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=FULLultrafine/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=FULLultrafine/6-311G**
 hartrees
Energy at 0K-1197.125270
Energy at 298.15K 
HF Energy-1196.758534
Nuclear repulsion energy375.024652
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=FULLultrafine/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 3159 3159 0.00      
2 Ag 1423 1423 0.00      
3 Ag 1342 1342 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 3170 3170 13.01      
11 Au 1347 1347 25.24      
12 Au 1261 1261 43.29      
13 Au 1125 1125 266.96      
14 Au 775 775 236.58      
15 Au 405 405 2.70      
16 Au 374 374 30.23      
17 Au 175 175 1.51      
18 Au 74 74 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 9427.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9427.2 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=FULLultrafine/6-311G**
ABC
0.13420 0.04882 0.03697

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/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
C11.52431.08722.16991.35962.35011.78362.7063
C21.52432.16991.08722.35011.35962.70631.7836
H31.08722.16993.07532.00862.62752.35852.9172
H42.16991.08723.07532.62752.00862.91722.3585
F51.35962.35012.00862.62753.52412.57242.9894
F62.35011.35962.62752.00863.52412.98942.5724
Cl71.78362.70632.35852.91722.57242.98944.3229
Cl82.70631.78362.91722.35852.98942.57244.3229

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 111.279 C1 C2 F6 109.016
C1 C2 Cl8 109.548 C2 C1 H3 111.279
C2 C1 F5 109.016 C2 C1 Cl7 109.548
H3 C1 F5 109.851 H3 C1 Cl7 108.013
H4 C2 F6 109.851 H4 C2 Cl8 108.013
F5 C1 Cl7 109.102 F6 C2 Cl8 109.102
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability