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All results from a given calculation for CI4 (tetraiodomethane)

using model chemistry: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-27448.414229
Energy at 298.15K 
HF Energy-27448.414229
Nuclear repulsion energy2727.021374
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 BLYP/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 184 170 0.00 19.17 0.00 0.00
2 E 85 79 0.00 4.25 0.75 0.86
2 E 85 79 0.00 4.25 0.75 0.86
3 T2 574 531 136.75 8.26 0.75 0.86
3 T2 574 531 136.75 8.26 0.75 0.86
3 T2 574 531 136.75 8.26 0.75 0.86
4 T2 128 118 0.00 6.70 0.75 0.86
4 T2 128 118 0.00 6.70 0.75 0.86
4 T2 128 118 0.00 6.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1229.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 1137.3 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 BLYP/STO-3G
ABC
0.00984 0.00984 0.00984

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
I2 1.299 1.299 1.299
I3 -1.299 -1.299 1.299
I4 -1.299 1.299 -1.299
I5 1.299 -1.299 -1.299

Atom - Atom Distances (Å)
  C1 I2 I3 I4 I5
C12.24962.24962.24962.2496
I22.24963.67363.67363.6736
I32.24963.67363.67363.6736
I42.24963.67363.67363.6736
I52.24963.67363.67363.6736

picture of tetraiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 C1 I3 109.471 I2 C1 I4 109.471
I2 C1 I5 109.471 I3 C1 I4 109.471
I3 C1 I5 109.471 I4 C1 I5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.255      
2 I 0.064      
3 I 0.064      
4 I 0.064      
5 I 0.064      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -111.206 0.000 0.000
y 0.000 -111.206 0.000
z 0.000 0.000 -111.206
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.607 0.000 0.000
y 0.000 8.607 0.000
z 0.000 0.000 8.607


<r2> (average value of r2) Å2
<r2> 1142.328
(<r2>)1/2 33.798