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: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-1196.375917
Energy at 298.15K-1196.376488
HF Energy-1196.375917
Nuclear repulsion energy352.174136
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 B1B95/6-311G*
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 1809 1734 0.00      
2 Ag 1224 1173 0.00      
3 Ag 655 628 0.00      
4 Ag 433 415 0.00      
5 Ag 289 277 0.00      
6 Au 374 359 0.74      
7 Au 138 132 0.29      
8 Bg 571 548 0.00      
9 Bu 1262 1210 347.17      
10 Bu 899 862 209.94      
11 Bu 432 414 2.55      
12 Bu 167 161 2.61      

Unscaled Zero Point Vibrational Energy (zpe) 4126.8 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 3955.9 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 B1B95/6-311G*
ABC
0.14403 0.05091 0.03761

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.066 0.660 0.000
C2 0.066 -0.660 0.000
F3 -1.253 1.235 0.000
F4 1.253 -1.235 0.000
Cl5 1.253 1.734 0.000
Cl6 -1.253 -1.734 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.32601.31922.30841.70072.6719
C21.32602.30841.31922.67191.7007
F31.31922.30843.51842.55492.9689
F42.30841.31923.51842.96892.5549
Cl51.70072.67192.55492.96894.2784
Cl62.67191.70072.96892.55494.2784

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 121.538 C1 C2 Cl6 123.480
C2 C1 F3 121.538 C2 C1 Cl5 123.480
F3 C1 Cl5 114.982 F4 C2 Cl6 114.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.138      
2 C 0.138      
3 F -0.162      
4 F -0.162      
5 Cl 0.024      
6 Cl 0.024      


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 -45.775 2.261 0.000
y 2.261 -45.892 0.000
z 0.000 0.000 -45.565
Traceless
 xyz
x -0.046 2.261 0.000
y 2.261 -0.222 0.000
z 0.000 0.000 0.268
Polar
3z2-r20.536
x2-y20.117
xy2.261
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.874 2.448 0.000
y 2.448 8.736 0.000
z 0.000 0.000 2.918


<r2> (average value of r2) Å2
<r2> 245.140
(<r2>)1/2 15.657