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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: HF/CEP-121G

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-121G
 hartrees
Energy at 0K-57.159437
Energy at 298.15K 
HF Energy-57.159437
Nuclear repulsion energy76.912747
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-121G
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 738 674 109.69 50.59 0.74 0.85
2 A1 355 324 0.01 30.83 0.01 0.03
3 A1 214 196 0.66 18.68 0.30 0.46
4 A1 121 110 0.13 8.21 0.66 0.80
5 A2 166 151 0.00 6.52 0.75 0.86
6 B1 691 630 86.26 50.65 0.75 0.86
7 B1 203 185 1.32 11.40 0.75 0.86
8 B2 754 688 108.63 32.77 0.75 0.86
9 B2 245 223 0.13 9.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1742.8 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 1590.3 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-121G
ABC
0.03700 0.01708 0.01491

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.634
Cl2 0.000 1.494 1.724
Cl3 0.000 -1.494 1.724
I4 1.809 0.000 -0.589
I5 -1.809 0.000 -0.589

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.84951.84952.18392.1839
Cl21.84952.98813.29503.2950
Cl31.84952.98813.29503.2950
I42.18393.29503.29503.6187
I52.18393.29503.29503.6187

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 107.767 Cl2 C1 I4 109.274
Cl2 C1 I5 109.274 Cl3 C1 I4 109.274
Cl3 C1 I5 109.274 I4 C1 I5 111.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.936      
2 Cl 0.102      
3 Cl 0.102      
4 I 0.366      
5 I 0.366      


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 -1.856 1.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -65.848 0.000 0.000
y 0.000 -73.728 0.000
z 0.000 0.000 -72.262
Traceless
 xyz
x 7.148 0.000 0.000
y 0.000 -4.674 0.000
z 0.000 0.000 -2.474
Polar
3z2-r2-4.949
x2-y27.881
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.084 0.000 0.000
y 0.000 7.717 0.000
z 0.000 0.000 9.834


<r2> (average value of r2) Å2
<r2> 169.274
(<r2>)1/2 13.011