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: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-637.390855
Energy at 298.15K-637.392959
HF Energy-637.390855
Nuclear repulsion energy140.883323
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 mPW1PW91/6-31G(2df,p)
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' 3261 3113 9.98      
2 A' 3240 3093 5.39      
3 A' 1741 1662 30.67      
4 A' 1337 1276 0.23      
5 A' 1236 1180 0.70      
6 A' 1202 1148 172.10      
7 A' 899 858 49.67      
8 A' 459 438 1.57      
9 A' 270 257 5.45      
10 A" 949 906 41.19      
11 A" 825 787 13.55      
12 A" 280 267 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 7848.2 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 7492.7 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 mPW1PW91/6-31G(2df,p)
ABC
1.82983 0.08281 0.07922

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.480 0.000
C2 1.020 -0.363 0.000
Cl3 -1.624 -0.087 0.000
F4 2.270 0.074 0.000
H5 0.121 1.554 0.000
H6 0.932 -1.443 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32331.72022.30661.08082.1368
C21.32332.65851.32432.11741.0835
Cl31.72022.65853.89782.39532.8933
F42.30661.32433.89782.61022.0226
H51.08082.11742.39532.61023.1047
H62.13681.08352.89332.02263.1047

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 121.193 C1 C2 H6 124.901
C2 C1 Cl3 121.185 C2 C1 H5 123.151
Cl3 C1 H5 115.664 F4 C2 H6 113.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.216      
2 C 0.066      
3 Cl -0.100      
4 F -0.094      
5 H 0.185      
6 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.367 -0.098 0.000 0.380
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.752 -0.805 0.000
y -0.805 -25.882 0.000
z 0.000 0.000 -29.801
Traceless
 xyz
x -3.910 -0.805 0.000
y -0.805 4.894 0.000
z 0.000 0.000 -0.984
Polar
3z2-r2-1.967
x2-y2-5.869
xy-0.805
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.327 -0.360 0.000
y -0.360 4.579 0.000
z 0.000 0.000 2.964


<r2> (average value of r2) Å2
<r2> 123.410
(<r2>)1/2 11.109