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

using model chemistry: PBE1PBE/3-21G*

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 PBE1PBE/3-21G*
 hartrees
Energy at 0K-166.875671
Energy at 298.15K-166.875551
HF Energy-166.875671
Nuclear repulsion energy51.343643
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/3-21G*
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 1862 1788 6.02      
2 Σ 1256 1206 7.25      
3 Π 532 511 8.30      
3 Π 508 488 29.41      

Unscaled Zero Point Vibrational Energy (zpe) 2079.5 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 1995.9 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/3-21G*
B
0.38091

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.277
C2 0.000 0.000 -0.051
O3 0.000 0.000 1.156

Atom - Atom Distances (Å)
  N1 C2 O3
N11.22612.4334
C21.22611.2073
O32.43341.2073

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 PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.339      
2 C 0.698      
3 O -0.359      


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