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magnesium hydroxide


Gas phase thermochemistry 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.

Quantity Value Units Method Reference Comment
Deltafgas-136.80kcal/molReviewChase, 1998Data last reviewed in December, 1975
Quantity Value Units Method Reference Comment
gas,1 bar63.877cal/mol*KReviewChase, 1998Data 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. - 1800.1800. - 6000.
A 19.2320023.26770
B 3.1119321.135970
C -0.139038-0.191042
D -0.1004580.011410
E -0.316364-3.486062
F -143.7330-149.7490
G 84.4490985.01190
H -136.8000-136.8000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1975 Data last reviewed in December, 1975

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, 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
Deltafsolid-221.00kcal/molReviewChase, 1998Data last reviewed in December, 1975
Quantity Value Units Method Reference Comment
solid15.10cal/mol*KReviewChase, 1998Data last reviewed in December, 1975

Solid 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. - 1000.
A 20.29240
B 17.79160
C -16.47420
D 6.365302
E -0.519815
F -229.4560
G 32.10490
H -221.0000
ReferenceChase, 1998
Comment Data last reviewed in December, 1975

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed 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

OH stretch 3829.8 Ar IR Andrews and Wang, 2005
Wang and Andrews, 2005
OH stretch 3815.4 H2 IR Wang and Andrews, 2005
MgO a-stretch 867.2 Ar IR Tague and Andrews, 1994
Andrews and Wang, 2005
Wang and Andrews, 2005
MgO a-stretch 846.5 H2 IR Wang and Andrews, 2005

Additional references: Jacox, 1998, page 282


References

Go To: Top, Gas phase thermochemistry data, Condensed 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]

Andrews and Wang, 2005
Andrews, L.; Wang, X., Infrared Spectra of the Group 2 Metal Dihydroxide Molecules, Inorg. Chem., 2005, 44, 1, 11, https://doi.org/10.1021/ic0483794 . [all data]

Wang and Andrews, 2005
Wang, X.; Andrews, L., Infrared Spectra and Electronic Structure Calculations for the Group 2 Metal M(OH), J. Phys. Chem. A, 2005, 109, 12, 2782, https://doi.org/10.1021/jp044660s . [all data]

Tague and Andrews, 1994
Tague, T.J., Jr.; Andrews, L., Pulsed Laser Evaporated Magnesium Atom Reactions with Hydrogen: Infrared Spectra of Five Magnesium Hydride Molecules, J. Phys. Chem., 1994, 98, 35, 8611, https://doi.org/10.1021/j100086a004 . [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]


Notes

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