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Experimental data for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

22 02 02 11 45
Other names
trans-1,2-dichloro-1,2-difluoroethene; 1,2-dichloro-1,2-difluoroethene (E);
INChI INChIKey SMILES IUPAC name
InChI=1S/C2Cl2F2/c3-1(5)2(4)6/b2-1+ UPVJEODAZWTJKZ-OWOJBTEDSA-N F/C(Cl)=C(Cl)/F
State Conformation
1AG C2H
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 18.19   kJ mol-1 TRC
Hfg(0K) enthalpy of formation     kJ mol-1 TRC
Entropy (298.15K) entropy 328.00   J K-1 mol-1 TRC
Heat Capacity (298.15K) heat capacity 88.04   J K-1 mol-1 TRC
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 Ag 1707   webbook      
2 Ag 1186          
3 Ag 632          
4 Ag 425          
5 Ag 288          
6 Au 333          
7 Au 140          
8 Bg 529          
9 Bu 1190          
10 Bu 892          
11 Bu 426          
12 Bu 175          

vibrational zero-point energy: 3961.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene).
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 CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of trans-1,2-dichloro-1,2-difluoroethylene

Point Group C2h


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 CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene).

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 2
C-Cl 2

Connectivity
Atom 1 Atom 2
C1 C2
C1 F3
C1 Cl5
C2 F4
C2 Cl6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1AG
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 1AG C2h True           C2h 0 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 CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene).
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 1AG C2h True       C2h 0 3

Calculated electric quadrupole moments for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene).

References
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squib reference DOI
TRC Frenkel, M; Marsh, K.N.; Wilhoit, R.C.; Kabo, G.J.; Roganov, G.N.,Thermodynamics of Organic Compounds in the Gas State,Thermodynamics Research Center, College Station, TX, 1994  
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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