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All results from a given calculation for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-277.080925
Energy at 298.15K-277.083342
Nuclear repulsion energy114.170338
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B1B95/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3249 3110 8.07      
2 A1 1791 1714 57.18      
3 A1 1288 1232 39.10      
4 A1 1039 994 60.17      
5 A1 231 221 2.10      
6 A2 874 837 0.00      
7 A2 521 499 0.00      
8 B1 784 750 42.02      
9 B2 3225 3087 3.23      
10 B2 1400 1340 37.30      
11 B2 1162 1112 123.38      
12 B2 781 747 29.27      

Unscaled Zero Point Vibrational Energy (zpe) 8172.1 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 7821.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B1B95/cc-pVTZ
ABC
0.72073 0.19632 0.15429

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.659 0.572
C2 0.000 -0.659 0.572
F3 0.000 1.380 -0.546
F4 0.000 -1.380 -0.546
H5 0.000 1.237 1.483
H6 0.000 -1.237 1.483

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.31831.33092.32591.07872.1038
C21.31832.32591.33092.10381.0787
F31.33092.32592.75992.03453.3120
F42.32591.33092.75993.31202.0345
H51.07872.10382.03453.31202.4748
H62.10381.07873.31202.03452.4748

picture of Ethene, 1,2-difluoro-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 122.789 C1 C2 H6 122.414
C2 C1 F3 122.789 C2 C1 H5 122.414
F3 C1 H5 114.797 F4 C2 H6 114.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.032      
2 C 0.032      
3 F -0.156      
4 F -0.156      
5 H 0.124      
6 H 0.124      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.233 2.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.284 0.000 0.000
y 0.000 -21.877 0.000
z 0.000 0.000 -19.631
Traceless
 xyz
x -1.530 0.000 0.000
y 0.000 -0.920 0.000
z 0.000 0.000 2.450
Polar
3z2-r24.900
x2-y2-0.406
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.396 0.000 0.000
y 0.000 4.934 0.000
z 0.000 0.000 3.516


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000