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: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-997.777912
Energy at 298.15K-997.779783
Nuclear repulsion energy175.560755
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 mPW1PW91/6-31+G**
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 3269 3111 0.00      
2 Ag 1682 1601 0.00      
3 Ag 1315 1252 0.00      
4 Ag 876 834 0.00      
5 Ag 359 341 0.00      
6 Au 938 893 75.33      
7 Au 217 207 0.16      
8 Bg 802 764 0.00      
9 Bu 3266 3108 16.13      
10 Bu 1240 1180 18.13      
11 Bu 849 808 140.45      
12 Bu 240 229 3.34      

Unscaled Zero Point Vibrational Energy (zpe) 7526.0 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 7163.3 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 mPW1PW91/6-31+G**
ABC
1.77681 0.05117 0.04973

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.664 0.000
C2 0.000 -0.664 0.000
H3 0.900 1.266 0.000
H4 -0.900 -1.266 0.000
Cl5 -1.469 1.571 0.000
Cl6 1.469 -1.571 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6
C11.32861.08242.12941.72632.6746
C21.32862.12941.08242.67461.7263
H31.08242.12943.10582.38862.8929
H42.12941.08243.10582.89292.3886
Cl51.72632.67462.38862.89294.3014
Cl62.67461.72632.89292.38864.3014

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 123.747 C1 C2 Cl6 121.677
C2 C1 H3 123.747 C2 C1 Cl5 121.677
H3 C1 Cl5 114.577 H4 C2 Cl6 114.577
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 C -0.301      
3 H 0.223      
4 H 0.223      
5 Cl 0.078      
6 Cl 0.078      


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 -37.066 2.981 0.000
y 2.981 -37.135 0.000
z 0.000 0.000 -38.718
Traceless
 xyz
x 0.860 2.981 0.000
y 2.981 0.757 0.000
z 0.000 0.000 -1.617
Polar
3z2-r2-3.235
x2-y20.069
xy2.981
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 190.897
(<r2>)1/2 13.817