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Experimental data for C2HF3 (Trifluoroethylene)

22 02 02 11 45
Other names
Ethene, trifluoro-; Ethylene, trifluoro-; Ethylene trifluoride; Trifluoroethene; 1,1,2-Trifluoroethylene; 1,1,2-trifluoroethene;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2HF3/c3-1-2(4)5/h1H MIZLGWKEZAPEFJ-UHFFFAOYSA-N FC(F)=CF 1,1,2-trifluoroethene
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
Hfg(298.15K) enthalpy of formation -474.00 8.40 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   8.40 kJ mol-1 webbook
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

Calculated vibrational frequencies for C2HF3 (Trifluoroethylene).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for C2HF3 (Trifluoroethylene).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of Trifluoroethylene

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
rCC 1.341 0.012 1 2 1987Kuchitsu(II/15)
rCF 1.316 0.011 1 3 1987Kuchitsu(II/15) C1-F3 assumed = C1-F4
rCF 1.342 0.024 2 5 1987Kuchitsu(II/15)
rCH 1.100 0.010 2 6 1987Kuchitsu(II/15)
aCCF 123.1 1.5 2 1 4 1987Kuchitsu(II/15)
aCCF 124 0.6 2 1 3 1987Kuchitsu(II/15)
aFCF 112 1.8 3 1 4 1987Kuchitsu(II/15)
aCCF 120 0.7 1 2 5 1987Kuchitsu(II/15)
aHCC 124 1.7 1 2 6 1987Kuchitsu(II/15)
aHCF 116 1.4 5 2 6 1987Kuchitsu(II/15)

These cartesians were determined using some assumed coordinate values. Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0000 0.4436 0.0000
C2 -0.7139 -0.6916 0.0000
F3 1.3153 0.4857 0.0000
F4 -0.5506 1.6388 0.0000
F5 -0.0873 -1.8784 0.0000
H6 -1.8133 -0.7269 0.0000

Atom - Atom Distances bond lengths
Distances in Å
  C1 C2 F3 F4 F5 H6
C1   1.34101.31601.31602.32352.1582
C2 1.3410   2.34602.33621.34201.1000
F3 1.31602.3460   2.19352.74883.3554
F4 1.31602.33622.1935   3.54762.6816
F5 2.32351.34202.74883.5476   2.0749
H6 2.15821.10003.35542.68162.0749  

Calculated geometries for C2HF3 (Trifluoroethylene).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 C2 F5 120.000 C1 C2 H6 124.000
C2 C1 F3 124.000 C2 C1 F4 123.100
F3 C1 F4 112.900 F5 C2 H6 116.000

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
C-F 3
H-C 1

Connectivity
Atom 1 Atom 2
C1 C2
C1 F3
C1 F4
C2 F5
C2 H6
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
10.140       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 1A' Cs True       1.400 NSRDS-NBS10 MW 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 C2HF3 (Trifluoroethylene).
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 2.700 -3.500 0.800 1971Fly/Ben:225 Qxx=-3.5+-0.4, Qyy=2.7+-0.4, Qzz=0.8+-0.5 Cs 2 3

Calculated electric quadrupole moments for C2HF3 (Trifluoroethylene).

References
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squib reference DOI
1971Fly/Ben:225 WH Flygare, RC Benson "The molecular Zeeman effect in diamagnetic molecules and the determination of molecular magnetic moments (g values), magnetic susceptibilities, and molecular quadrupole moments" Mol. Phys. 1971, 20 (2), 225-250 10.1080/00268977100100221
1987Kuchitsu(II/15) Kuchitsu (ed.), Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 15: Structure Data of Free Polyatomic Molecules. Springer-Verlag, Berlin, 1987.  
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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