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All results from a given calculation for CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-1195.122227
Energy at 298.15K-1195.125476
HF Energy-1194.573930
Nuclear repulsion energy363.814126
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 QCISD/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 3172 3056 0.74      
2 A 1407 1356 0.77      
3 A 1300 1253 22.09      
4 A 1141 1100 23.16      
5 A 1032 995 136.17      
6 A 775 747 68.45      
7 A 416 400 1.86      
8 A 296 285 1.91      
9 A 157 151 1.31      
10 A 75 72 1.06      
11 B 3183 3067 2.86      
12 B 1333 1284 6.88      
13 B 1254 1209 27.14      
14 B 1033 995 9.72      
15 B 758 731 102.33      
16 B 401 386 18.69      
17 B 358 345 13.12      
18 B 321 309 15.26      

Unscaled Zero Point Vibrational Energy (zpe) 9205.6 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 8870.5 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 QCISD/6-31G
ABC
0.09079 0.05641 0.03607

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.248 0.721 0.421
C2 0.248 -0.721 0.421
H3 -1.336 0.804 0.398
H4 1.336 -0.804 0.398
F5 0.248 1.326 1.613
F6 -0.248 -1.326 1.613
Cl7 0.440 1.680 -1.026
Cl8 -0.440 -1.680 -1.026

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52411.09212.19901.42622.36851.86732.8094
C21.52412.19901.09212.36851.42622.80941.8673
H31.09212.19903.11952.06392.68312.43943.0002
H42.19901.09213.11952.68312.06393.00022.4394
F51.42622.36852.06392.68312.69742.67004.0588
F62.36851.42622.68312.06392.69744.05882.6700
Cl71.86732.80942.43943.00022.67004.05883.4732
Cl82.80941.86733.00022.43944.05882.67003.4732

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 113.360 C1 C2 F6 106.749
C1 C2 Cl8 111.468 C2 C1 H3 113.360
C2 C1 F5 106.749 C2 C1 Cl7 111.468
H3 C1 F5 109.364 H3 C1 Cl7 108.161
H4 C2 F6 109.364 H4 C2 Cl8 108.161
F5 C1 Cl7 107.573 F6 C2 Cl8 107.573
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability