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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-57.156192
Energy at 298.15K 
HF Energy-57.156192
Nuclear repulsion energy76.848660
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/CEP-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 A1 745 672 116.82 58.20 0.73 0.84
2 A1 354 319 0.04 32.53 0.01 0.03
3 A1 214 193 0.46 20.31 0.29 0.45
4 A1 121 109 0.12 8.76 0.66 0.80
5 A2 166 149 0.00 7.68 0.75 0.86
6 B1 697 628 87.70 57.11 0.75 0.86
7 B1 203 183 1.02 11.97 0.75 0.86
8 B2 759 684 112.66 34.57 0.75 0.86
9 B2 246 222 0.20 11.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1752.0 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 1579.2 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 HF/CEP-31G
ABC
0.03696 0.01705 0.01489

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.631
Cl2 0.000 1.495 1.726
Cl3 0.000 -1.495 1.726
I4 1.811 0.000 -0.589
I5 -1.811 0.000 -0.589

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.85271.85272.18402.1840
Cl21.85272.99003.29753.2975
Cl31.85272.99003.29753.2975
I42.18403.29753.29753.6219
I52.18403.29753.29753.6219

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 107.597 Cl2 C1 I4 109.277
Cl2 C1 I5 109.277 Cl3 C1 I4 109.277
Cl3 C1 I5 109.277 I4 C1 I5 112.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.801      
2 Cl 0.067      
3 Cl 0.067      
4 I 0.333      
5 I 0.333      


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 -1.878 1.878
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.028 0.000 0.000
y 0.000 -73.745 0.000
z 0.000 0.000 -72.453
Traceless
 xyz
x 7.071 0.000 0.000
y 0.000 -4.505 0.000
z 0.000 0.000 -2.567
Polar
3z2-r2-5.133
x2-y27.717
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.678 0.000 0.000
y 0.000 7.457 0.000
z 0.000 0.000 9.523


<r2> (average value of r2) Å2
<r2> 169.538
(<r2>)1/2 13.021