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

using model chemistry: mPW1PW91/STO-3G

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 mPW1PW91/STO-3G
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/STO-3G
See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (one short, two long)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at mPW1PW91/STO-3G
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/STO-3G
See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (one long, two short)

Jump to S1C1 S1C2
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-276.340566
Energy at 298.15K-276.342249
Nuclear repulsion energy108.719883
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 mPW1PW91/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 A1 1284 1129 42.26      
2 A1 911 800 17.39      
3 A1 506 445 5.56      
4 B1 553 486 2.88      
5 B2 1671 1468 41.86      
6 B2 333 293 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 2628.8 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 2310.4 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 mPW1PW91/STO-3G
ABC
0.38436 0.37558 0.18996

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.113
O2 0.000 0.000 1.382
O3 0.000 1.185 -0.641
O4 0.000 -1.185 -0.641

Atom - Atom Distances (Å)
  N1 O2 O3 O4
N11.49501.29681.2968
O21.49502.34402.3440
O31.29682.34402.3690
O41.29682.34402.3690

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 114.015 O2 N1 O4 114.015
O3 N1 O4 131.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.155      
2 O 0.043      
3 O -0.099      
4 O -0.099      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.817 0.817
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.712 0.000 0.000
y 0.000 -20.187 0.000
z 0.000 0.000 -18.969
Traceless
 xyz
x 1.866 0.000 0.000
y 0.000 -1.846 0.000
z 0.000 0.000 -0.020
Polar
3z2-r2-0.040
x2-y22.475
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.362 0.000 0.000
y 0.000 2.505 0.000
z 0.000 0.000 2.114


<r2> (average value of r2) Å2
<r2> 56.228
(<r2>)1/2 7.499