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

using model chemistry: QCISD/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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-167.660307
Energy at 298.15K-167.660258
HF Energy-167.145338
Nuclear repulsion energy51.950956
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 QCISD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 2021 1915 50.45      
2 Σ 1297 1229 5.72      
3 Π 606 574 16.53      
3 Π 531 503 38.45      

Unscaled Zero Point Vibrational Energy (zpe) 2227.5 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 2110.3 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 QCISD/6-31G(2df,p)
B
0.38934

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.269
C2 0.000 0.000 -0.039
O3 0.000 0.000 1.139

Atom - Atom Distances (Å)
  N1 C2 O3
N11.22992.4074
C21.22991.1776
O32.40741.1776

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