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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-996.100966
Energy at 298.15K 
HF Energy-995.928872
Nuclear repulsion energy152.971919
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 2322 2204 0.00      
2 Σg 480 455 0.00      
3 Σu 1004 953 53.13      
4 Πg 224 213 0.00      
5 Πg 224 213 0.00      
6 Πu 173 164 0.88      
7 Πu 173 164 0.88      

Unscaled Zero Point Vibrational Energy (zpe) 2300.0 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 2183.1 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 B2PLYP/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.605
C2 0.000 0.000 -0.605
Cl3 0.000 0.000 2.253
Cl4 0.000 0.000 -2.253

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.20931.64822.8575
C21.20932.85751.6482
Cl31.64822.85754.5057
Cl42.85751.64824.5057

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.121      
2 C -0.121      
3 Cl 0.121      
4 Cl 0.121      


Electric dipole moments


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 2.630 0.000 0.000
y 0.000 2.630 0.000
z 0.000 0.000 10.947


<r2> (average value of r2) Å2
<r2> 198.369
(<r2>)1/2 14.084