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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: HF/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 HF/LANL2DZ
 hartrees
Energy at 0K-104.984328
Energy at 298.15K-104.983231
Nuclear repulsion energy63.471527
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 HF/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 2555 2299 0.00      
2 Σg 466 419 0.00      
3 Σu 975 878 20.32      
4 Πg 495 446 0.00      
4 Πg 495 446 0.00      
5 Πu 194 174 0.57      
5 Πu 194 174 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 2686.5 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 2417.6 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 HF/LANL2DZ
B
0.04516

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.593
C2 0.000 0.000 -0.593
Cl3 0.000 0.000 2.284
Cl4 0.000 0.000 -2.284

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.18681.69052.8773
C21.18682.87731.6905
Cl31.69052.87734.5678
Cl42.87731.69054.5678

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 HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.037      
2 C -0.037      
3 Cl 0.037      
4 Cl 0.037      


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 -35.121 0.000 0.000
y 0.000 -35.121 0.000
z 0.000 0.000 -34.205
Traceless
 xyz
x -0.458 0.000 0.000
y 0.000 -0.458 0.000
z 0.000 0.000 0.917
Polar
3z2-r21.833
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