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

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-166.454733
Energy at 298.15K-166.454637
HF Energy-166.182865
Nuclear repulsion energy51.466081
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 CISD/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 1693 1582 0.64      
2 Σ 1315 1228 0.15      
3 Π 536 501 13.67      
3 Π 534 499 32.92      

Unscaled Zero Point Vibrational Energy (zpe) 2039.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 1905.4 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 CISD/3-21G*
B
0.38288

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.272
C2 0.000 0.000 -0.055
O3 0.000 0.000 1.155

Atom - Atom Distances (Å)
  N1 C2 O3
N11.21682.4269
C21.21681.2101
O32.42691.2101

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