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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-995.125621
Energy at 298.15K-995.123879
HF Energy-994.594409
Nuclear repulsion energy153.111164
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 MP3/6-31G*
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 2422 2273 0.00      
2 Σg 487 457 0.00      
3 Σu 1019 956 46.12      
4 Πg 215 202 0.00      
4 Πg 215 202 0.00      
5 Πu 174 163 0.74      
5 Πu 174 163 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 2352.8 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 2208.4 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 MP3/6-31G*
B
0.04644

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.601
C2 0.000 0.000 -0.601
Cl3 0.000 0.000 2.251
Cl4 0.000 0.000 -2.251

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.20161.65002.8516
C21.20162.85161.6500
Cl31.65002.85164.5015
Cl42.85161.65004.5015

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