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 CN (Cyano radical)

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 2Σ
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-92.692786
Energy at 298.15K-92.691532
HF Energy-92.692786
Nuclear repulsion energy19.078504
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 2166 2085 21.03      

Unscaled Zero Point Vibrational Energy (zpe) 1083.0 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 1042.6 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
1.92223

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)
C1 0.000 0.000 -0.627
N2 0.000 0.000 0.538

Atom - Atom Distances (Å)
  C1 N2
C11.1649
N21.1649

picture of Cyano radical state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.189      
2 N -0.189      


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 -1.386 1.386
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.830 0.000 0.000
y 0.000 -10.830 0.000
z 0.000 0.000 -10.370
Traceless
 xyz
x -0.230 0.000 0.000
y 0.000 -0.230 0.000
z 0.000 0.000 0.460
Polar
3z2-r20.920
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 1.996 0.000 0.000
y 0.000 1.996 0.000
z 0.000 0.000 3.649


<r2> (average value of r2) Å2
<r2> 11.053
(<r2>)1/2 3.325