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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-389.815862
Energy at 298.15K-389.813503
HF Energy-388.978107
Nuclear repulsion energy88.598134
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/Def2TZVPP
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 2093 1992 0.03      
2 Σ 524 499 0.26      
3 Π 322 306 1.00      
3 Π 322 306 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 1630.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 1551.4 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/Def2TZVPP
B
0.10854

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.513
C2 0.000 0.000 -1.458
N3 0.000 0.000 -2.634

Atom - Atom Distances (Å)
  I1 C2 N3
I11.97133.1470
C21.97131.1757
N33.14701.1757

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