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

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-166.487806
Energy at 298.15K-166.487595
HF Energy-166.180933
Nuclear repulsion energy50.692823
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/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 1737 1669 0.17      
2 Σ 1166 1121 4.33      
3 Π 473 455 25.33      
3 Π 463 445 6.69      

Unscaled Zero Point Vibrational Energy (zpe) 1919.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 1844.8 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 QCISD/3-21G*
B
0.37155

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.290
C2 0.000 0.000 -0.059
O3 0.000 0.000 1.173

Atom - Atom Distances (Å)
  N1 C2 O3
N11.23082.4635
C21.23081.2327
O32.46351.2327

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