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: PBE1PBE/daug-cc-pVDZ

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 PBE1PBE/daug-cc-pVDZ
 hartrees
Energy at 0K-92.612451
Energy at 298.15K-92.611197
HF Energy-92.612451
Nuclear repulsion energy18.985096
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 PBE1PBE/daug-cc-pVDZ
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 2172 21.70      

Unscaled Zero Point Vibrational Energy (zpe) 1086.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1086.0 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 PBE1PBE/daug-cc-pVDZ
B
1.90345

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/daug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.630
N2 0.000 0.000 0.540

Atom - Atom Distances (Å)
  C1 N2
C11.1707
N21.1707

picture of Cyano radical state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.371      
2 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 -1.486 1.486
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.050 0.000 0.000
y 0.000 -11.050 0.000
z 0.000 0.000 -10.381
Traceless
 xyz
x -0.335 0.000 0.000
y 0.000 -0.335 0.000
z 0.000 0.000 0.669
Polar
3z2-r21.338
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 2.671 0.000 0.000
y 0.000 2.671 0.000
z 0.000 0.000 3.874


<r2> (average value of r2) Å2
<r2> 11.190
(<r2>)1/2 3.345