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All results from a given calculation for CI4 (tetraiodomethane)

using model chemistry: CCD/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at CCD/cc-pVTZ-PP
 hartrees
Energy at 0K-1217.484296
Energy at 298.15K 
HF Energy-1216.470349
Nuclear repulsion energy711.064119
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 CCD/cc-pVTZ-PP
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      
2 E 88 88 0.00      
2 E 88 88 0.00      
3 T2 636 636 18.41      
3 T2 636 636 18.41      
3 T2 636 636 18.41      
4 T2 130 130 0.01      
4 T2 130 130 0.01      
4 T2 130 130 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 1332.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1332.7 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 CCD/cc-pVTZ-PP
ABC
0.01072 0.01072 0.01072

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ-PP

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
I2 1.244 1.244 1.244
I3 -1.244 -1.244 1.244
I4 -1.244 1.244 -1.244
I5 1.244 -1.244 -1.244

Atom - Atom Distances (Å)
  C1 I2 I3 I4 I5
C12.15552.15552.15552.1555
I22.15553.51993.51993.5199
I32.15553.51993.51993.5199
I42.15553.51993.51993.5199
I52.15553.51993.51993.5199

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