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

using model chemistry: B3LYP/CEP-31G

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 B3LYP/CEP-31G
 hartrees
Energy at 0K-26.914153
Energy at 298.15K-26.911756
HF Energy-26.914153
Nuclear repulsion energy21.923590
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 B3LYP/CEP-31G
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 2174 2105 10.93      
2 Σ 475 460 0.52      
3 Π 324 314 0.50      
3 Π 324 314 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 1648.5 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 1596.4 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 B3LYP/CEP-31G
B
0.10339

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.526
C2 0.000 0.000 -1.501
N3 0.000 0.000 -2.695

Atom - Atom Distances (Å)
  I1 C2 N3
I12.02683.2209
C22.02681.1942
N33.22091.1942

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
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.340      
2 C -0.647      
3 N 0.306      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.669 3.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.037 0.000 0.000
y 0.000 -31.037 0.000
z 0.000 0.000 -38.480
Traceless
 xyz
x 3.722 0.000 0.000
y 0.000 3.722 0.000
z 0.000 0.000 -7.444
Polar
3z2-r2-14.887
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.801 0.000 0.000
y 0.000 1.801 0.000
z 0.000 0.000 9.081


<r2> (average value of r2) Å2
<r2> 68.199
(<r2>)1/2 8.258