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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-14728.222912
Energy at 298.15K 
HF Energy-14728.222912
Nuclear repulsion energy1266.764949
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/3-21G*
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 771 696 69.87 43.70 0.59 0.74
2 A1 371 335 0.46 19.30 0.01 0.02
3 A1 225 203 0.46 11.09 0.20 0.33
4 A1 118 107 0.06 3.45 0.58 0.74
5 A2 169 153 0.00 2.66 0.75 0.86
6 B1 740 667 41.31 43.35 0.75 0.86
7 B1 207 187 0.80 5.18 0.75 0.86
8 B2 770 695 70.41 17.37 0.75 0.86
9 B2 242 218 0.32 3.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1806.3 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 1630.4 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/3-21G*
ABC
0.03828 0.01740 0.01514

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.659
Cl2 0.000 1.454 1.701
Cl3 0.000 -1.454 1.701
I4 1.799 0.000 -0.583
I5 -1.799 0.000 -0.583

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.78871.78872.18602.1860
Cl21.78872.90763.25083.2508
Cl31.78872.90763.25083.2508
I42.18603.25083.25083.5976
I52.18603.25083.25083.5976

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 108.729 Cl2 C1 I4 109.334
Cl2 C1 I5 109.334 Cl3 C1 I4 109.334
Cl3 C1 I5 109.334 I4 C1 I5 110.743
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.594      
2 Cl 0.075      
3 Cl 0.075      
4 I 0.222      
5 I 0.222      


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 -1.168 1.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -83.174 0.000 0.000
y 0.000 -89.868 0.000
z 0.000 0.000 -88.392
Traceless
 xyz
x 5.956 0.000 0.000
y 0.000 -4.086 0.000
z 0.000 0.000 -1.871
Polar
3z2-r2-3.742
x2-y26.695
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.405 0.000 0.000
y 0.000 10.260 0.000
z 0.000 0.000 11.654


<r2> (average value of r2) Å2
<r2> 606.323
(<r2>)1/2 24.624