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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-6982.156057
Energy at 298.15K-6982.153819
HF Energy-6982.156057
Nuclear repulsion energy162.225822
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 PBEPBEultrafine/3-21G
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 2172 2153 9.17      
2 Σ 485 480 0.01      
3 Π 393 389 0.22      
3 Π 393 389 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 1721.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 1705.5 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 PBEPBEultrafine/3-21G
B
0.10302

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.527
C2 0.000 0.000 -1.512
N3 0.000 0.000 -2.695

Atom - Atom Distances (Å)
  I1 C2 N3
I12.03963.2223
C22.03961.1827
N33.22231.1827

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 PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.478      
2 C -0.107      
3 N -0.371      


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 3.118 3.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.887 0.000 0.000
y 0.000 -38.887 0.000
z 0.000 0.000 -44.786
Traceless
 xyz
x 2.950 0.000 0.000
y 0.000 2.950 0.000
z 0.000 0.000 -5.900
Polar
3z2-r2-11.800
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 2.173 0.000 0.000
y 0.000 2.173 0.000
z 0.000 0.000 8.214


<r2> (average value of r2) Å2
<r2> 104.815
(<r2>)1/2 10.238