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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: B3LYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-996.601436
Energy at 298.15K-996.600238
Nuclear repulsion energy154.223653
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/6-311+G(3df,2p)
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 2315 2239 0.00      
2 Σg 481 465 0.00      
3 Σu 1002 969 57.89      
4 Πg 427 413 0.00      
4 Πg 427 413 0.00      
5 Πu 187 180 2.18      
5 Πu 187 180 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 2512.8 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 2429.8 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/6-311+G(3df,2p)
B
0.04711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.599
C2 0.000 0.000 -0.599
Cl3 0.000 0.000 2.235
Cl4 0.000 0.000 -2.235

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.19841.63532.8338
C21.19842.83381.6353
Cl31.63532.83384.4691
Cl42.83381.63534.4691

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/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.089      
2 C 0.089      
3 Cl -0.089      
4 Cl -0.089      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.086 0.000 0.000
y 0.000 5.086 0.000
z 0.000 0.000 13.224


<r2> (average value of r2) Å2
<r2> 195.656
(<r2>)1/2 13.988