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

using model chemistry: QCISD(T)/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 QCISD(T)/TZVP
 hartrees
Energy at 0K-1195.918548
Energy at 298.15K-1195.922036
HF Energy-1194.876545
Nuclear repulsion energy374.266695
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(T)/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 3148 3032        
2 Ag 1427 1375        
3 Ag 1354 1304        
4 Ag 1138 1096        
5 Ag 1090 1050        
6 Ag 845 814        
7 Ag 520 500        
8 Ag 377 363        
9 Ag 269 259        
10 Au 3160 3043        
11 Au 1348 1298        
12 Au 1269 1222        
13 Au 1123 1081        
14 Au 788 759        
15 Au 404 389        
16 Au 378 364        
17 Au 172 165        
18 Au 72 70        

Unscaled Zero Point Vibrational Energy (zpe) 9439.6 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 9092.2 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 QCISD(T)/TZVP
ABC
0.13345 0.04869 0.03684

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.764
C2 0.000 0.000 0.764
H3 1.015 0.000 -1.159
H4 -1.015 0.000 1.159
F5 -0.660 -1.108 -1.207
F6 0.660 1.108 1.207
Cl7 -0.839 1.461 -1.360
Cl8 0.839 -1.461 1.360

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52771.08922.17411.36392.35511.78672.7104
C21.52772.17411.08922.35511.36392.71041.7867
H31.08922.17413.08092.00942.63592.36902.9164
H42.17411.08923.08092.63592.00942.91642.3690
F51.36392.35512.00942.63593.53262.57942.9930
F62.35511.36392.63592.00943.53262.99302.5794
Cl71.78672.71042.36902.91642.57942.99304.3294
Cl82.71041.78672.91642.36902.99302.57944.3294

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 111.254 C1 C2 F6 108.942
C1 C2 Cl8 109.475 C2 C1 H3 111.254
C2 C1 F5 108.942 C2 C1 Cl7 109.475
H3 C1 F5 109.489 H3 C1 Cl7 108.478
H4 C2 F6 109.489 H4 C2 Cl8 108.478
F5 C1 Cl7 109.175 F6 C2 Cl8 109.175
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability