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All results from a given calculation for NCO (isocyanato radical)

using model chemistry: ROMP2/STO-3G

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 ROMP2/STO-3G
 hartrees
Energy at 0K-165.097698
Energy at 298.15K-165.097211
HF Energy-164.904061
Nuclear repulsion energy48.018588
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 ROMP2/STO-3G
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 2201 2201        
2 Σ 919 919        
3 Π 417 417        
3 Π 368 368        

Unscaled Zero Point Vibrational Energy (zpe) 1952.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1952.8 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 ROMP2/STO-3G
B
0.33279

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.343
C2 0.000 0.000 -0.110
O3 0.000 0.000 1.257

Atom - Atom Distances (Å)
  N1 C2 O3
N11.23282.5995
C21.23281.3667
O32.59951.3667

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 ROMP2/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.133      
2 C 0.143      
3 O -0.010      


Electric dipole moments


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 34.834
(<r2>)1/2 5.902