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

using model chemistry: HF/SDD

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 HF/SDD
 hartrees
Energy at 0K-103.415820
Energy at 298.15K-103.413559
HF Energy-103.415820
Nuclear repulsion energy38.480799
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 HF/SDD
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 2465 2220 8.84 77.08 0.20 0.34
2 Σ 512 461 11.28 7.48 0.30 0.46
3 Π 374 337 0.86 0.62 0.75 0.86
3 Π 374 337 0.86 0.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1862.4 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 1676.9 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 HF/SDD
B
0.10623

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.519
C2 0.000 0.000 -1.497
N3 0.000 0.000 -2.650

Atom - Atom Distances (Å)
  I1 C2 N3
I12.01643.1693
C22.01641.1530
N33.16931.1530

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 HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.398      
2 C -0.367      
3 N -0.032      


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 3.827 3.827
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.631 0.000 0.000
y 0.000 -31.631 0.000
z 0.000 0.000 -39.335
Traceless
 xyz
x 3.852 0.000 0.000
y 0.000 3.852 0.000
z 0.000 0.000 -7.704
Polar
3z2-r2-15.408
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 1.331 0.000 0.000
y 0.000 1.331 0.000
z 0.000 0.000 8.228


<r2> (average value of r2) Å2
<r2> 85.847
(<r2>)1/2 9.265