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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: B3LYP/TZVP

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/TZVP
 hartrees
Energy at 0K-996.577389
Energy at 298.15K-996.575937
HF Energy-996.577389
Nuclear repulsion energy153.066555
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/TZVP
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 2331 2250 0.00      
2 Σg 471 454 0.00      
3 Σu 976 942 63.52      
4 Πg 327 316 0.00      
4 Πg 327 316 0.00      
5 Πu 175 169 2.61      
5 Πu 175 169 2.61      

Unscaled Zero Point Vibrational Energy (zpe) 2390.5 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 2307.8 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/TZVP
B
0.04642

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.600
C2 0.000 0.000 -0.600
Cl3 0.000 0.000 2.251
Cl4 0.000 0.000 -2.251

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.19911.65192.8510
C21.19912.85101.6519
Cl31.65192.85104.5029
Cl42.85101.65194.5029

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