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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-14728.120165
Energy at 298.15K 
HF Energy-14727.871450
Nuclear repulsion energy1235.991270
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 CID/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 689 642 73.81      
2 A1 323 301 0.38      
3 A1 203 189 0.71      
4 A1 115 107 0.07      
5 A2 154 144 0.00      
6 B1 689 642 54.17      
7 B1 192 179 1.29      
8 B2 672 626 76.89      
9 B2 228 212 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 1632.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 1521.2 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 CID/3-21G
ABC
0.03605 0.01658 0.01449

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.605
Cl2 0.000 1.514 1.750
Cl3 0.000 -1.514 1.750
I4 1.837 0.000 -0.596
I5 -1.837 0.000 -0.596

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.89831.89832.19452.1945
Cl21.89833.02793.34213.3421
Cl31.89833.02793.34213.3421
I42.19453.34213.34213.6739
I52.19453.34213.34213.6739

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 105.787 Cl2 C1 I4 109.274
Cl2 C1 I5 109.274 Cl3 C1 I4 109.274
Cl3 C1 I5 109.274 I4 C1 I5 113.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability