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All results from a given calculation for CCl2I2 (dichlorodiiodomethane)

using model chemistry: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-14655.589351
Energy at 298.15K 
HF Energy-14655.589351
Nuclear repulsion energy1253.786200
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 B1B95/STO-3G
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 792 700 157.24 7.35 0.35 0.52
2 A1 354 312 1.23 12.32 0.01 0.02
3 A1 209 185 0.49 6.78 0.36 0.53
4 A1 117 104 0.00 4.39 0.68 0.81
5 A2 156 138 0.00 3.56 0.75 0.86
6 B1 729 644 155.52 4.29 0.75 0.86
7 B1 199 176 1.36 5.19 0.75 0.86
8 B2 814 719 149.12 5.65 0.75 0.86
9 B2 236 208 0.88 5.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1803.0 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 1592.0 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 B1B95/STO-3G
ABC
0.03731 0.01702 0.01488

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.603
Cl2 0.000 1.487 1.721
Cl3 0.000 -1.487 1.721
I4 1.815 0.000 -0.586
I5 -1.815 0.000 -0.586

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 I4 I5
C11.86001.86002.16962.1696
Cl21.86002.97323.29013.2901
Cl31.86002.97323.29013.2901
I42.16963.29013.29013.6297
I52.16963.29013.29013.6297

picture of dichlorodiiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 C1 Cl3 106.120 Cl2 C1 I4 109.229
Cl2 C1 I5 109.229 Cl3 C1 I4 109.229
Cl3 C1 I5 109.229 I4 C1 I5 113.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.091      
2 Cl -0.097      
3 Cl -0.097      
4 I 0.142      
5 I 0.142      


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 -1.555 1.555
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -79.934 0.000 0.000
y 0.000 -84.076 0.000
z 0.000 0.000 -84.199
Traceless
 xyz
x 4.203 0.000 0.000
y 0.000 -2.009 0.000
z 0.000 0.000 -2.194
Polar
3z2-r2-4.387
x2-y24.142
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.562 0.000 0.000
y 0.000 3.981 0.000
z 0.000 0.000 5.318


<r2> (average value of r2) Å2
<r2> 615.202
(<r2>)1/2 24.803