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 CF2ClCF2Cl (1,2-Dichloro-1,1,2,2-tetrafluoroethane)

using model chemistry: HF/CEP-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/CEP-31G*
 hartrees
Energy at 0K-135.802503
Energy at 298.15K-135.804976
HF Energy-135.802503
Nuclear repulsion energy242.255158
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/CEP-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 1455 1306 0.00      
2 Ag 1208 1085 0.00      
3 Ag 768 689 0.00      
4 Ag 485 435 0.00      
5 Ag 389 349 0.00      
6 Ag 271 244 0.00      
7 Au 1373 1233 498.25      
8 Au 405 364 1.29      
9 Au 241 217 2.61      
10 Au 73 66 0.30      
11 Bg 1369 1229 0.00      
12 Bg 588 528 0.00      
13 Bg 351 315 0.00      
14 Bu 1281 1151 481.27      
15 Bu 937 841 416.44      
16 Bu 660 593 20.27      
17 Bu 475 426 4.46      
18 Bu 179 161 1.52      

Unscaled Zero Point Vibrational Energy (zpe) 6253.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 5615.7 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/CEP-31G*
ABC
0.07502 0.03849 0.03457

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.239 0.744 0.000
C2 0.239 -0.744 0.000
Cl3 -1.999 0.847 0.000
Cl4 1.999 -0.847 0.000
F5 0.239 1.351 1.074
F6 0.239 1.351 -1.074
F7 -0.239 -1.351 1.074
F8 -0.239 -1.351 -1.074

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 F5 F6 F7 F8
C11.56351.76382.74631.32231.32232.35482.3548
C21.56352.74631.76382.35482.35481.32231.3223
Cl31.76382.74634.34312.53272.53273.01463.0146
Cl42.74631.76384.34313.01463.01462.53272.5327
F51.32232.35482.53273.01462.14712.74463.4846
F61.32232.35482.53273.01462.14713.48462.7446
F72.35481.32233.01462.53272.74463.48462.1471
F82.35481.32233.01462.53273.48462.74462.1471

picture of 1,2-Dichloro-1,1,2,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 111.116 C1 C2 F7 109.088
C1 C2 F8 109.088 C2 C1 Cl3 111.116
C2 C1 F5 109.088 C2 C1 F6 109.088
Cl3 C1 F5 109.473 Cl3 C1 F6 109.473
Cl4 C2 F7 109.473 Cl4 C2 F8 109.473
F5 C1 F6 108.558 F7 C2 F8 108.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.386      
2 C 0.386      
3 Cl -0.053      
4 Cl -0.053      
5 F -0.167      
6 F -0.167      
7 F -0.167      
8 F -0.167      


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 -52.450 -1.058 0.000
y -1.058 -56.841 0.000
z 0.000 0.000 -57.035
Traceless
 xyz
x 4.488 -1.058 0.000
y -1.058 -2.099 0.000
z 0.000 0.000 -2.389
Polar
3z2-r2-4.778
x2-y24.391
xy-1.058
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.657 -0.635 0.000
y -0.635 4.852 0.000
z 0.000 0.000 4.366


<r2> (average value of r2) Å2
<r2> 190.535
(<r2>)1/2 13.803