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barium sulphide


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
Deltafgas37.78kJ/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
gas,1 bar248.86J/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.

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Temperature (K) 298. - 3000.3000. - 6000.
A 35.10736-683.4271
B 6.630134352.7480
C -5.977430-58.02957
D 1.8512163.216220
E -0.0948011004.491
F 26.752661400.531
G 289.0897317.8924
H 37.7820237.78202
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1977 Data last reviewed in September, 1977

Condensed 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
Deltafsolid-463.59kJ/molReviewChase, 1998Data last reviewed in September, 1977
Quantity Value Units Method Reference Comment
solid78.35J/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.

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Temperature (K) 298. - 3000.
A 49.35710
B 9.299091
C -0.991007
D 0.175505
E -0.245622
F -479.5420
G 133.9690
H -463.5870
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

Constants of diatomic molecules

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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, 1976

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 138Ba32S
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B 1Sigma+ 27060.29 254.10 Z 0.438  0.08604 0.00044    2.7475 B larrow X R 26997.74 Z
Barrow, Burton, et al., 1971
A 1Sigma+ 14493 294.3 1 3.08  0.09353 1 0.00072    2.635 A larrow X R 14450
Clements and Barrow, 1968; Barrow, Burton, et al., 1971
a (3Pi0+) 14570 2 (235) 3   (0.0785) 3     (2.88)  
X 1Sigma+ 0 379.42 Z 0.8842  0.10331 0.0003188  0.306E-07  2.5074 4  
Melendres, Hebert, et al., 1969

Notes

1Extensive perturbations arising from successive vibrational levels of three perturbing states or sub-states of smaller B values.
2missing note
3From perturbations in A 1Sigma+; vibrational numbering unknown.
4Mol. beam el. reson. 6
5Thermochemical value (mass-spectrom.) Colin, Goldfinger, et al., 1964, corrected to a 1Sigma ground state.
6muel(v) = [10.853 + 0.021(v+1/2)]D.

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]

Barrow, Burton, et al., 1971
Barrow, R.F.; Burton, W.G.; Jones, P.A., Electronic spectrum of gaseous BaS. Rotational analysis of bands of the A-X and B-X systems, Trans. Faraday Soc., 1971, 67, 902. [all data]

Clements and Barrow, 1968
Clements, R.M.; Barrow, R.F., The internuclear distance in gaseous barium sulphide, Chem. Commun., 1968, 1408. [all data]

Melendres, Hebert, et al., 1969
Melendres, C.A.; Hebert, A.J.; Street, K., Jr., Radio-frequency Stark spectra and dipole moment of BaS, J. Chem. Phys., 1969, 51, 855. [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

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