return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

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

Conformer 1 (all bonds equal)

Jump to S1C2
Vibrational Frequencies calculated at B1B95/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at B1B95/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (one short, two long)

Jump to S1C1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-280.255683
Energy at 298.15K-280.257362
Nuclear repulsion energy120.566781
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 B1B95/cc-pVTZ
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 1375 1316 42.25      
2 A1 1138 1089 1.59      
3 A1 171 164 2.10      
4 B1 821 785 13.87      
5 B2 1036 991 10.39      
6 B2 413 395 24.20      

Unscaled Zero Point Vibrational Energy (zpe) 2476.4 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 2370.1 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 B1B95/cc-pVTZ
ABC
0.48736 0.45208 0.23453

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.033
O2 0.000 0.000 1.237
O3 0.000 1.040 -0.633
O4 0.000 -1.040 -0.633

Atom - Atom Distances (Å)
  N1 O2 O3 O4
N11.20331.23501.2350
O21.20332.13922.1392
O31.23502.13922.0797
O41.23502.13922.0797

picture of Nitrogen trioxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 O3 122.647 O2 N1 O4 122.647
O3 N1 O4 114.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.469      
2 O -0.179      
3 O -0.145      
4 O -0.145      


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 -0.105 0.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.738 0.000 0.000
y 0.000 -22.066 0.000
z 0.000 0.000 -22.567
Traceless
 xyz
x 2.579 0.000 0.000
y 0.000 -0.914 0.000
z 0.000 0.000 -1.665
Polar
3z2-r2-3.330
x2-y22.328
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.517 0.000 0.000
y 0.000 4.647 0.000
z 0.000 0.000 4.133


<r2> (average value of r2) Å2
<r2> 49.353
(<r2>)1/2 7.025