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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-996.114637
Energy at 298.15K-996.113184
Nuclear repulsion energy153.447373
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 PBEPBE/cc-pVTZ
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 2252 2237 0.00      
2 Σg 475 471 0.00      
3 Σu 991 985 65.45      
4 Πg 321 319 0.00      
4 Πg 321 319 0.00      
5 Πu 176 175 2.43      
5 Πu 176 175 2.43      

Unscaled Zero Point Vibrational Energy (zpe) 2356.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 2340.0 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 PBEPBE/cc-pVTZ
B
0.04662

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.606
C2 0.000 0.000 -0.606
Cl3 0.000 0.000 2.246
Cl4 0.000 0.000 -2.246

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.21241.63972.8521
C21.21242.85211.6397
Cl31.63972.85214.4918
Cl42.85211.63974.4918

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 PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.045      
2 C -0.045      
3 Cl 0.045      
4 Cl 0.045      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.954 0.000 0.000
y 0.000 -35.954 0.000
z 0.000 0.000 -30.127
Traceless
 xyz
x -2.914 0.000 0.000
y 0.000 -2.914 0.000
z 0.000 0.000 5.827
Polar
3z2-r211.655
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.940 0.000 0.000
y 0.000 3.940 0.000
z 0.000 0.000 12.820


<r2> (average value of r2) Å2
<r2> 197.149
(<r2>)1/2 14.041