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 CHFCHCl ((E)-1-chloro-2-fluoroethene)

using model chemistry: B2PLYP=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-637.278089
Energy at 298.15K-637.280187
HF Energy-637.009493
Nuclear repulsion energy140.360182
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 B2PLYP=FULL/cc-pVTZ
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' 3257 3113 6.35      
2 A' 3248 3105 7.57      
3 A' 1707 1632 25.76      
4 A' 1335 1276 0.61      
5 A' 1249 1194 2.72      
6 A' 1154 1103 178.91      
7 A' 885 846 52.81      
8 A' 453 433 1.59      
9 A' 272 260 5.91      
10 A" 937 895 56.90      
11 A" 826 790 9.57      
12 A" 276 263 1.37      

Unscaled Zero Point Vibrational Energy (zpe) 7799.1 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 7454.4 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 B2PLYP=FULL/cc-pVTZ
ABC
1.82918 0.08216 0.07863

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.477 0.000
C2 1.021 -0.362 0.000
Cl3 -1.630 -0.097 0.000
F4 2.280 0.095 0.000
H5 0.121 1.546 0.000
H6 0.948 -1.437 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32161.72832.31181.07542.1361
C21.32162.66401.33972.10951.0770
Cl31.72832.66403.91482.40122.9056
F42.31181.33973.91482.60102.0298
H51.07542.10952.40122.60103.0952
H62.13611.07702.90562.02983.0952

picture of (E)-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 120.603 C1 C2 H6 125.577
C2 C1 Cl3 121.150 C2 C1 H5 122.971
Cl3 C1 H5 115.879 F4 C2 H6 113.819
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability