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All results from a given calculation for CI4 (tetraiodomethane)

using model chemistry: MP3=FULL/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 MP3=FULL/cc-pVTZ-PP
 hartrees
Energy at 0K-1217.593579
Energy at 298.15K 
HF Energy-1216.470237
Nuclear repulsion energy712.631520
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 MP3=FULL/cc-pVTZ-PP
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 197 197 0.00      
2 E 88 88 0.00      
2 E 88 88 0.00      
3 T2 638 638 17.62      
3 T2 638 638 17.62      
3 T2 638 638 17.62      
4 T2 130 130 0.02      
4 T2 130 130 0.02      
4 T2 130 130 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 1339.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1339.3 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 MP3=FULL/cc-pVTZ-PP
ABC
0.01077 0.01077 0.01077

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/cc-pVTZ-PP

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
I2 1.242 1.242 1.242
I3 -1.242 -1.242 1.242
I4 -1.242 1.242 -1.242
I5 1.242 -1.242 -1.242

Atom - Atom Distances (Å)
  C1 I2 I3 I4 I5
C12.15082.15082.15082.1508
I22.15083.51223.51223.5122
I32.15083.51223.51223.5122
I42.15083.51223.51223.5122
I52.15083.51223.51223.5122

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