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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-6980.019620
Energy at 298.15K-6980.017294
HF Energy-6979.670952
Nuclear repulsion energy161.542719
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 MP2=FULL/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 2019 1914 5.46      
2 Σ 495 469 0.05      
3 Π 349 331 0.34      
3 Π 349 331 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 1605.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 1522.1 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 MP2=FULL/3-21G*
B
0.10211

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.529
C2 0.000 0.000 -1.515
N3 0.000 0.000 -2.710

Atom - Atom Distances (Å)
  I1 C2 N3
I12.04413.2389
C22.04411.1948
N33.23891.1948

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