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 NCO (isocyanato radical)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-168.019899
Energy at 298.15K-168.019827
HF Energy-168.019899
Nuclear repulsion energy51.821485
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 TPSSh/6-31G(2df,p)
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 1993 1923 49.43      
2 Σ 1284 1239 7.87      
3 Π 596 576 13.46      
4 Π 509 491 35.13      

Unscaled Zero Point Vibrational Energy (zpe) 2191.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 2114.6 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 TPSSh/6-31G(2df,p)
B
0.38749

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.266
C2 0.000 0.000 -0.061
O3 0.000 0.000 1.154

Atom - Atom Distances (Å)
  N1 C2 O3
N11.20442.4193
C21.20441.2149
O32.41931.2149

picture of isocyanato radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.389      
2 C 0.598      
3 O -0.210      


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 0.768 0.768
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.671 0.000 0.000
y 0.000 1.744 0.000
z 0.000 0.000 4.254


<r2> (average value of r2) Å2
<r2> 32.017
(<r2>)1/2 5.658