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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: CCD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at CCD/cc-pVDZ
 hartrees
Energy at 0K-995.185123
Energy at 298.15K-995.183725
HF Energy-994.641197
Nuclear repulsion energy151.850561
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 CCD/cc-pVDZ
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 2356 2254 0.00      
2 Σg 480 459 0.00      
3 Σu 1008 964 46.79      
4 Πg 337 323 0.00      
4 Πg 337 323 0.00      
5 Πu 181 173 1.16      
5 Πu 181 173 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 2440.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 2334.6 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 CCD/cc-pVDZ
B
0.04568

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.608
C2 0.000 0.000 -0.608
Cl3 0.000 0.000 2.269
Cl4 0.000 0.000 -2.269

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.21551.66172.8772
C21.21552.87721.6617
Cl31.66172.87724.5389
Cl42.87721.66174.5389

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