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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-276.938044
Energy at 298.15K-276.940414
Nuclear repulsion energy113.512118
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3263 3122 13.13      
2 A1 1803 1725 46.82      
3 A1 1303 1247 34.15      
4 A1 1047 1002 57.39      
5 A1 226 216 2.09      
6 A2 852 815 0.00      
7 A2 501 479 0.00      
8 B1 793 759 34.73      
9 B2 3239 3099 0.31      
10 B2 1426 1364 36.45      
11 B2 1172 1121 108.75      
12 B2 776 742 27.27      

Unscaled Zero Point Vibrational Energy (zpe) 8200.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 7845.1 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 B3PW91/6-31G*
ABC
0.71484 0.19363 0.15236

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.663 0.575
C2 0.000 -0.663 0.575
F3 0.000 1.389 -0.549
F4 0.000 -1.389 -0.549
H5 0.000 1.247 1.489
H6 0.000 -1.247 1.489

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.32701.33772.34031.08442.1180
C21.32702.34031.33772.11801.0844
F31.33772.34032.77902.04253.3322
F42.34031.33772.77903.33222.0425
H51.08442.11802.04253.33222.4942
H62.11801.08443.33222.04252.4942

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 122.869 C1 C2 H6 122.559
C2 C1 F3 122.869 C2 C1 H5 122.559
F3 C1 H5 114.572 F4 C2 H6 114.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.085      
2 C 0.085      
3 F -0.260      
4 F -0.260      
5 H 0.175      
6 H 0.175      


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 2.172 2.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.849 0.000 0.000
y 0.000 -21.445 0.000
z 0.000 0.000 -19.106
Traceless
 xyz
x -1.573 0.000 0.000
y 0.000 -0.968 0.000
z 0.000 0.000 2.541
Polar
3z2-r25.082
x2-y2-0.404
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.693 0.000 0.000
y 0.000 4.619 0.000
z 0.000 0.000 3.134


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