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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-105.239410
Energy at 298.15K-105.237795
HF Energy-104.977883
Nuclear repulsion energy61.705462
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 MP2/LANL2DZ
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 2208 2127 0.00      
2 Σg 416 401 0.00      
3 Σu 884 851 20.27      
4 Πg 315 304 0.00      
4 Πg 315 304 0.00      
5 Πu 160 154 0.96      
5 Πu 160 154 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 2229.0 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 2146.7 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 MP2/LANL2DZ
B
0.04285

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.618
C2 0.000 0.000 -0.618
Cl3 0.000 0.000 2.344
Cl4 0.000 0.000 -2.344

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.23631.72572.9620
C21.23632.96201.7257
Cl31.72572.96204.6877
Cl42.96201.72574.6877

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 MP2/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.053      
2 C -0.053      
3 Cl 0.053      
4 Cl 0.053      


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 -35.383 0.000 0.000
y 0.000 -35.383 0.000
z 0.000 0.000 -32.888
Traceless
 xyz
x -1.247 0.000 0.000
y 0.000 -1.247 0.000
z 0.000 0.000 2.494
Polar
3z2-r24.989
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000