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: B2PLYP=FULL/TZVP

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 B2PLYP=FULL/TZVP
 hartrees
Energy at 0K-167.937971
Energy at 298.15K-167.937898
HF Energy-167.768662
Nuclear repulsion energy52.041363
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 B2PLYP=FULL/TZVP
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 2035 1941 117.23      
2 Σ 1286 1227 9.29      
3 Π 584 557 14.01      
3 Π 514 491 43.20      

Unscaled Zero Point Vibrational Energy (zpe) 2209.2 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 2108.1 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 B2PLYP=FULL/TZVP
B
0.39074

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.266
C2 0.000 0.000 -0.039
O3 0.000 0.000 1.137

Atom - Atom Distances (Å)
  N1 C2 O3
N11.22652.4031
C21.22651.1766
O32.40311.1766

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