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 CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

using model chemistry: M06-2X/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at M06-2X/6-31G
 hartrees
Energy at 0K-1197.198307
Energy at 298.15K-1197.201675
HF Energy-1197.198307
Nuclear repulsion energy370.426206
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 M06-2X/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 A 3219 3219 0.56      
2 A 1425 1425 3.92      
3 A 1314 1314 15.23      
4 A 1174 1174 62.54      
5 A 1095 1095 139.93      
6 A 809 809 74.31      
7 A 441 441 2.03      
8 A 301 301 1.91      
9 A 160 160 1.15      
10 A 72 72 1.22      
11 B 3231 3231 1.33      
12 B 1352 1352 7.35      
13 B 1259 1259 23.82      
14 B 1106 1106 15.05      
15 B 799 799 112.48      
16 B 413 413 19.37      
17 B 373 373 10.69      
18 B 330 330 17.74      

Unscaled Zero Point Vibrational Energy (zpe) 9434.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9434.1 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 M06-2X/6-31G
ABC
0.09359 0.05886 0.03750

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.243 0.716 0.417
C2 0.243 -0.716 0.417
H3 -1.326 0.792 0.390
H4 1.326 -0.792 0.390
F5 0.243 1.306 1.587
F6 -0.243 -1.306 1.587
Cl7 0.440 1.637 -1.011
Cl8 -0.440 -1.637 -1.011

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.51151.08672.17611.39712.33541.83102.7591
C21.51152.17611.08672.33541.39712.75911.8310
H31.08672.17613.08952.03932.64742.40662.9405
H42.17611.08673.08952.64742.03932.94052.4066
F51.39712.33542.03932.64742.65572.62633.9839
F62.33541.39712.64742.03932.65573.98392.6263
Cl71.83102.75912.40662.94052.62633.98393.3896
Cl82.75911.83102.94052.40663.98392.62633.3896

picture of 1,2-dichloro-1,2-difluoroethane RR state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 112.743 C1 C2 F6 106.759
C1 C2 Cl8 110.907 C2 C1 H3 112.743
C2 C1 F5 106.759 C2 C1 Cl7 110.907
H3 C1 F5 109.756 H3 C1 Cl7 108.432
H4 C2 F6 109.756 H4 C2 Cl8 108.432
F5 C1 Cl7 108.143 F6 C2 Cl8 108.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.031      
2 C -0.031      
3 H 0.257      
4 H 0.257      
5 F -0.304      
6 F -0.304      
7 Cl 0.078      
8 Cl 0.078      


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 -0.491 0.491
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.422 -3.216 0.000
y -3.216 -51.800 0.000
z 0.000 0.000 -52.300
Traceless
 xyz
x 7.628 -3.216 0.000
y -3.216 -3.439 0.000
z 0.000 0.000 -4.189
Polar
3z2-r2-8.378
x2-y27.378
xy-3.216
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.318 0.950 0.000
y 0.950 5.740 0.000
z 0.000 0.000 6.863


<r2> (average value of r2) Å2
<r2> 254.409
(<r2>)1/2 15.950