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

using model chemistry: QCISD(T)/6-311G*

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 QCISD(T)/6-311G*
 hartrees
Energy at 0K-7009.645580
Energy at 298.15K 
HF Energy-7009.116139
Nuclear repulsion energy163.833075
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 QCISD(T)/6-311G*
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 2189 2108        
2 Σ 488 470        
3 Π 301 290        
3 Π 301 290        

Unscaled Zero Point Vibrational Energy (zpe) 1639.5 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 1578.5 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 QCISD(T)/6-311G*
B
0.10507

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.522
C2 0.000 0.000 -1.497
N3 0.000 0.000 -2.669

Atom - Atom Distances (Å)
  I1 C2 N3
I12.01913.1910
C22.01911.1719
N33.19101.1719

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