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: B2PLYP/Def2TZVPP

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 B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-390.332956
Energy at 298.15K-390.330586
HF Energy-390.063737
Nuclear repulsion energy88.412432
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 B2PLYP/Def2TZVPP
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 2199 2199 3.03      
2 Σ 504 504 0.62      
3 Π 323 323 1.05      
3 Π 323 323 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 1675.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1675.0 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 B2PLYP/Def2TZVPP
B
0.10784

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.515
C2 0.000 0.000 -1.474
N3 0.000 0.000 -2.636

Atom - Atom Distances (Å)
  I1 C2 N3
I11.98943.1514
C21.98941.1620
N33.15141.1620

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 B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.263      
2 C -0.201      
3 N -0.061      


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 3.737 3.737
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.562 0.000 0.000
y 0.000 -37.562 0.000
z 0.000 0.000 -44.600
Traceless
 xyz
x 3.519 0.000 0.000
y 0.000 3.519 0.000
z 0.000 0.000 -7.038
Polar
3z2-r2-14.076
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 4.613 0.000 0.000
y 0.000 4.613 0.000
z 0.000 0.000 9.712


<r2> (average value of r2) Å2
<r2> 93.251
(<r2>)1/2 9.657