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/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-106.230821
Energy at 298.15K-106.232741
Nuclear repulsion energy76.235050
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/LANL2DZ
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 3486 3137 0.00      
2 Ag 1806 1625 0.00      
3 Ag 1417 1275 0.00      
4 Ag 859 773 0.00      
5 Ag 354 319 0.00      
6 Au 1058 952 118.26      
7 Au 225 202 2.47      
8 Bg 914 823 0.00      
9 Bu 3477 3129 16.50      
10 Bu 1335 1201 23.75      
11 Bu 795 716 142.78      
12 Bu 245 220 8.23      

Unscaled Zero Point Vibrational Energy (zpe) 7985.6 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 7186.2 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/LANL2DZ
ABC
1.75641 0.04887 0.04755

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.658 0.000
C2 0.000 -0.658 0.000
H3 0.864 1.285 0.000
H4 -0.864 -1.285 0.000
Cl5 -1.539 1.576 0.000
Cl6 1.539 -1.576 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6
C11.31701.06702.12671.79162.7130
C21.31702.12671.06702.71301.7916
H31.06702.12673.09642.42042.9392
H42.12671.06703.09642.93922.4204
Cl51.79162.71302.42042.93924.4053
Cl62.71301.79162.93922.42044.4053

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 125.943 C1 C2 Cl6 120.796
C2 C1 H3 125.943 C2 C1 Cl5 120.796
H3 C1 Cl5 113.261 H4 C2 Cl6 113.261
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 C -0.195      
3 H 0.267      
4 H 0.267      
5 Cl -0.072      
6 Cl -0.072      


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        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.672 5.763 0.000
y 5.763 -37.743 0.000
z 0.000 0.000 -37.705
Traceless
 xyz
x -0.948 5.763 0.000
y 5.763 0.445 0.000
z 0.000 0.000 0.503
Polar
3z2-r21.006
x2-y2-0.929
xy5.763
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.364 -3.001 0.000
y -3.001 7.138 0.000
z 0.000 0.000 1.577


<r2> (average value of r2) Å2
<r2> 101.680
(<r2>)1/2 10.084