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Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology |
You are here: Experimental > One molecule all properties |
Other names |
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Magnesium hydroxide; |
INChI | INChIKey | SMILES | IUPAC name |
---|---|---|---|
InChI=1S/Mg.H2O/h;1H2/q+1;/p-1 | UNYOJUYSNFGNDV-UHFFFAOYSA-M | [Mg]O | |
InChI=1S/Mg.H2O/h;1H2/q+1;/p-1 | UNYOJUYSNFGNDV-UHFFFAOYSA-M | [OH-].[Mg+] |
State | Conformation |
---|---|
2A' | CS |
Property | Value | Uncertainty | units | Reference | Comment |
---|---|---|---|---|---|
Hfg(298.15K) ![]() |
-94.45 | 33.00 | kJ mol-1 | 1989OPE/TEW9152 | Entropy and HH from Gurvich. |
Hfg(0K) ![]() |
-92.00 | 33.00 | kJ mol-1 | 1989OPE/TEW9152 | Entropy and HH from Gurvich. |
Entropy (298.15K) ![]() |
232.62 | 8.40 | J K-1 mol-1 | Gurvich | |
Integrated Heat Capacity (0 to 298.15K) ![]() |
11.12 | kJ mol-1 | Gurvich | ||
Heat Capacity (298.15K) ![]() |
42.99 | J K-1 mol-1 | webbook | Entropy and HH from Gurvich. Cp from Webbook |
Mode Number | Symmetry | Frequency | Intensity | Comment | Description | ||||
---|---|---|---|---|---|---|---|---|---|
Fundamental(cm-1) | Harmonic(cm-1) | Reference | (km mol-1) | unc. | Reference | ||||
2 | Σ | 750 | VEEL5 | ||||||
3 | Π | 188 | VEEL5 |
A | B | C | reference | comment |
---|---|---|---|---|
0.50158 | 1999App/And:10919 |
Product of moments of inertia ![]() | ||||
---|---|---|---|---|
33.60937 | amu Å2 | 5.581055E-39 | gm cm2 |
Point Group C∞v
Description | Value | unc. | Connectivity | Reference | Comment | |||
---|---|---|---|---|---|---|---|---|
Atom 1 | Atom 2 | Atom 3 | Atom 4 | |||||
rMgO | 1.767 | 1 | 2 | 1999App/And:10919 | re structure | |||
rOH | 0.940 | 1 | 3 | 1992Bar/And:225 | re | |||
aHOMg | 180 | 2 | 1 | 3 | 1999App/And:10919 | quasilinear |
Atom | x (Å) | y (Å) | z (Å) |
---|---|---|---|
O1 | 0.0000 | 0.0000 | 0.0000 |
Mg2 | 0.0000 | 0.0000 | 1.7670 |
H3 | 0.0000 | 0.0000 | -0.9400 |
O1 | Mg2 | H3 | |
---|---|---|---|
O1 | 1.7670 | 0.9400 | |
Mg2 | 1.7670 | 2.7070 | |
H3 | 0.9400 | 2.7070 |
Experimental Bond Angles (degrees) from cartesians
atom1 | atom2 | atom3 | angle |
---|---|---|---|
Mg2 | O1 | H3 | 180.000 |
Bond descriptions
Bond Type | Count |
---|---|
H-O | 1 |
O-Mg | 1 |
Atom 1 | Atom 2 |
---|---|
O1 | Mg2 |
O1 | H3 |
Energy (cm-1) | Degeneracy | reference | description |
---|---|---|---|
0 | 2 | 2A' |
Ionization Energy | I.E. unc. | vertical I.E. | v.I.E. unc. | reference |
---|---|---|---|---|
7.500 | 0.300 | webbook |
State | Config | State description | Conf description | Exp. min. | Dipole (Debye) | Reference | comment | Point Group | Components | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
x | y | z | total | dipole | quadrupole | ||||||||
1 | 1 | 2A' | Cs | True | C∞v | 1 | 1 |
State | Config | State description | Conf description | Exp. min. | Quadrupole (D Å) | Reference | comment | Point Group | Components | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|
xx | yy | zz | dipole | quadrupole | ||||||||
1 | 1 | 2A' | Cs | True | C∞v | 1 | 1 |
squib | reference | DOI |
---|---|---|
1989OPE/TEW9152 | Operti, L; Tews, EC; MacMahon, TJ; Freiser, BS, Thermochemical properties of Gas-Phase MgOH and MgO determined by FTMS. JACS 111, 9152, 1989 | 10.1021/ja00208a002 |
1992Bar/And:225 | Barclay, W.L.; Anderson, M.A.; Ziurys, L.M. "The millimeter-wave spectrum of the MgOH radical." Chemical Physics Letters. 196, 225-232 (1992) | 10.1016/0009-2614(92)85959-E |
1999App/And:10919 | AJ Apponi, MA Anderson, LM Ziurys "High resolution spectroscopy of MgOH (X 2Sigma+) in its v2 mode: Further evidence for quasilinearity" J. Chem. Phys. 111, 10919, 1999 | 10.1063/1.480455 |
Gurvich | Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989 | |
VEEL5 | M.E. Jacox, Vibrational and Electronic Energy Levels of Polyatomic Transient Molecules, J. Phys. Chem.Ref. Data, Monograph 3 (1994) (updated data in NIST Chemistry Webbook - http://webbook.nist.gov/chemistry/ | |
webbook | NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) | 10.18434/T4D303 |
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