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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-165.068238
Energy at 298.15K-165.068077
HF Energy-164.931111
Nuclear repulsion energy49.959586
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/STO-3G
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 2567 2238 5.94      
2 Σ 943 822 12.11      
3 Π 644 562 14.78      
3 Π 547 477 9.62      

Unscaled Zero Point Vibrational Energy (zpe) 2350.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 2049.5 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/STO-3G
B
0.35971

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.287
C2 0.000 0.000 -0.116
O3 0.000 0.000 1.213

Atom - Atom Distances (Å)
  N1 C2 O3
N11.17072.4993
C21.17071.3286
O32.49931.3286

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