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

using model chemistry: mPW1PW91/3-21G*

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 mPW1PW91/3-21G*
 hartrees
Energy at 0K-6983.341957
Energy at 298.15K-6983.339729
HF Energy-6983.341957
Nuclear repulsion energy164.300154
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 mPW1PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 2288 2173 6.20      
2 Σ 510 484 0.25      
3 Π 390 370 0.10      
3 Π 390 370 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 1788.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 1698.7 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 mPW1PW91/3-21G*
B
0.10568

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

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 -1.494
N3 0.000 0.000 -2.661

Atom - Atom Distances (Å)
  I1 C2 N3
I12.01443.1812
C22.01441.1668
N33.18121.1668

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 mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.298      
2 C 0.127      
3 N -0.425      


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 3.451 3.451
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.845 0.000 0.000
y 0.000 -38.845 0.000
z 0.000 0.000 -44.675
Traceless
 xyz
x 2.915 0.000 0.000
y 0.000 2.915 0.000
z 0.000 0.000 -5.830
Polar
3z2-r2-11.660
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 3.638 0.000 0.000
y 0.000 3.638 0.000
z 0.000 0.000 8.504


<r2> (average value of r2) Å2
<r2> 102.780
(<r2>)1/2 10.138