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 bar74.247cal/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 (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. to 6000.
A 19.09190
B 0.783077
C -0.000024
D 0.000002
E -0.281991
F -6.672871
G 95.53090
H 0.000000
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

Gas phase ion energetics 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.

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to S4+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
2.220 ± 0.030LPDHunsicker, Jones, et al., 1995Vertical Detachment Energy: 2.42±0.05 eV); B

Ionization energy determinations

IE (eV) Method Reference Comment
10.1 ± 0.2EIRosinger, Grade, et al., 1983LBLHLM
10.4 ± 0.5EIHagemann, 1962RDSH

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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   λmin 
 (nm) 
 λmax 
 (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, Gas phase ion energetics 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]

Hunsicker, Jones, et al., 1995
Hunsicker, S.; Jones, R.O.; Gantefor, G., Rings and chains in sulfur cluster anions S- to S-9(-): Theory (simulated annealing) and experiment (photoelectron detachment), J. Chem. Phys., 1995, 102, 15, 5917, https://doi.org/10.1063/1.469326 . [all data]

Rosinger, Grade, et al., 1983
Rosinger, W.; Grade, M.; Hirschwald, W., Detection of ion states of S2 to S8 by electron impact, Int. J. Mass Spectrom. Ion Processes, 1983, 47, 239. [all data]

Hagemann, 1962
Hagemann, R., Determination de la chaleur de formation de S2O par spectrometrie de masse, Compt. Rend., 1962, 255, 1102. [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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