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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-276.941365
Energy at 298.15K-276.943744
Nuclear repulsion energy113.545914
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
4/u)
Dep P Dep U
1 A1 3257 3122 11.52      
2 A1 1802 1727 47.18      
3 A1 1301 1247 34.66      
4 A1 1046 1003 56.89      
5 A1 226 217 2.10      
6 A2 854 819 0.00      
7 A2 502 481 0.00      
8 B1 793 760 34.13      
9 B2 3233 3098 0.81      
10 B2 1420 1361 35.16      
11 B2 1172 1124 109.30      
12 B2 776 743 27.20      

Unscaled Zero Point Vibrational Energy (zpe) 8190.9 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 7850.1 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
0.71364 0.19404 0.15256

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 1.388 -0.549
F4 0.000 -1.388 -0.549
H5 0.000 1.245 1.490
H6 0.000 -1.245 1.490

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.32681.33772.33931.08402.1163
C21.32682.33931.33772.11631.0840
F31.33772.33932.77582.04433.3303
F42.33931.33772.77583.33032.0443
H51.08402.11632.04433.33032.4899
H62.11631.08403.33032.04432.4899

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 122.794 C1 C2 H6 122.448
C2 C1 F3 122.794 C2 C1 H5 122.448
F3 C1 H5 114.759 F4 C2 H6 114.759
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 0.128      
2 C 0.128      
3 F -0.263      
4 F -0.263      
5 H 0.135      
6 H 0.135      


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 2.162 2.162
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.821 0.000 0.000
y 0.000 -21.458 0.000
z 0.000 0.000 -19.115
Traceless
 xyz
x -1.535 0.000 0.000
y 0.000 -0.989 0.000
z 0.000 0.000 2.524
Polar
3z2-r25.049
x2-y2-0.364
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.714 0.000 0.000
y 0.000 4.645 0.000
z 0.000 0.000 3.158


<r2> (average value of r2) Å2
<r2> 69.885
(<r2>)1/2 8.360