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

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G*
 hartrees
Energy at 0K-6982.295943
Energy at 298.15K-6982.293715
HF Energy-6982.295943
Nuclear repulsion energy164.228540
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 HSEh1PBE/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 2286 2195 6.30      
2 Σ 509 488 0.21      
3 Π 390 375 0.10      
3 Π 390 375 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 1787.8 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 1716.1 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 HSEh1PBE/3-21G*
B
0.10558

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.521
C2 0.000 0.000 -1.495
N3 0.000 0.000 -2.662

Atom - Atom Distances (Å)
  I1 C2 N3
I12.01533.1826
C22.01531.1673
N33.18261.1673

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 HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.297      
2 C 0.125      
3 N -0.422      


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 3.438 3.438
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.921 0.000 0.000
y 0.000 -38.921 0.000
z 0.000 0.000 -44.712
Traceless
 xyz
x 2.895 0.000 0.000
y 0.000 2.895 0.000
z 0.000 0.000 -5.791
Polar
3z2-r2-11.581
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 3.647 0.000 0.000
y 0.000 3.647 0.000
z 0.000 0.000 8.528


<r2> (average value of r2) Å2
<r2> 102.887
(<r2>)1/2 10.143