return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for NCO (isocyanato radical)

using model chemistry: QCISD(TQ)=FULL/6-31+G**

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(TQ)=FULL/6-31+G**
 hartrees
Energy at 0K-167.601648
Energy at 298.15K-167.601498
HF Energy-167.129278
Nuclear repulsion energy51.330265
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(TQ)=FULL/6-31+G**
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 1916 1916        
2 Σ 1252 1252        
3 Π 530 530        
3 Π 470 470        

Unscaled Zero Point Vibrational Energy (zpe) 2084.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2084.1 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 QCISD(TQ)=FULL/6-31+G**
B
0.38045

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.281
C2 0.000 0.000 -0.044
O3 0.000 0.000 1.154

Atom - Atom Distances (Å)
  N1 C2 O3
N11.23742.4352
C21.23741.1978
O32.43521.1978

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