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 CHFClCHClF (ethane, 1,2-dichloro-1,2-difluoro-)

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 CI 1AG
Energy calculated at B2PLYP=FULL/6-311G**
 hartrees
Energy at 0K-1197.125265
Energy at 298.15K-1197.128753
HF Energy-1196.758529
Nuclear repulsion energy375.017834
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 Ag 3160 3160 0.00      
2 Ag 1422 1422 0.00      
3 Ag 1341 1341 0.00      
4 Ag 1134 1134 0.00      
5 Ag 1088 1088 0.00      
6 Ag 833 833 0.00      
7 Ag 521 521 0.00      
8 Ag 376 376 0.00      
9 Ag 273 273 0.00      
10 Au 3171 3171 13.01      
11 Au 1347 1347 25.13      
12 Au 1260 1260 43.31      
13 Au 1125 1125 267.00      
14 Au 775 775 236.73      
15 Au 405 405 2.71      
16 Au 374 374 30.23      
17 Au 175 175 1.52      
18 Au 74 74 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 9426.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9426.6 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
0.13419 0.04882 0.03697

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

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.762
C2 0.000 0.000 0.762
H3 1.013 0.000 -1.157
H4 -1.013 0.000 1.157
F5 -0.668 -1.098 -1.205
F6 0.668 1.098 1.205
Cl7 -0.824 1.465 -1.359
Cl8 0.824 -1.465 1.359

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52431.08722.16991.35962.35011.78372.7063
C21.52432.16991.08722.35011.35962.70631.7837
H31.08722.16993.07532.00872.62752.35852.9172
H42.16991.08723.07532.62752.00872.91722.3585
F51.35962.35012.00872.62753.52422.57252.9894
F62.35011.35962.62752.00873.52422.98942.5725
Cl71.78372.70632.35852.91722.57252.98944.3230
Cl82.70631.78372.91722.35852.98942.57254.3230

picture of ethane, 1,2-dichloro-1,2-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 111.278 C1 C2 F6 109.025
C1 C2 Cl8 109.538 C2 C1 H3 111.278
C2 C1 F5 109.025 C2 C1 Cl7 109.538
H3 C1 F5 109.861 H3 C1 Cl7 108.003
H4 C2 F6 109.861 H4 C2 Cl8 108.003
F5 C1 Cl7 109.103 F6 C2 Cl8 109.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability