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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-994.510077
Energy at 298.15K-994.509162
Nuclear repulsion energy150.237131
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/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 2563 2315 0.00      
2 Σg 470 424 0.00      
3 Σu 977 882 8.59      
4 Πg 607 548 0.00      
4 Πg 607 548 0.00      
5 Πu 201 181 0.55      
5 Πu 201 181 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 2812.9 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 2539.8 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 HF/6-31G
B
0.04477

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.592
C2 0.000 0.000 -0.592
Cl3 0.000 0.000 2.294
Cl4 0.000 0.000 -2.294

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.18311.70272.8858
C21.18312.88581.7027
Cl31.70272.88584.5886
Cl42.88581.70274.5886

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/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.402      
2 C -0.402      
3 Cl 0.402      
4 Cl 0.402      


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 -36.666 0.000 0.000
y 0.000 -36.666 0.000
z 0.000 0.000 -34.298
Traceless
 xyz
x -1.184 0.000 0.000
y 0.000 -1.184 0.000
z 0.000 0.000 2.368
Polar
3z2-r24.736
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