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

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-275.721738
Energy at 298.15K-275.724194
HF Energy-275.721738
Nuclear repulsion energy112.312423
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 HF/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 Ag 3458 3107 0.00      
2 Ag 1955 1756 0.00      
3 Ag 1428 1283 0.00      
4 Ag 1262 1134 0.00      
5 Ag 603 542 0.00      
6 Au 1044 938 61.91      
7 Au 378 340 10.58      
8 Bg 947 851 0.00      
9 Bu 3448 3098 11.81      
10 Bu 1428 1283 40.74      
11 Bu 1280 1150 344.28      
12 Bu 346 311 16.63      

Unscaled Zero Point Vibrational Energy (zpe) 8788.8 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 7896.8 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 HF/6-31G*
ABC
1.97059 0.13704 0.12813

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.328 0.565 0.000
C2 0.328 -0.565 0.000
F3 0.328 1.720 0.000
F4 -0.328 -1.720 0.000
H5 -1.394 0.661 0.000
H6 1.394 -0.661 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.30651.32872.28501.07032.1138
C21.30652.28501.32872.11381.0703
F31.32872.28503.50242.02222.6085
F42.28501.32873.50242.60852.0222
H51.07032.11382.02222.60853.0855
H62.11381.07032.60852.02223.0855

picture of Ethene, 1,2-difluoro-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 120.242 C1 C2 H6 125.289
C2 C1 F3 120.242 C2 C1 H5 125.289
F3 C1 H5 114.469 F4 C2 H6 114.469
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.151      
2 C 0.151      
3 F -0.360      
4 F -0.360      
5 H 0.210      
6 H 0.210      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.543 -2.658 0.000
y -2.658 -25.797 0.000
z 0.000 0.000 -21.960
Traceless
 xyz
x 5.335 -2.658 0.000
y -2.658 -5.545 0.000
z 0.000 0.000 0.210
Polar
3z2-r20.420
x2-y27.254
xy-2.658
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.146 -0.670 0.000
y -0.670 4.195 0.000
z 0.000 0.000 1.611


<r2> (average value of r2) Å2
<r2> 78.885
(<r2>)1/2 8.882