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: CCSD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD/6-311+G(3df,2p)
 hartrees
Energy at 0K-636.658331
Energy at 298.15K-636.660629
HF Energy-635.876254
Nuclear repulsion energy145.649084
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 CCSD/6-311+G(3df,2p)
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' 3268 3082 4.66      
2 A' 3243 3058 7.11      
3 A' 1744 1645 60.00      
4 A' 1384 1305 23.96      
5 A' 1280 1208 36.97      
6 A' 1101 1038 81.56      
7 A' 836 788 15.80      
8 A' 675 637 20.53      
9 A' 201 189 1.58      
10 A" 913 861 0.27      
11 A" 772 728 41.00      
12 A" 461 435 7.01      

Unscaled Zero Point Vibrational Energy (zpe) 7938.2 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 7486.5 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 CCSD/6-311+G(3df,2p)
ABC
0.55698 0.12384 0.10131

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.863 0.000
C2 1.248 0.417 0.000
Cl3 -1.375 -0.164 0.000
F4 1.554 -0.876 0.000
H5 -0.195 1.923 0.000
H6 2.109 1.069 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32501.71622.33161.07812.1187
C21.32502.68671.32842.08561.0801
Cl31.71622.68673.01452.39763.6958
F42.33161.32843.01453.30012.0226
H51.07812.08562.39763.30012.4566
H62.11871.08013.69582.02262.4566

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 122.977 C1 C2 H6 123.185
C2 C1 Cl3 123.609 C2 C1 H5 120.072
Cl3 C1 H5 116.318 F4 C2 H6 113.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability