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: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-637.017321
Energy at 298.15K-637.019311
HF Energy-637.017321
Nuclear repulsion energy139.122714
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 PBEPBE/6-31G**
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' 3178 3135 8.79      
2 A' 3149 3106 6.42      
3 A' 1669 1646 20.76      
4 A' 1289 1271 0.12      
5 A' 1202 1185 1.08      
6 A' 1151 1135 155.91      
7 A' 861 849 55.16      
8 A' 440 434 1.45      
9 A' 262 258 4.82      
10 A" 890 877 51.29      
11 A" 749 739 13.12      
12 A" 265 262 0.88      

Unscaled Zero Point Vibrational Energy (zpe) 7552.4 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 7448.9 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 PBEPBE/6-31G**
ABC
1.79070 0.08075 0.07726

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.479 0.000
C2 1.031 -0.376 0.000
Cl3 -1.645 -0.084 0.000
F4 2.300 0.078 0.000
H5 0.126 1.563 0.000
H6 0.949 -1.466 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.33931.73832.33471.09082.1648
C21.33932.69121.34802.13941.0937
Cl31.73832.69123.94792.41792.9389
F42.33471.34803.94792.63252.0523
H51.09082.13942.41792.63253.1390
H62.16481.09372.93892.05233.1390

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 120.633 C1 C2 H6 125.379
C2 C1 Cl3 121.420 C2 C1 H5 123.045
Cl3 C1 H5 115.535 F4 C2 H6 113.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 C 0.209      
3 Cl 0.009      
4 F -0.227      
5 H 0.170      
6 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.401 -0.109 0.000 0.416
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.585 -0.731 0.000
y -0.731 -26.110 0.000
z 0.000 0.000 -30.059
Traceless
 xyz
x -3.500 -0.731 0.000
y -0.731 4.712 0.000
z 0.000 0.000 -1.211
Polar
3z2-r2-2.423
x2-y2-5.475
xy-0.731
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.273 -0.307 0.000
y -0.307 4.264 0.000
z 0.000 0.000 2.251


<r2> (average value of r2) Å2
<r2> 126.141
(<r2>)1/2 11.231