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Experimental data for SF6 (Sulfur Hexafluoride)

22 02 02 11 45
INChI INChIKey SMILES IUPAC name
InChI=1S/F6S/c1-7(2,3,4,5)6 SFZCNBIFKDRMGX-UHFFFAOYSA-N FS(F)(F)(F)(F)F
State Conformation
1A1G OH
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -1220.47 0.80 kJ mol-1 JANAF
Hfg(0K) enthalpy of formation -1206.50 0.80 kJ mol-1 JANAF
Entropy (298.15K) entropy 291.54 0.40 J K-1 mol-1 JANAF
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 16.92   kJ mol-1  
Heat Capacity (298.15K) heat capacity 96.96   J K-1 mol-1  
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1g 774   JANAF      
2 Eg 642   JANAF      
3 T1u 948   JANAF      
4 T1u 616   JANAF      
5 T2g 525   JANAF      
6 T2u 347   JANAF      

vibrational zero-point energy: 4681.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for SF6 (Sulfur Hexafluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.09107 0.09107 0.09107 1984Pat/Her:31

Calculated rotational constants for SF6 (Sulfur Hexafluoride).
Product of moments of inertia moments of inertia
6342838amu3Å6   2.9043677602536E-113gm3 cm6
Geometric Data
picture of Sulfur Hexafluoride

Point Group Oh


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rSF 1.561   1 2 1998Kuc
aFSF 90 2 1 3 1998Kuc symmetry
aFSF 180 2 1 7 1998Kuc symmetry

Cartesians
Atom x (Å) y (Å) z (Å)
S1 0.0000 0.0000 0.0000
F2 0.0000 0.0000 1.5607
F3 0.0000 1.5607 0.0000
F4 1.5607 0.0000 0.0000
F5 0.0000 -1.5607 0.0000
F6 -1.5607 0.0000 0.0000
F7 0.0000 0.0000 -1.5607

Atom - Atom Distances bond lengths
Distances in Å
  S1 F2 F3 F4 F5 F6 F7
S1   1.56071.56071.56071.56071.56071.5607
F2 1.5607   2.20722.20722.20722.20723.1214
F3 1.56072.2072   2.20723.12142.20722.2072
F4 1.56072.20722.2072   2.20723.12142.2072
F5 1.56072.20723.12142.2072   2.20722.2072
F6 1.56072.20722.20723.12142.2072   2.2072
F7 1.56073.12142.20722.20722.20722.2072  

Calculated geometries for SF6 (Sulfur Hexafluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
F2 S1 F3 90.000 F2 S1 F4 90.000
F2 S1 F5 90.000 F2 S1 F6 90.000
F2 S1 F7 180.000 F3 S1 F4 90.000
F3 S1 F5 180.000 F3 S1 F6 90.000
F3 S1 F7 90.000 F4 S1 F5 90.000
F4 S1 F6 180.000 F4 S1 F7 90.000
F5 S1 F6 90.000 F5 S1 F7 90.000
F6 S1 F7 90.000

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
F-S 6

Connectivity
Atom 1 Atom 2
S1 F2
S1 F3
S1 F4
S1 F5
S1 F6
S1 F7
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1G

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
15.320 0.020     webbook

Electron Affinity (eV)
Electron Affinity unc. reference
1.070 0.070 webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1G Oh True 0.000 0.000 0.000 0.000     Oh 0 0
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for SF6 (Sulfur Hexafluoride).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1G Oh True       Oh 0 0

Calculated electric quadrupole moments for SF6 (Sulfur Hexafluoride).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
4.490   1998Gus/Rui:163

Calculated electric dipole polarizability for SF6 (Sulfur Hexafluoride).

References
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squib reference DOI
1984Pat/Her:31 CW Patterson, F Herlemont, M Azizi, J Lemaire " Doppler-Free Two-Photon Spectroscopy of the 2nu3 band of SF6" J. Mol. Spect. 108, 31-41 (1984) 10.1016/0022-2852(84)90284-4
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
1998Kuc K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998 10.1007/978-3-642-45748-7 
JANAF Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.  
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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