Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

magnesium sulphide


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Constants of diatomic molecules, 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
Deltafgas145.23kJ/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
gas,1 bar225.49J/mol*KReviewChase, 1998Data last reviewed in September, 1977

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 800.800. - 2000.2000. - 6000.
A 51.11480199.035034.52960
B -139.9390-190.31101.196611
C 360.407084.053700.015877
D -223.8690-13.15290-0.004516
E -0.078348-24.8251025.05680
F 133.203025.63380168.0760
G 314.5860421.0220291.2810
H 145.2270145.2270145.2270
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in September, 1977 Data last reviewed in September, 1977 Data last reviewed in September, 1977

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, 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-345.72kJ/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
solid50.30J/mol*KReviewChase, 1998Data last reviewed in September, 1977

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 3000.
A 48.60009
B 3.685472
C 0.021388
D 0.015067
E -0.369222
F -361.6286
G 105.9347
H -345.7243
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

Constants of diatomic molecules

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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through March, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 24Mg32S
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B 1Sigma+ 23052.59 497.34 Z 2.333  0.25518 0.00155  0.269E-6  2.1956 B lrarrow X R 23036.98 Z
Wilhelm, 1932; missing citation
X 1Sigma+ 0 528.74 Z 2.704  0.26797 0.00176  0.276E-6  2.1425  

Notes

1From mass-spectrometric studies Colin, 1961, Colin, Goldfinger, et al., 1964.

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, 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]

Wilhelm, 1932
Wilhelm, H.A., Band spectra produced by certain explosion mixtures, Iowa State Coll. J. Sci., 1932, 6, 475-478. [all data]

Colin, 1961
Colin, R., Sur la stabilite de quelques sulfures inorganiques, Ind. Chim. Belge, 1961, 26, 1129. [all data]

Colin, Goldfinger, et al., 1964
Colin, R.; Goldfinger, P.; Jeunehomme, M., Mass-spectrometric studies of vaporization of the sulphides of calcium, strontium and barium. The dissociation energy of S2 and SO, Trans. Faraday Soc., 1964, 60, 306. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Constants of diatomic molecules, References