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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-276.759258
Energy at 298.15K-276.761642
HF Energy-276.759258
Nuclear repulsion energy113.802454
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 PBE1PBE/6-31G*
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 3280 3117 11.62      
2 A1 1821 1731 47.73      
3 A1 1308 1243 36.10      
4 A1 1060 1008 56.45      
5 A1 226 214 2.10      
6 A2 862 819 0.00      
7 A2 506 481 0.00      
8 B1 800 761 34.76      
9 B2 3255 3094 0.56      
10 B2 1433 1362 39.87      
11 B2 1184 1125 107.36      
12 B2 781 742 26.99      

Unscaled Zero Point Vibrational Energy (zpe) 8257.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 7847.1 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 PBE1PBE/6-31G*
ABC
0.71618 0.19514 0.15336

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.663 0.574
C2 0.000 -0.663 0.574
F3 0.000 1.383 -0.548
F4 0.000 -1.383 -0.548
H5 0.000 1.247 1.488
H6 0.000 -1.247 1.488

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.32531.33392.33371.08422.1166
C21.32532.33371.33392.11661.0842
F31.33392.33372.76682.04053.3260
F42.33371.33392.76683.32602.0405
H51.08422.11662.04053.32602.4933
H62.11661.08423.32602.04052.4933

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 122.705 C1 C2 H6 122.595
C2 C1 F3 122.705 C2 C1 H5 122.595
F3 C1 H5 114.700 F4 C2 H6 114.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.083      
2 C 0.083      
3 F -0.261      
4 F -0.261      
5 H 0.179      
6 H 0.179      


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 2.168 2.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.901 0.000 0.000
y 0.000 -21.439 0.000
z 0.000 0.000 -19.130
Traceless
 xyz
x -1.616 0.000 0.000
y 0.000 -0.924 0.000
z 0.000 0.000 2.540
Polar
3z2-r25.080
x2-y2-0.462
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 4.593 0.000
z 0.000 0.000 3.109


<r2> (average value of r2) Å2
<r2> 69.624
(<r2>)1/2 8.344