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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-996.079554
Energy at 298.15K-996.078073
HF Energy-996.079554
Nuclear repulsion energy153.842659
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 PBE1PBE/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 2376 2258 0.00      
2 Σg 493 468 0.00      
3 Σu 1029 978 62.49      
4 Πg 304 289 0.00      
4 Πg 304 289 0.00      
5 Πu 181 172 1.13      
5 Πu 181 172 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 2433.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 2312.9 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 PBE1PBE/6-31G*
B
0.04687

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.602
C2 0.000 0.000 -0.602
Cl3 0.000 0.000 2.240
Cl4 0.000 0.000 -2.240

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.20471.63772.8424
C21.20472.84241.6377
Cl31.63772.84244.4802
Cl42.84241.63774.4802

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