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: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-1190.308855
Energy at 298.15K-1190.309245
HF Energy-1190.308855
Nuclear repulsion energy341.460750
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 B3LYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 1826 1762 0.00      
2 Ag 1166 1125 0.00      
3 Ag 615 593 0.00      
4 Ag 388 375 0.00      
5 Ag 270 261 0.00      
6 Au 363 350 1.49      
7 Au 133 128 0.00      
8 Bg 586 565 0.00      
9 Bu 1275 1230 210.04      
10 Bu 778 751 177.30      
11 Bu 385 371 0.49      
12 Bu 166 160 4.33      

Unscaled Zero Point Vibrational Energy (zpe) 3975.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 3835.9 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 B3LYP/3-21G
ABC
0.13448 0.04824 0.03551

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.101 0.651 0.000
C2 0.101 -0.651 0.000
F3 -1.313 1.236 0.000
F4 1.313 -1.236 0.000
Cl5 1.313 1.775 0.000
Cl6 -1.313 -1.775 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.31811.34572.35811.80592.7118
C21.31812.35811.34572.71181.8059
F31.34572.35813.60632.68093.0103
F42.35811.34573.60633.01032.6809
Cl51.80592.71182.68093.01034.4151
Cl62.71181.80593.01032.68094.4151

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 124.554 C1 C2 Cl6 119.651
C2 C1 F3 124.554 C2 C1 Cl5 119.651
F3 C1 Cl5 115.795 F4 C2 Cl6 115.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.069      
2 C 0.069      
3 F -0.217      
4 F -0.217      
5 Cl 0.148      
6 Cl 0.148      


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 -46.991 0.580 0.000
y 0.580 -47.377 0.000
z 0.000 0.000 -45.778
Traceless
 xyz
x -0.413 0.580 0.000
y 0.580 -0.993 0.000
z 0.000 0.000 1.406
Polar
3z2-r22.812
x2-y20.386
xy0.580
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.615 2.578 0.000
y 2.578 8.039 0.000
z 0.000 0.000 1.816


<r2> (average value of r2) Å2
<r2> 258.605
(<r2>)1/2 16.081