Monosulfur monofluoride


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
Δfgas3.100kcal/molReviewChase, 1998Data last reviewed in June, 1976
Quantity Value Units Method Reference Comment
gas,1 bar53.841cal/mol*KReviewChase, 1998Data last reviewed in June, 1976

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 8.846590
B 0.175506
C -0.033059
D 0.004187
E -0.044934
F 0.304110
G 64.24180
H 3.099910
ReferenceChase, 1998
Comment Data last reviewed in June, 1976

Constants of diatomic molecules

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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through July, 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 32S19F
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
A2 2Π1/2  483 1 H 2.6 1        A2 ← X2 R 25205 H
DiLonardo and Trombetti, 1970
  483 1 H 2.6 1        A2 ← X1 R 25606 H
DiLonardo and Trombetti, 1970
A1 2Π3/2  488 H 3.1  (0.554) 2 0.004    (1.598) A1 ← X1 R 
missing citation
X2 2Π1/2 (401) 3           
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
X1 2Π3/2 0    [0.5521740]     1.600574 4  
Amano and Hirota, 1973
ESR sp.
Carrington, Currie, et al., 1969; Byfleet, Carrington, et al., 1971

Notes

1From the A2 ← X2 progression; slightly different numbers are obtained from A2 ← X1. The assignements of both progressions are tentative.
2Only B3 = 0.540 and B5 = 0.532 have been measured. Individual rotational lines are diffuse for v'≥ 3. Bands with v' ≥ 7 are very diffuse.
3Based on the assignments of progressions A2 ← X2 and A2 ← X1; from the ESR spectrum Carrington, Currie, et al., 1969 derive A0 = -387 ± 25 Carrington, Currie, et al., 1969.
4Microwave sp. 6
5From the predissociation in the A1 ← X1 bands; see 2.
6μel(v=0) = 0.794 D Amano and Hirota, 1973; Byfleet, Carrington, et al., 1971 obtain μel(v=0)= 0.87 D Byfleet, Carrington, et al., 1971. Hfs parameter a + 1/2(b+c) = 428.60 MHz Carrington, Currie, et al., 1969, Amano and Hirota, 1973.

References

Go To: Top, Gas 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]

DiLonardo and Trombetti, 1970
DiLonardo, G.; Trombetti, A., Spectrum of SF, J. Chem. Soc. Faraday Trans., 1970, 66, 2694. [all data]

Amano and Hirota, 1973
Amano, T.; Hirota, E., Microwave spectrum of the SF radical, J. Mol. Spectrosc., 1973, 45, 417. [all data]

Carrington, Currie, et al., 1969
Carrington, A.; Currie, G.N.; Miller, T.A., Gas-phase electron resonance spectra of SF and SeF, J. Chem. Phys., 1969, 50, 2726. [all data]

Byfleet, Carrington, et al., 1971
Byfleet, C.R.; Carrington, A.; Russell, D.K., Electric dipole moments of open-shell diatomic molecules, Mol. Phys., 1971, 20, 271. [all data]


Notes

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