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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-30.995186
Energy at 298.15K-30.995251
HF Energy-30.717360
Nuclear repulsion energy25.613238
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/CEP-121G
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 1974 1927 75.36      
2 Σ 1327 1296 256.50      
3 Π 736 719 41.11      
3 Π 599 584 83.77      

Unscaled Zero Point Vibrational Energy (zpe) 2318.2 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 2262.6 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/CEP-121G
B
0.37686

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.296
C2 0.000 0.000 -0.023
O3 0.000 0.000 1.151

Atom - Atom Distances (Å)
  N1 C2 O3
N11.27262.4474
C21.27261.1748
O32.44741.1748

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