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All results from a given calculation for ICN (Cyanogen iodide)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.101179
HF Energy0.101179
Nuclear repulsion energy40.179595
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 PM3
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2456 2392 66.79      
2 Σ 669 652 0.13      
3 Π 343 334 0.28      
3 Π 343 334 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 1905.5 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 1856.0 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 PM3
B
0.11485

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.498
C2 0.000 0.000 -1.410
N3 0.000 0.000 -2.565

Atom - Atom Distances (Å)
  I1 C2 N3
I11.90843.0631
C21.90841.1548
N33.06311.1548

picture of Cyanogen iodide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I1 C2 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability