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 CHClCHCl (Ethene, 1,2-dichloro-, (E)-)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-995.893485
Energy at 298.15K-995.895507
Nuclear repulsion energy175.884305
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 HF/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3416 3089 0.00      
2 Ag 1819 1645 0.00      
3 Ag 1428 1291 0.00      
4 Ag 922 834 0.00      
5 Ag 377 341 0.00      
6 Au 1050 949 81.74      
7 Au 233 211 0.66      
8 Bg 905 818 0.00      
9 Bu 3410 3084 16.05      
10 Bu 1345 1216 26.93      
11 Bu 876 792 155.47      
12 Bu 258 234 4.58      

Unscaled Zero Point Vibrational Energy (zpe) 8019.0 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 7252.4 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 HF/6-311G*
ABC
1.81739 0.05124 0.04983

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.654 0.000
C2 0.000 -0.654 0.000
H3 0.886 1.254 0.000
H4 -0.886 -1.254 0.000
Cl5 -1.474 1.565 0.000
Cl6 1.474 -1.565 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6
C11.30841.07022.10391.73252.6643
C21.30842.10391.07022.66431.7325
H31.07022.10393.07112.38052.8798
H42.10391.07023.07112.87982.3805
Cl51.73252.66432.38052.87984.2998
Cl62.66431.73252.87982.38054.2998

picture of Ethene, 1,2-dichloro-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 124.075 C1 C2 Cl6 121.733
C2 C1 H3 124.075 C2 C1 Cl5 121.733
H3 C1 Cl5 114.192 H4 C2 Cl6 114.192
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.243 -0.064   -0.135
2 C -0.243 -0.064   -0.115
3 H 0.303 0.184   0.222
4 H 0.303 0.184   0.219
5 Cl -0.060 -0.120   -0.094
6 Cl -0.060 -0.120   -0.098


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP -0.011 -0.013 0.000 0.017


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.236 3.662 0.000
y 3.662 -38.325 0.000
z 0.000 0.000 -39.490
Traceless
 xyz
x 0.672 3.662 0.000
y 3.662 0.538 0.000
z 0.000 0.000 -1.209
Polar
3z2-r2-2.419
x2-y20.089
xy3.662
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.997 -2.826 0.000
y -2.826 8.099 0.000
z 0.000 0.000 2.717


<r2> (average value of r2) Å2
<r2> 191.161
(<r2>)1/2 13.826