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/TZVP

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/TZVP
 hartrees
Energy at 0K-1197.144987
Energy at 298.15K 
HF Energy-1196.789787
Nuclear repulsion energy374.270755
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/TZVP
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 1422 1422 0.00      
3 Ag 1337 1337 0.00      
4 Ag 1126 1126 0.00      
5 Ag 1079 1079 0.00      
6 Ag 827 827 0.00      
7 Ag 519 519 0.00      
8 Ag 373 373 0.00      
9 Ag 269 269 0.00      
10 Au 3171 3171 8.96      
11 Au 1347 1347 16.97      
12 Au 1257 1257 40.01      
13 Au 1111 1111 269.10      
14 Au 770 770 224.13      
15 Au 402 402 2.75      
16 Au 378 378 30.80      
17 Au 173 173 1.22      
18 Au 71 71 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 9394.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9394.6 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=FULLultrafine/TZVP
ABC
0.13372 0.04861 0.03681

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/TZVP

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 1.010 0.000 -1.161
H4 -1.010 0.000 1.161
F5 -0.666 -1.100 -1.208
F6 0.666 1.100 1.208
Cl7 -0.830 1.470 -1.358
Cl8 0.830 -1.470 1.358

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52421.08582.17231.36122.35301.79042.7103
C21.52422.17231.08582.35301.36122.71031.7904
H31.08582.17233.07782.00552.63492.36332.9224
H42.17231.08583.07782.63492.00552.92242.3633
F51.36122.35302.00552.63493.52932.57942.9940
F62.35301.36122.63492.00553.52932.99402.5794
Cl71.79042.71032.36332.92242.57942.99404.3335
Cl82.71031.79042.92242.36332.99402.57944.3335

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 111.565 C1 C2 F6 109.137
C1 C2 Cl8 109.446 C2 C1 H3 111.565
C2 C1 F5 109.137 C2 C1 Cl7 109.446
H3 C1 F5 109.564 H3 C1 Cl7 107.989
H4 C2 F6 109.564 H4 C2 Cl8 107.989
F5 C1 Cl7 109.102 F6 C2 Cl8 109.102
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability