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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-166.487598
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 1683 0.17      
2 Σ 1166 1130 4.33      
3 Π 473 459 25.33      
3 Π 463 449 6.69      

Unscaled Zero Point Vibrational Energy (zpe) 1919.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 1860.4 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