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: MP4/6-311+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 MP4/6-311+G(3df,2p)
 hartrees
Energy at 0K-636.693648
Energy at 298.15K-636.695714
HF Energy-635.874013
Nuclear repulsion energy140.081133
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 MP4/6-311+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' 3231 3050        
2 A' 3224 3042        
3 A' 1674 1579        
4 A' 1319 1245        
5 A' 1240 1170        
6 A' 1137 1073        
7 A' 893 843        
8 A' 451 425        
9 A' 270 255        
10 A" 911 860        
11 A" 797 752        
12 A" 271 255        

Unscaled Zero Point Vibrational Energy (zpe) 7708.1 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 7274.9 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 MP4/6-311+G(3df,2p)
ABC
1.79933 0.08202 0.07845

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.481 0.000
C2 1.017 -0.380 0.000
Cl3 -1.631 -0.077 0.000
F4 2.284 0.068 0.000
H5 0.140 1.554 0.000
H6 0.935 -1.459 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.33241.72442.32131.08162.1535
C21.33242.66571.34372.12271.0821
Cl31.72442.66573.91832.40832.9148
F42.32131.34373.91832.60832.0370
H51.08162.12272.40832.60833.1154
H62.15351.08212.91482.03703.1154

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 120.311 C1 C2 H6 125.909
C2 C1 Cl3 120.856 C2 C1 H5 122.783
Cl3 C1 H5 116.361 F4 C2 H6 113.780
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability