return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Experimental > One molecule all properties

Experimental data for CF3CHF2 (pentafluoroethane)

22 02 02 11 45
Other names
Ethane, 1,​1,​1,​2,​2-​pentafluoro-; Ethane, pentafluoro-;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2HF5/c3-1(4)2(5,6)7/h1H GTLACDSXYULKMZ-UHFFFAOYSA-N FC(F)(F)C(F)F Ethane, 1,​1,​1,​2,​2-​pentafluoro-
State Conformation
1A' CS
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
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 A' 3002   1996Elt/Gui:111-126       CH stretch
2 A' 1392           CH bend
3 A' 1310           CF3 a-str
4 A' 1199           CF3 s-stretch
5 A' 1142           CF2 s-str
6 A' 868           CC stretch
7 A' 727           CF2 wag
8 A' 578           CF2 sciss
9 A' 523           CF3 s-bend
10 A' 364           CF3 rock
11 A' 250           CF2 wag
12 A" 1358           CH bend
13 A" 1225           CF3 a-str
14 A" 1146           CF2 a-str
15 A" 592           CF3 a-bend
16 A" 420           CF3 rock
17 A" 208           CF2 twist
18 A" 75           torsion

vibrational zero-point energy: 8189.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CF3CHF2 (pentafluoroethane).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.12312 0.08071 0.06691 1967Tip/Bri:1606

Calculated rotational constants for CF3CHF2 (pentafluoroethane).
Product of moments of inertia moments of inertia
7204705amu3Å6   3.2990140173774E-113gm3 cm6
Geometric Data
picture of pentafluoroethane

Point Group Cs


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

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CF3CHF2 (pentafluoroethane).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 1
H-C 1
C-F 5

Connectivity
Atom 1 Atom 2
C1 C2
C1 F3
C1 F4
C1 F5
C2 F6
C2 F7
C2 H8
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
13.600 0.500     1989Gri/Har:1575
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 1A' Cs True       1.563 1991Mey/Mor:3860 ± 0.005 DT Cs 2 3
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 CF3CHF2 (pentafluoroethane).
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 1A' Cs True       Cs 2 3

Calculated electric quadrupole moments for CF3CHF2 (pentafluoroethane).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
4.623   2015Tha/Wu:144302

Calculated electric dipole polarizability for CF3CHF2 (pentafluoroethane).

References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
squib reference DOI
1967Tip/Bri:1606 AB Tipton, CO Britt, JE Boggs "Microwave Spectrum, Structure, and Barrier to Internal Rotation of Pentafluoroethane" J. Chem. Phys. 1967, 46(5) , 1606 10.1063/1.1840912
1989Gri/Har:1575 WJ Griffiths, FM Harris "Double Ionization Energies of the Fluoroethane Molecules C2H5F, CH3CHF2, CH2FCHF2, CH3CF3, CHF2CF3 and C2F6 measured by Double-charge=transfer Spectroscopy" J. Chem. Soc. Faraday Trans 2, 1989, 85(9), 1575-1584 10.1039/F29898501575
1991Mey/Mor:3860 CW Meyer, G Morrison "Dipole Moments of Seven Partially Halogenated Ethane Refrigerants" J. Phys. Chem. 1991, 95, 3860-3866 10.1021/j100162a077
1996Elt/Gui:111-126 S Eltayeb, GA Guirgis, AR Fanning, JR Durig "Raman and Far-Infrared Spectra, Barriers to Internal Rotation and Ab Initio Calculations of CF3CF2X, where X = H, C1, Br, and I" J. RAMAN SPECT. 27, 111-126 (1996) 10.1002/(SICI)1097-4555(199602)27:2<111::AID-JRS935>3.0.CO;2-Q
2015Tha/Wu:144302 AJ Thakkar, T Wu "How well do static electronic dipole polarizabilities from gas-phase experiments compare with density functional and MP2 computations?" J. Chem. Phys. 143, 144302 (2015) 10.1063/1.4932594

Got a better number? Please email us at [email protected]


Browse
PreviousNext