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

using model chemistry: MP2/3-21G

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 MP2/3-21G
 hartrees
Energy at 0K-166.464219
Energy at 298.15K-166.464226
HF Energy-166.179859
Nuclear repulsion energy51.730115
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 MP2/3-21G
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 1825 1742 32.32      
2 Σ 1394 1331 18.44      
3 Π 629 600 22.24      
3 Π 592 565 59.12      

Unscaled Zero Point Vibrational Energy (zpe) 2219.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 2118.3 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 MP2/3-21G
B
0.38567

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.277
C2 0.000 0.000 -0.034
O3 0.000 0.000 1.142

Atom - Atom Distances (Å)
  N1 C2 O3
N11.24312.4190
C21.24311.1759
O32.41901.1759

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