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/cc-pVTZ-PP

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/cc-pVTZ-PP
 hartrees
Energy at 0K-388.243252
Energy at 298.15K 
HF Energy-388.061386
Nuclear repulsion energy88.105797
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/cc-pVTZ-PP
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 2.25      
2 Σ 505 505 0.63      
3 Π 321 321 0.95      
3 Π 321 321 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 1673.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1673.4 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/cc-pVTZ-PP
B
0.10704

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ-PP

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 -1.482
N3 0.000 0.000 -2.645

Atom - Atom Distances (Å)
  I1 C2 N3
I11.99943.1619
C21.99941.1626
N33.16191.1626

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/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.228      
2 C -0.192      
3 N -0.036      


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 3.670 3.670
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.785 0.000 0.000
y 0.000 -37.785 0.000
z 0.000 0.000 -44.498
Traceless
 xyz
x 3.357 0.000 0.000
y 0.000 3.357 0.000
z 0.000 0.000 -6.713
Polar
3z2-r2-13.426
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 4.578 0.000 0.000
y 0.000 4.578 0.000
z 0.000 0.000 9.376


<r2> (average value of r2) Å2
<r2> 93.831
(<r2>)1/2 9.687