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Cyclic octaatomic sulfur


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 bar102.83cal/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. - 6000.
A 43.18110
B 0.458649
C -0.124314
D 0.010610
E -0.542580
F -14.71330
G 151.9000
H 0.000000
ReferenceChase, 1998
Comment Data last reviewed in September, 1977

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), References, Notes

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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

Electron affinity determinations

EA (eV) Method Reference Comment
3.590 ± 0.050LPDHunsicker, Jones, et al., 1995Vertical Detachment Energy: 3.87 eV.; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.3 ± 0.2EIRosinger, Grade, et al., 1983LBLHLM
9.04 ± 0.03PIBerkowitz and Lifshitz, 1968RDSH
9.6 ± 0.2EIBerkowitz and Chupka, 1964RDSH
7.3 ± 0.3EIHagemann, 1962RDSH
9.40PERichardson and Weinberger, 1975Vertical value; LLK
9.23PEBoschi and Schmidt, 1973Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
S3+12.6 ± 0.5?EIBerkowitz and Chupka, 1964RDSH
S4+12.5 ± 0.3?EIBerkowitz and Chupka, 1964RDSH
S5+10.2S3PIBerkowitz and Lifshitz, 1968RDSH
S6+<=11.0S2PIBerkowitz and Lifshitz, 1968RDSH
S6+10.1 ± 0.3S2EIBerkowitz and Chupka, 1964RDSH

Mass spectrum (electron ionization)

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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin GAZ DE FRANCE D.E.T.N., B.P. 33, LA PLAINE ST. DENIS, FRANCE
NIST MS number 12510

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References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), 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]

Berkowitz and Lifshitz, 1968
Berkowitz, J.; Lifshitz, C., Photoionization of high temperature vapors. II. Sulfur molecular species, J. Chem. Phys., 1968, 48, 4346. [all data]

Berkowitz and Chupka, 1964
Berkowitz, J.; Chupka, W.A., Vaporization processes involving sulfur, J. Chem. Phys., 1964, 40, 287. [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]

Richardson and Weinberger, 1975
Richardson, N.V.; Weinberger, P., The electronic structure of the S8 molecule, J. Electron Spectrosc. Relat. Phenom., 1975, 6, 109. [all data]

Boschi and Schmidt, 1973
Boschi, R.; Schmidt, W., The photoelectron spectrum and structure of sulfur in the gas phase at 140 C, Inorg. Nucl. Chem. Lett., 1973, 9, 643. [all data]


Notes

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