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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CI 1AG
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-1189.391673
Energy at 298.15K-1189.394758
HF Energy-1188.834835
Nuclear repulsion energy361.438018
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 MP4/3-21G
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 3166 3071        
2 Ag 1426 1383        
3 Ag 1299 1260        
4 Ag 1126 1092        
5 Ag 1049 1018        
6 Ag 729 707        
7 Ag 477 462        
8 Ag 320 310        
9 Ag 246 238        
10 Au 3180 3084        
11 Au 1335 1294        
12 Au 1238 1201        
13 Au 1139 1104        
14 Au 667 647        
15 Au 343 332        
16 Au 325 315        
17 Au 153 148        
18 Au 65 63        

Unscaled Zero Point Vibrational Energy (zpe) 9140.3 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 8864.2 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 MP4/3-21G
ABC
0.12640 0.04508 0.03430

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.761
C2 0.000 0.000 0.761
H3 1.006 0.000 -1.180
H4 -1.006 0.000 1.180
F5 -0.782 -1.051 -1.236
F6 0.782 1.051 1.236
Cl7 -0.787 1.659 -1.319
Cl8 0.787 -1.659 1.319

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52211.08942.18581.39362.38821.91902.7743
C21.52212.18581.08942.38821.39362.77431.9190
H31.08942.18583.10032.07472.64372.44663.0069
H42.18581.08943.10032.64372.07473.00692.4466
F51.39362.38822.07472.64373.60212.71183.0585
F62.38821.39362.64372.07473.60213.05852.7118
Cl71.91902.77432.44663.00692.71183.05854.5213
Cl82.77431.91903.00692.44663.05852.71184.5213

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 112.596 C1 C2 F6 109.911
C1 C2 Cl8 106.889 C2 C1 H3 112.596
C2 C1 F5 109.911 C2 C1 Cl7 106.889
H3 C1 F5 112.775 H3 C1 Cl7 105.484
H4 C2 F6 112.775 H4 C2 Cl8 105.484
F5 C1 Cl7 108.862 F6 C2 Cl8 108.862
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability