return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3PW91/6-311G*

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 B3PW91/6-311G*
 hartrees
Energy at 0K-7012.426643
Energy at 298.15K 
HF Energy-7012.426643
Nuclear repulsion energy165.510097
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 B3PW91/6-311G*
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 2287 2202 12.27      
2 Σ 507 488 0.32      
3 Π 329 316 1.24      
3 Π 329 316 1.24      

Unscaled Zero Point Vibrational Energy (zpe) 1725.5 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 1661.2 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 B3PW91/6-311G*
B
0.10725

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.517
C2 0.000 0.000 -1.484
N3 0.000 0.000 -2.641

Atom - Atom Distances (Å)
  I1 C2 N3
I12.00033.1575
C22.00031.1571
N33.15751.1571

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 B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.285      
2 C -0.047      
3 N -0.238      


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 3.552 3.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.850 0.000 0.000
y 0.000 -38.850 0.000
z 0.000 0.000 -45.130
Traceless
 xyz
x 3.140 0.000 0.000
y 0.000 3.140 0.000
z 0.000 0.000 -6.280
Polar
3z2-r2-12.561
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 3.610 0.000 0.000
y 0.000 3.610 0.000
z 0.000 0.000 9.077


<r2> (average value of r2) Å2
<r2> 101.745
(<r2>)1/2 10.087