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All results from a given calculation for C2Cl2 (dichloroacetylene)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Σg
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-996.457697
Energy at 298.15K-996.456133
Nuclear repulsion energy152.738904
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 BLYP/6-31G(2df,p)
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 2255 2242 0.00      
2 Σg 462 459 0.00      
3 Σu 965 960 56.39      
4 Πg 288 286 0.00      
4 Πg 288 286 0.00      
5 Πu 175 174 1.32      
5 Πu 175 174 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 2302.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 2290.2 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 BLYP/6-31G(2df,p)
B
0.04620

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.607
C2 0.000 0.000 -0.607
Cl3 0.000 0.000 2.256
Cl4 0.000 0.000 -2.256

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4
C11.21431.64912.8634
C21.21432.86341.6491
Cl31.64912.86344.5126
Cl42.86341.64914.5126

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 BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.035      
2 C 0.035      
3 Cl -0.035      
4 Cl -0.035      


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 -35.525 0.000 0.000
y 0.000 -35.525 0.000
z 0.000 0.000 -30.385
Traceless
 xyz
x -2.570 0.000 0.000
y 0.000 -2.570 0.000
z 0.000 0.000 5.140
Polar
3z2-r210.280
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 3.630 0.000 0.000
y 0.000 3.630 0.000
z 0.000 0.000 12.325


<r2> (average value of r2) Å2
<r2> 198.629
(<r2>)1/2 14.094