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: MP2=FULL/aug-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 MP2=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-636.745100
Energy at 298.15K-636.747212
HF Energy-635.887079
Nuclear repulsion energy140.928159
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=FULL/aug-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' 3290 3130 1.59      
2 A' 3267 3109 13.65      
3 A' 1714 1631 26.78      
4 A' 1327 1263 0.76      
5 A' 1244 1183 2.27      
6 A' 1157 1101 183.97      
7 A' 909 865 43.88      
8 A' 458 436 1.77      
9 A' 270 257 5.80      
10 A" 938 893 55.85      
11 A" 824 784 8.24      
12 A" 280 266 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 7839.5 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 7458.5 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 MP2=FULL/aug-cc-pVTZ
ABC
1.82938 0.08296 0.07936

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.478 0.000
C2 1.009 -0.377 0.000
Cl3 -1.622 -0.074 0.000
F4 2.273 0.062 0.000
H5 0.148 1.542 0.000
H6 0.916 -1.448 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32241.71342.31071.07352.1328
C21.32242.64781.33822.10261.0748
Cl31.71342.64783.89712.39662.8858
F42.31071.33823.89712.58922.0295
H51.07352.10262.39662.58923.0863
H62.13281.07482.88582.02953.0863

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 120.570 C1 C2 H6 125.361
C2 C1 Cl3 120.890 C2 C1 H5 122.363
Cl3 C1 H5 116.747 F4 C2 H6 114.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability