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

using model chemistry: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-6982.941140
Energy at 298.15K-6982.938885
HF Energy-6982.941140
Nuclear repulsion energy163.339870
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 B3LYP/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 2264 2178 4.55      
2 Σ 492 474 0.25      
3 Π 383 368 0.10      
3 Π 383 368 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 1761.2 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 1694.3 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 B3LYP/3-21G*
B
0.10448

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.524
C2 0.000 0.000 -1.506
N3 0.000 0.000 -2.674

Atom - Atom Distances (Å)
  I1 C2 N3
I12.02943.1977
C22.02941.1683
N33.19771.1683

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 B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.286      
2 C 0.123      
3 N -0.409      


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 3.408 3.408
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.862 0.000 0.000
y 0.000 -38.862 0.000
z 0.000 0.000 -44.709
Traceless
 xyz
x 2.924 0.000 0.000
y 0.000 2.924 0.000
z 0.000 0.000 -5.847
Polar
3z2-r2-11.694
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 3.624 0.000 0.000
y 0.000 3.624 0.000
z 0.000 0.000 8.536


<r2> (average value of r2) Å2
<r2> 103.680
(<r2>)1/2 10.182