return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CFClCClF (trans-1,2-dichloro-1,2-difluoroethylene)

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-1196.244503
Energy at 298.15K-1196.245042
HF Energy-1196.244503
Nuclear repulsion energy351.574777
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 B1B95/6-31G*
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 1823 1731 0.00      
2 Ag 1252 1188 0.00      
3 Ag 656 623 0.00      
4 Ag 432 411 0.00      
5 Ag 288 273 0.00      
6 Au 374 355 1.29      
7 Au 138 131 0.11      
8 Bg 555 527 0.00      
9 Bu 1293 1228 305.59      
10 Bu 905 859 195.70      
11 Bu 428 407 2.27      
12 Bu 166 157 2.39      

Unscaled Zero Point Vibrational Energy (zpe) 4155.6 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 3944.9 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 B1B95/6-31G*
ABC
0.14355 0.05074 0.03749

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.065 0.662 0.000
C2 0.065 -0.662 0.000
F3 -1.256 1.235 0.000
F4 1.256 -1.235 0.000
Cl5 1.256 1.736 0.000
Cl6 -1.256 -1.736 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.32961.32142.31151.70312.6773
C21.32962.31151.32142.67731.7031
F31.32142.31153.52292.56112.9717
F42.31151.32143.52292.97172.5611
Cl51.70312.67732.56112.97174.2859
Cl62.67731.70312.97172.56114.2859

picture of trans-1,2-dichloro-1,2-difluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 121.366 C1 C2 Cl6 123.493
C2 C1 F3 121.366 C2 C1 Cl5 123.493
F3 C1 Cl5 115.141 F4 C2 Cl6 115.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.154      
2 C 0.154      
3 F -0.227      
4 F -0.227      
5 Cl 0.073      
6 Cl 0.073      


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 -44.880 1.828 0.000
y 1.828 -44.875 0.000
z 0.000 0.000 -44.698
Traceless
 xyz
x -0.093 1.828 0.000
y 1.828 -0.087 0.000
z 0.000 0.000 0.180
Polar
3z2-r20.360
x2-y2-0.004
xy1.828
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.645 2.175 0.000
y 2.175 8.628 0.000
z 0.000 0.000 3.063


<r2> (average value of r2) Å2
<r2> 245.282
(<r2>)1/2 15.661