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: HF/CEP-121G*

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 HF/CEP-121G*
 hartrees
Energy at 0K-30.817766
Energy at 298.15K-30.817761
HF Energy-30.817766
Nuclear repulsion energy26.258317
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 HF/CEP-121G*
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 1893 1710 27.60      
2 Σ 1372 1240 1.31      
3 Π 645 582 28.74      
3 Π 562 508 51.93      

Unscaled Zero Point Vibrational Energy (zpe) 2236.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 2020.1 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 HF/CEP-121G*
B
0.39752

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.256
C2 0.000 0.000 -0.038
O3 0.000 0.000 1.127

Atom - Atom Distances (Å)
  N1 C2 O3
N11.21812.3826
C21.21811.1644
O32.38261.1644

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 HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.138      
2 C 0.332      
3 O -0.194      


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 0.843 0.843
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.498 0.000 0.000
y 0.000 -15.883 0.000
z 0.000 0.000 -20.733
Traceless
 xyz
x 3.810 0.000 0.000
y 0.000 1.733 0.000
z 0.000 0.000 -5.543
Polar
3z2-r2-11.086
x2-y21.385
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.630 0.000 0.000
y 0.000 1.464 0.000
z 0.000 0.000 4.606


<r2> (average value of r2) Å2
<r2> 26.150
(<r2>)1/2 5.114