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All results from a given calculation for NO3 (Nitrogen trioxide)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes one long, two short 2B2

Conformer 1 (all bonds equal)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at CISD/6-31G*
Rotational Constants (cm-1) from geometry optimized at CISD/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (one short, two long)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at CISD/6-31G*
Rotational Constants (cm-1) from geometry optimized at CISD/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (one long, two short)

Jump to S1C1 S1C2
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-279.404701
Energy at 298.15K-279.406955
HF Energy-278.814104
Nuclear repulsion energy118.666306
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/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1490 1379 173.30      
2 A1 1011 936 66.15      
3 A1 684 634 4.51      
4 B1 813 752 21.80      
5 B2 1878 1739 493.69      
6 B2 504 466 6.60      

Unscaled Zero Point Vibrational Energy (zpe) 3190.0 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 2953.3 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 CISD/6-31G*
ABC
0.46549 0.44161 0.22662

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.100
O2 0.000 0.000 1.255
O3 0.000 1.092 -0.583
O4 0.000 -1.092 -0.583

Atom - Atom Distances (Å)
  N1 O2 O3 O4
N11.35531.19441.1944
O21.35532.13832.1383
O31.19442.13832.1848
O41.19442.13832.1848

picture of Nitrogen trioxide state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 O3 113.852 O2 N1 O4 113.852
O3 N1 O4 132.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability