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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-996.499042
Energy at 298.15K-996.497494
Nuclear repulsion energy152.969215
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 B3LYP/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 Σg 2347 2254 0.00      
2 Σg 477 458 0.00      
3 Σu 993 954 56.93      
4 Πg 288 277 0.00      
4 Πg 288 277 0.00      
5 Πu 178 171 0.97      
5 Πu 178 171 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 2374.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 2280.3 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 B3LYP/6-31G*
B
0.04635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.603
C2 0.000 0.000 -0.603
Cl3 0.000 0.000 2.253
Cl4 0.000 0.000 -2.253

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.20551.65012.8556
C21.20552.85561.6501
Cl31.65012.85564.5057
Cl42.85561.65014.5057

picture of dichloroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 180.000 C2 C1 Cl3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.107      
2 C -0.107      
3 Cl 0.107      
4 Cl 0.107      


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 -35.669 0.000 0.000
y 0.000 -35.669 0.000
z 0.000 0.000 -30.627
Traceless
 xyz
x -2.521 0.000 0.000
y 0.000 -2.521 0.000
z 0.000 0.000 5.042
Polar
3z2-r210.085
x2-y20.000
xy0.000
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> 198.152
(<r2>)1/2 14.077