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 CHFCHClz ((Z)-1-Chloro-2-fluoroethene)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-636.451527
Energy at 298.15K-636.453801
HF Energy-635.844990
Nuclear repulsion energy145.090888
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 MP2/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3285 3122 8.87      
2 A' 3257 3096 5.03      
3 A' 1724 1638 56.43      
4 A' 1385 1316 22.88      
5 A' 1283 1219 29.90      
6 A' 1100 1046 94.78      
7 A' 837 796 17.62      
8 A' 675 641 19.80      
9 A' 201 191 1.46      
10 A" 875 832 0.04      
11 A" 763 725 51.87      
12 A" 458 436 11.68      

Unscaled Zero Point Vibrational Energy (zpe) 7921.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 7528.2 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 MP2/6-311G*
ABC
0.55259 0.12285 0.10051

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.868 0.000
C2 1.252 0.411 0.000
Cl3 -1.380 -0.158 0.000
F4 1.559 -0.887 0.000
H5 -0.198 1.931 0.000
H6 2.117 1.064 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.33301.71952.34761.08112.1262
C21.33302.69331.33422.10071.0838
Cl31.71952.69333.02862.39963.7047
F42.34761.33423.02863.32102.0297
H51.08112.10072.39963.32102.4721
H62.12621.08383.70472.02972.4721

picture of (Z)-1-Chloro-2-fluoroethene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 123.332 C1 C2 H6 122.906
C2 C1 Cl3 123.353 C2 C1 H5 120.598
Cl3 C1 H5 116.049 F4 C2 H6 113.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability