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All results from a given calculation for CI4 (tetraiodomethane)

using model chemistry: TPSSh/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 TPSSh/STO-3G
 hartrees
Energy at 0K-27448.161348
Energy at 298.15K 
HF Energy-27448.161348
Nuclear repulsion energy2762.859025
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 TPSSh/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 195 195 0.00 17.08 0.00 0.00
2 E 88 88 0.00 3.84 0.75 0.86
2 E 88 88 0.00 3.84 0.75 0.86
3 T2 635 635 128.13 10.70 0.75 0.86
3 T2 635 635 128.13 10.70 0.75 0.86
3 T2 635 635 128.13 10.70 0.75 0.86
4 T2 133 133 0.08 5.72 0.75 0.86
4 T2 133 133 0.08 5.72 0.75 0.86
4 T2 133 133 0.08 5.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1336.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1336.9 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 TPSSh/STO-3G
ABC
0.01010 0.01010 0.01010

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
I2 1.282 1.282 1.282
I3 -1.282 -1.282 1.282
I4 -1.282 1.282 -1.282
I5 1.282 -1.282 -1.282

Atom - Atom Distances (Å)
  C1 I2 I3 I4 I5
C12.22042.22042.22042.2204
I22.22043.62593.62593.6259
I32.22043.62593.62593.6259
I42.22043.62593.62593.6259
I52.22043.62593.62593.6259

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 TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.259      
2 I 0.065      
3 I 0.065      
4 I 0.065      
5 I 0.065      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.076 0.000 0.000
y 0.000 8.076 0.000
z 0.000 0.000 8.076


<r2> (average value of r2) Å2
<r2> 1114.974
(<r2>)1/2 33.391