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: B2PLYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B2PLYP/TZVP
 hartrees
Energy at 0K-1195.866624
Energy at 298.15K-1195.867163
HF Energy-1195.551731
Nuclear repulsion energy349.263330
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 B2PLYP/TZVP
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 1766 1686 0.00      
2 Ag 1191 1137 0.00      
3 Ag 642 613 0.00      
4 Ag 427 408 0.00      
5 Ag 293 280 0.00      
6 Au 360 343 0.57      
7 Au 133 127 0.39      
8 Bg 540 515 0.00      
9 Bu 1224 1168 327.16      
10 Bu 879 838 190.65      
11 Bu 429 410 2.76      
12 Bu 180 172 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 4031.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 3847.5 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 B2PLYP/TZVP
ABC
0.14263 0.04987 0.03695

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.064 0.662 0.000
C2 0.064 -0.662 0.000
F3 -1.262 1.239 0.000
F4 1.262 -1.239 0.000
Cl5 1.262 1.755 0.000
Cl6 -1.262 -1.755 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.32941.32942.31711.71872.6972
C21.32942.31711.32942.69721.7187
F31.32942.31713.53642.57592.9938
F42.31711.32943.53642.99382.5759
Cl51.71872.69722.57592.99384.3233
Cl62.69721.71872.99382.57594.3233

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 121.266 C1 C2 Cl6 123.977
C2 C1 F3 121.266 C2 C1 Cl5 123.977
F3 C1 Cl5 114.757 F4 C2 Cl6 114.757
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.143      
2 C 0.143      
3 F -0.142      
4 F -0.142      
5 Cl -0.001      
6 Cl -0.001      


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 -46.517 2.835 0.000
y 2.835 -46.022 0.000
z 0.000 0.000 -45.645
Traceless
 xyz
x -0.684 2.835 0.000
y 2.835 0.059 0.000
z 0.000 0.000 0.625
Polar
3z2-r21.250
x2-y2-0.495
xy2.835
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.200 2.085 0.000
y 2.085 8.971 0.000
z 0.000 0.000 3.894


<r2> (average value of r2) Å2
<r2> 249.217
(<r2>)1/2 15.787