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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-276.783437
Energy at 298.15K-276.785818
Nuclear repulsion energy113.772488
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 HSEh1PBE/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 3279 3118 12.18      
2 A1 1819 1730 47.58      
3 A1 1307 1243 35.53      
4 A1 1058 1006 57.43      
5 A1 225 214 2.12      
6 A2 861 819 0.00      
7 A2 505 480 0.00      
8 B1 800 761 34.42      
9 B2 3254 3095 0.48      
10 B2 1431 1361 38.87      
11 B2 1180 1122 108.01      
12 B2 780 742 27.17      

Unscaled Zero Point Vibrational Energy (zpe) 8249.1 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 7844.9 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 HSEh1PBE/6-31G*
ABC
0.71536 0.19511 0.15330

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 1.384 -0.548
F4 0.000 -1.384 -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
C11.32501.33482.33411.08402.1162
C21.32502.33411.33482.11621.0840
F31.33482.33412.76712.04103.3263
F42.33411.33482.76713.32632.0410
H51.08402.11622.04103.32632.4931
H62.11621.08403.32632.04102.4931

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 122.698 C1 C2 H6 122.603
C2 C1 F3 122.698 C2 C1 H5 122.603
F3 C1 H5 114.699 F4 C2 H6 114.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.085      
2 C 0.085      
3 F -0.261      
4 F -0.261      
5 H 0.176      
6 H 0.176      


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 2.173 2.173
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.888 0.000 0.000
y 0.000 -21.453 0.000
z 0.000 0.000 -19.138
Traceless
 xyz
x -1.592 0.000 0.000
y 0.000 -0.940 0.000
z 0.000 0.000 2.532
Polar
3z2-r25.065
x2-y2-0.435
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.691 0.000 0.000
y 0.000 4.596 0.000
z 0.000 0.000 3.115


<r2> (average value of r2) Å2
<r2> 69.646
(<r2>)1/2 8.345