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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-6979.868064
Energy at 298.15K-6979.865764
HF Energy-6979.603522
Nuclear repulsion energy160.516792
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 MP4/3-21G
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 2059 1997        
2 Σ 477 463        
3 Π 365 354        
3 Π 365 354        

Unscaled Zero Point Vibrational Energy (zpe) 1633.6 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 1584.3 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 MP4/3-21G
B
0.10089

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.533
C2 0.000 0.000 -1.531
N3 0.000 0.000 -2.722

Atom - Atom Distances (Å)
  I1 C2 N3
I12.06403.2547
C22.06401.1907
N33.25471.1907

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