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

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-277.053528
Energy at 298.15K-277.055944
Nuclear repulsion energy113.903656
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/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 3236 3112 7.67      
2 A1 1778 1709 56.34      
3 A1 1288 1238 37.99      
4 A1 1032 992 60.13      
5 A1 234 225 2.04      
6 A2 870 837 0.00      
7 A2 520 500 0.00      
8 B1 781 751 43.84      
9 B2 3212 3089 3.29      
10 B2 1398 1344 34.22      
11 B2 1156 1112 126.27      
12 B2 781 751 29.55      

Unscaled Zero Point Vibrational Energy (zpe) 8142.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 7830.0 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/cc-pVTZ
ABC
0.72001 0.19489 0.15337

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 0.572
C2 0.000 -0.661 0.572
F3 0.000 1.385 -0.547
F4 0.000 -1.385 -0.547
H5 0.000 1.239 1.486
H6 0.000 -1.239 1.486

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.32121.33332.33201.08122.1077
C21.32122.33201.33332.10771.0812
F31.33332.33202.77092.03793.3194
F42.33201.33332.77093.31942.0379
H51.08122.10772.03793.31942.4776
H62.10771.08123.31942.03792.4776

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 122.933 C1 C2 H6 122.331
C2 C1 F3 122.933 C2 C1 H5 122.331
F3 C1 H5 114.735 F4 C2 H6 114.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.056      
2 C 0.056      
3 F -0.159      
4 F -0.159      
5 H 0.103      
6 H 0.103      


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 2.210 2.210
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.326 0.000 0.000
y 0.000 -21.882 0.000
z 0.000 0.000 -19.629
Traceless
 xyz
x -1.570 0.000 0.000
y 0.000 -0.904 0.000
z 0.000 0.000 2.474
Polar
3z2-r24.948
x2-y2-0.444
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.415 0.000 0.000
y 0.000 4.969 0.000
z 0.000 0.000 3.527


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