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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-276.756537
Energy at 298.15K-276.758826
Nuclear repulsion energy112.632224
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 PBEPBE/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 3168 3125 13.65      
2 A1 1733 1709 47.33      
3 A1 1259 1242 30.84      
4 A1 1011 997 50.49      
5 A1 216 213 1.75      
6 A2 791 780 0.00      
7 A2 481 474 0.00      
8 B1 756 746 34.21      
9 B2 3144 3101 0.42      
10 B2 1372 1353 30.54      
11 B2 1136 1121 98.55      
12 B2 750 740 23.92      

Unscaled Zero Point Vibrational Energy (zpe) 7908.6 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 7800.2 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 PBEPBE/6-31G**
ABC
0.70271 0.19082 0.15007

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.580
C2 0.000 -0.669 0.580
F3 0.000 1.400 -0.553
F4 0.000 -1.400 -0.553
H5 0.000 1.253 1.503
H6 0.000 -1.253 1.503

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.33841.34802.35871.09272.1329
C21.33842.35871.34802.13291.0927
F31.34802.35872.79922.06153.3567
F42.35871.34802.79923.35672.0615
H51.09272.13292.06153.35672.5069
H62.13291.09273.35672.06152.5069

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 122.809 C1 C2 H6 122.323
C2 C1 F3 122.809 C2 C1 H5 122.323
F3 C1 H5 114.868 F4 C2 H6 114.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.114      
2 C 0.114      
3 F -0.230      
4 F -0.230      
5 H 0.116      
6 H 0.116      


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 1.927 1.927
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.926 0.000 0.000
y 0.000 -21.388 0.000
z 0.000 0.000 -19.228
Traceless
 xyz
x -1.618 0.000 0.000
y 0.000 -0.810 0.000
z 0.000 0.000 2.428
Polar
3z2-r24.857
x2-y2-0.538
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.737 0.000 0.000
y 0.000 4.766 0.000
z 0.000 0.000 3.326


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