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Tetrasulfur


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
gas,1 bar310.65J/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. - 6000.
A 79.88051
B 3.276394
C -0.000100
D 0.000010
E -1.179851
F -27.91929
G 399.7013
H 0.000000
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

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:   A


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

gas A-X 425 575 Meyer, Oommen, et al., 1971
Meyer, Stroyer-Hansen, et al., 1972
Billmers and Smith, 1991
Tx = 19300 Ar Hassanzadeh and Andrews, 1992
Billmers and Smith, 1991
Tx = 18870 Kr Meyer, Oommen, et al., 1971
Meyer, Stroyer-Hansen, et al., 1972
Billmers and Smith, 1991

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

680 gas Ra Picquenard, Boumedien, et al., 1993
661.6 Ar IR Meyer and Stroyer-Hansen, 1972
Brabson, Mielke, et al., 1991
Hassanzadeh and Andrews, 1992
660 s Kr IR Meyer and Stroyer-Hansen, 1972
660 Xe IR Meyer and Stroyer-Hansen, 1972
575 gas Ra Picquenard, Boumedien, et al., 1993
483 w m Kr IR Meyer and Stroyer-Hansen, 1972
303 gas Ra Picquenard, Boumedien, et al., 1993
320 m Kr IR Meyer and Stroyer-Hansen, 1972
270 w m Kr IR Meyer and Stroyer-Hansen, 1972

Additional references: Jacox, 1994, page 214; Jacox, 1998, page 260; McCarthy, Thorwirth, et al., 2004; Thorwirth, McCarthy, et al., 2005

Notes

wWeak
mMedium
sStrong
xEnergy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.

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]

Meyer, Oommen, et al., 1971
Meyer, B.; Oommen, T.V.; Jensen, D., Color of liquid sulfur, J. Phys. Chem., 1971, 75, 7, 912, https://doi.org/10.1021/j100677a012 . [all data]

Meyer, Stroyer-Hansen, et al., 1972
Meyer, B.; Stroyer-Hansen, T.; Oommen, T.V., The visible spectrum of S3 and S4, J. Mol. Spectrosc., 1972, 42, 2, 335, https://doi.org/10.1016/0022-2852(72)90089-6 . [all data]

Billmers and Smith, 1991
Billmers, R.I.; Smith, A.L., Ultraviolet-visible absorption spectra of equilibrium sulfur vapor: molar absorptivity spectra of S3 and S4, J. Phys. Chem., 1991, 95, 11, 4242, https://doi.org/10.1021/j100164a015 . [all data]

Hassanzadeh and Andrews, 1992
Hassanzadeh, P.; Andrews, L., Vibronic absorption spectra of sulfur (S3 and S4) in solid argon, J. Phys. Chem., 1992, 96, 16, 6579, https://doi.org/10.1021/j100195a015 . [all data]

Picquenard, Boumedien, et al., 1993
Picquenard, E.; Boumedien, M.S.; Corset, J., Resonance Raman spectra of the S4 molecule in the sulfur vapor, J. Mol. Struct., 1993, 293, 63, https://doi.org/10.1016/0022-2860(93)80015-N . [all data]

Meyer and Stroyer-Hansen, 1972
Meyer, B.; Stroyer-Hansen, T., Infrared spectra of S4, J. Phys. Chem., 1972, 76, 26, 3968, https://doi.org/10.1021/j100670a013 . [all data]

Brabson, Mielke, et al., 1991
Brabson, G.D.; Mielke, Z.; Andrews, L., Infrared spectra and structures of isotopically enriched sulfur (S3 and S4) in solid argon, J. Phys. Chem., 1991, 95, 1, 79, https://doi.org/10.1021/j100154a019 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [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]

McCarthy, Thorwirth, et al., 2004
McCarthy, M.C.; Thorwirth, S.; Gottlieb, C.A.; Thaddeus, P., Tetrasulfur, S[sub 4]: Rotational spectrum, interchange tunneling, and geometrical structure, J. Chem. Phys., 2004, 121, 2, 632, https://doi.org/10.1063/1.1769372 . [all data]

Thorwirth, McCarthy, et al., 2005
Thorwirth, S.; McCarthy, M.C.; Gottlieb, C.A.; Thaddeus, P.; Gupta, H.; Stanton, J.F., Rotational spectroscopy and equilibrium structures of S[sub 3] and S[sub 4], J. Chem. Phys., 2005, 123, 5, 054326, https://doi.org/10.1063/1.1942495 . [all data]


Notes

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