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

using model chemistry: B3PW91/STO-3G

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 B3PW91/STO-3G
 hartrees
Energy at 0K-6944.598159
Energy at 298.15K-6944.595732
HF Energy-6944.598159
Nuclear repulsion energy164.126435
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 B3PW91/STO-3G
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 2336 2067 0.20      
2 Σ 514 455 2.04      
3 Π 348 308 3.31      
3 Π 348 308 3.31      

Unscaled Zero Point Vibrational Energy (zpe) 1772.4 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 1568.5 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 B3PW91/STO-3G
B
0.10523

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

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 -1.478
N3 0.000 0.000 -2.677

Atom - Atom Distances (Å)
  I1 C2 N3
I11.99863.1978
C21.99861.1992
N33.19781.1992

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 B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.255      
2 C -0.093      
3 N -0.161      


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 2.455 2.455
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.884 0.000 0.000
y 0.000 -35.884 0.000
z 0.000 0.000 -43.646
Traceless
 xyz
x 3.881 0.000 0.000
y 0.000 3.881 0.000
z 0.000 0.000 -7.762
Polar
3z2-r2-15.524
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 0.713 0.000 0.000
y 0.000 0.713 0.000
z 0.000 0.000 5.219


<r2> (average value of r2) Å2
<r2> 101.670
(<r2>)1/2 10.083