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: B2PLYP=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP=FULL/6-311G**
 hartrees
Energy at 0K-1197.124176
Energy at 298.15K-1197.127687
HF Energy-1196.757304
Nuclear repulsion energy376.521729
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=FULL/6-311G**
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 3159 3159 0.49      
2 A 1423 1423 9.25      
3 A 1325 1325 14.08      
4 A 1136 1136 131.63      
5 A 1080 1080 144.65      
6 A 839 839 103.53      
7 A 460 460 1.81      
8 A 317 317 1.51      
9 A 169 169 0.77      
10 A 79 79 0.63      
11 B 3170 3170 12.74      
12 B 1371 1371 9.97      
13 B 1254 1254 36.75      
14 B 1089 1089 26.07      
15 B 827 827 114.64      
16 B 437 437 12.36      
17 B 392 392 8.10      
18 B 335 335 11.17      

Unscaled Zero Point Vibrational Energy (zpe) 9429.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9429.9 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=FULL/6-311G**
ABC
0.09777 0.06006 0.03866

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.225 0.729 0.399
C2 0.225 -0.729 0.399
H3 -1.308 0.811 0.356
H4 1.308 -0.811 0.356
F5 0.225 1.295 1.555
F6 -0.225 -1.295 1.555
Cl7 0.463 1.610 -0.985
Cl8 -0.463 -1.610 -0.985

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52591.08732.17311.36282.33051.77942.7290
C21.52592.17311.08732.33051.36282.72901.7794
H31.08732.17313.07782.00532.65442.36062.8940
H42.17311.08733.07782.65442.00532.89402.3606
F51.36282.33052.00532.65442.62772.57113.9198
F62.33051.36282.65442.00532.62773.91982.5711
Cl71.77942.72902.36062.89402.57113.91983.3511
Cl82.72901.77942.89402.36063.91982.57113.3511

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 111.415 C1 C2 F6 107.428
C1 C2 Cl8 111.077 C2 C1 H3 111.415
C2 C1 F5 107.428 C2 C1 Cl7 111.077
H3 C1 F5 109.347 H3 C1 Cl7 108.436
H4 C2 F6 109.347 H4 C2 Cl8 108.436
F5 C1 Cl7 109.101 F6 C2 Cl8 109.101
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability