF | Bunker, Kolbuszewski, et al., 1995 |
| Σ+ | 3 | MgO stretch | 750 ± 3 | gas | LF | Bunker, Kolbuszewski, et al., 1995 | |
Additional references: Jacox, 1998, page 138; Jacox, 2003, page 23; Barclay, Anderson, et al., 1992; Nuccio, Apponi, et al., 1995; Apponi, Anderson, et al., 1999
Notes
| H | (1/2)(2ν) |
References
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Bunker, Kolbuszewski, et al., 1995
Bunker, P.R.; Kolbuszewski, M.; Jensen, P.; Brumm, M.; Anderson, M.A.; Barclay, W.L., Jr.; Ziurys, L.M.; Ni, Y.; Harris, D.O.,
New rovibrational data for MgOH and MgOD and the internuclear potential function of the ground electronic state,
Chem. Phys. Lett., 1995, 239, 4-6, 217, https://doi.org/10.1016/0009-2614(95)00479-N
. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Barclay, Anderson, et al., 1992
Barclay, W.L., Jr.; Anderson, M.A.; Ziurys, L.M.,
The millimeter-wave spectrum of the MgOH radical (X 2Σ+),
Chem. Phys. Lett., 1992, 196, 3-4, 225, https://doi.org/10.1016/0009-2614(92)85959-E
. [all data]
Nuccio, Apponi, et al., 1995
Nuccio, B.P.; Apponi, A.J.; Ziurys, L.M.,
Millimeter-wave rotational spectroscopy of MgOD and CaOD (X 2Σ+),
J. Chem. Phys., 1995, 103, 21, 9193, https://doi.org/10.1063/1.470030
. [all data]
Apponi, Anderson, et al., 1999
Apponi, A.J.; Anderson, M.A.; Ziurys, L.M.,
High resolution spectroscopy of MgOH (X [sup 2]Σ[sup +]) in its V[sub 2] mode: Further evidence for quasilinearity,
J. Chem. Phys., 1999, 111, 24, 10919, https://doi.org/10.1063/1.480455
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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