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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-1195.636694
Energy at 298.15K-1195.640266
HF Energy-1194.720138
Nuclear repulsion energy376.951358
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 3200 3013 0.79      
2 A 1453 1368 7.29      
3 A 1359 1279 30.86      
4 A 1176 1107 109.87      
5 A 1119 1054 125.10      
6 A 873 822 73.72      
7 A 470 443 0.71      
8 A 321 302 1.30      
9 A 168 158 0.70      
10 A 85 80 0.64      
11 B 3211 3023 17.15      
12 B 1392 1311 8.80      
13 B 1288 1212 32.75      
14 B 1133 1067 19.53      
15 B 864 813 106.81      
16 B 441 415 11.96      
17 B 396 373 8.85      
18 B 344 324 12.79      

Unscaled Zero Point Vibrational Energy (zpe) 9646.3 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9081.0 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
0.09824 0.06011 0.03872

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 -0.229 0.727 0.388
C2 0.229 -0.727 0.388
H3 -1.314 0.796 0.357
H4 1.314 -0.796 0.357
F5 0.229 1.281 1.556
F6 -0.229 -1.281 1.556
Cl7 0.443 1.621 -0.982
Cl8 -0.443 -1.621 -0.982

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52371.08752.16771.37092.32201.76892.7265
C21.52372.16771.08752.32201.37092.72651.7689
H31.08752.16773.07212.01312.63172.35812.8965
H42.16771.08753.07212.63172.01312.89652.3581
F51.37092.32202.01312.63172.60182.56933.9127
F62.32201.37092.63172.01312.60183.91272.5693
Cl71.76892.72652.35812.89652.56933.91273.3605
Cl82.72651.76892.89652.35813.91272.56933.3605

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 111.131 C1 C2 F6 106.560
C1 C2 Cl8 111.581 C2 C1 H3 111.131
C2 C1 F5 106.560 C2 C1 Cl7 111.581
H3 C1 F5 109.401 H3 C1 Cl7 108.940
H4 C2 F6 109.401 H4 C2 Cl8 108.940
F5 C1 Cl7 109.173 F6 C2 Cl8 109.173
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability