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: TPSSh/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 TPSSh/3-21G*
 hartrees
Energy at 0K-634.360240
Energy at 298.15K-634.362303
HF Energy-634.360240
Nuclear repulsion energy138.664763
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 TPSSh/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' 3260 3149 7.43      
2 A' 3230 3120 4.27      
3 A' 1700 1642 15.66      
4 A' 1364 1317 1.59      
5 A' 1266 1223 3.85      
6 A' 1146 1107 101.41      
7 A' 846 817 49.41      
8 A' 439 424 1.62      
9 A' 268 259 5.84      
10 A" 968 935 74.00      
11 A" 838 810 25.40      
12 A" 274 265 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 7799.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 7532.3 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 TPSSh/3-21G*
ABC
1.80474 0.08006 0.07666

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.488 0.000
C2 1.016 -0.370 0.000
Cl3 -1.648 -0.080 0.000
F4 2.321 0.061 0.000
H5 0.125 1.561 0.000
H6 0.901 -1.447 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32921.74302.36041.08052.1340
C21.32922.67931.37502.12611.0828
Cl31.74302.67933.97192.41612.8923
F42.36041.37503.97192.65952.0711
H51.08052.12612.41612.65953.1060
H62.13401.08282.89232.07113.1060

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 121.570 C1 C2 H6 124.112
C2 C1 Cl3 120.813 C2 C1 H5 123.512
Cl3 C1 H5 115.675 F4 C2 H6 114.318
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.415      
2 C 0.125      
3 Cl 0.029      
4 F -0.261      
5 H 0.279      
6 H 0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.240 -0.152 0.000 0.284
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.859 -0.303 0.000
y -0.303 3.828 0.000
z 0.000 0.000 1.687


<r2> (average value of r2) Å2
<r2> 127.210
(<r2>)1/2 11.279