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All results from a given calculation for CFClCFCl (cis-1,2-dichloro-1,2-difluoroethylene)

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 C2V 1A1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-1188.563610
Energy at 298.15K-1188.564116
HF Energy-1187.844415
Nuclear repulsion energy347.220678
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 A1 1760 1691 2.58      
2 A1 1163 1118 179.47      
3 A1 543 522 1.72      
4 A1 312 300 2.46      
5 A1 176 169 1.98      
6 A2 576 553 0.00      
7 A2 149 143 0.00      
8 B1 357 343 2.62      
9 B2 1221 1174 5.53      
10 B2 926 890 122.16      
11 B2 434 417 0.00      
12 B2 397 381 1.36      

Unscaled Zero Point Vibrational Energy (zpe) 4005.9 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 3850.0 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
0.09817 0.06217 0.03806

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.668 0.420
C2 0.000 -0.668 0.420
F3 0.000 1.365 1.605
F4 0.000 -1.365 1.605
Cl5 0.000 1.647 -0.998
Cl6 0.000 -1.647 -0.998

Atom - Atom Distances (Å)
  C1 C2 F3 F4 Cl5 Cl6
C11.33511.37472.35261.72332.7142
C21.33512.35261.37472.71421.7233
F31.37472.35262.73002.61793.9805
F42.35261.37472.73003.98052.6179
Cl51.72332.71422.61793.98053.2935
Cl62.71421.72333.98052.61793.2935

picture of cis-1,2-dichloro-1,2-difluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 120.486 C1 C2 Cl6 124.626
C2 C1 F3 120.486 C2 C1 Cl5 124.626
F3 C1 Cl5 114.887 F4 C2 Cl6 114.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability