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All results from a given calculation for CHFClCHClF (ethane, 1,2-dichloro-1,2-difluoro-)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-1189.777643
Energy at 298.15K-1189.780961
HF Energy-1189.053150
Nuclear repulsion energy370.558638
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/3-21G*
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 3146 3023 0.00      
2 Ag 1432 1376 0.00      
3 Ag 1364 1311 0.00      
4 Ag 1118 1075 0.00      
5 Ag 1056 1015 0.00      
6 Ag 816 784 0.00      
7 Ag 492 473 0.00      
8 Ag 359 345 0.00      
9 Ag 267 257 0.00      
10 Au 3160 3037 9.19      
11 Au 1354 1301 28.52      
12 Au 1303 1252 24.49      
13 Au 1131 1087 123.75      
14 Au 749 720 184.89      
15 Au 376 361 5.67      
16 Au 349 335 32.78      
17 Au 164 158 2.58      
18 Au 68 65 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 9351.3 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 8987.5 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/3-21G*
ABC
0.12853 0.04838 0.03632

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.767
C2 0.000 0.000 0.767
H3 1.019 0.000 -1.154
H4 -1.019 0.000 1.154
F5 -0.710 -1.127 -1.205
F6 0.710 1.127 1.205
Cl7 -0.816 1.492 -1.354
Cl8 0.816 -1.492 1.354

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.53361.09042.17451.40222.37931.79882.7182
C21.53362.17451.09042.37931.40222.71821.7988
H31.09042.17453.07932.06512.63212.37342.9251
H42.17451.09043.07932.63212.06512.92512.3734
F51.40222.37932.06512.63213.59202.62503.0014
F62.37931.40222.63212.06513.59203.00142.6250
Cl71.79882.71822.37342.92512.62503.00144.3470
Cl82.71821.79882.92512.37343.00142.62504.3470

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 110.796 C1 C2 F6 108.191
C1 C2 Cl8 109.051 C2 C1 H3 110.796
C2 C1 F5 108.191 C2 C1 Cl7 109.051
H3 C1 F5 111.275 H3 C1 Cl7 107.945
H4 C2 F6 111.275 H4 C2 Cl8 107.945
F5 C1 Cl7 109.558 F6 C2 Cl8 109.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability