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: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-634.324458
Energy at 298.15K-634.326773
HF Energy-634.324458
Nuclear repulsion energy144.927739
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 mPW1PW91/3-21G*
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' 3296 3130 8.46      
2 A' 3254 3090 2.69      
3 A' 1757 1668 39.66      
4 A' 1418 1346 11.81      
5 A' 1307 1241 14.36      
6 A' 1106 1050 65.41      
7 A' 817 776 14.35      
8 A' 674 640 23.35      
9 A' 197 187 1.49      
10 A" 984 934 0.31      
11 A" 796 756 61.98      
12 A" 479 455 10.29      

Unscaled Zero Point Vibrational Energy (zpe) 8041.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 7636.6 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 mPW1PW91/3-21G*
ABC
0.53378 0.12478 0.10113

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.885 0.000
C2 1.239 0.425 0.000
Cl3 -1.369 -0.165 0.000
F4 1.550 -0.898 0.000
H5 -0.210 1.944 0.000
H6 2.096 1.085 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32211.72562.36291.07872.1058
C21.32212.67441.35922.09901.0814
Cl31.72562.67443.00952.40623.6838
F42.36291.35923.00953.34242.0569
H51.07872.09902.40623.34242.4609
H62.10581.08143.68382.05692.4609

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 123.574 C1 C2 H6 122.039
C2 C1 Cl3 122.126 C2 C1 H5 121.588
Cl3 C1 H5 116.286 F4 C2 H6 114.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.447      
2 C 0.136      
3 Cl 0.049      
4 F -0.266      
5 H 0.279      
6 H 0.248      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.082 2.123 0.000 2.382
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.959 2.527 0.000
y 2.527 -26.928 0.000
z 0.000 0.000 -30.481
Traceless
 xyz
x 0.746 2.527 0.000
y 2.527 2.292 0.000
z 0.000 0.000 -3.038
Polar
3z2-r2-6.076
x2-y2-1.031
xy2.527
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.401 0.360 0.000
y 0.360 4.026 0.000
z 0.000 0.000 1.693


<r2> (average value of r2) Å2
<r2> 103.372
(<r2>)1/2 10.167