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 HOONO2 (peroxy nitric acid)

using model chemistry: CCD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-355.480858
Energy at 298.15K-355.484876
HF Energy-354.339565
Nuclear repulsion energy188.779467
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 CCD/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 A 3822 3569 55.04      
2 A 1889 1764 479.13      
3 A 1488 1389 72.17      
4 A 1415 1321 213.94      
5 A 1066 995 8.35      
6 A 887 829 169.96      
7 A 803 750 13.38      
8 A 734 686 6.78      
9 A 563 525 7.06      
10 A 391 365 27.04      
11 A 301 281 65.29      
12 A 136 127 14.06      

Unscaled Zero Point Vibrational Energy (zpe) 6747.4 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 6300.0 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 CCD/cc-pVTZ
ABC
0.41210 0.16146 0.11754

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.595 0.075 0.000
O2 -0.570 -0.769 0.077
O3 -1.714 -0.006 -0.147
O4 1.579 -0.584 -0.026
O5 0.420 1.246 0.007
H6 -1.891 0.379 0.719

Atom - Atom Distances (Å)
  N1 O2 O3 O4 O5 H6
N11.44122.31561.18461.18392.6058
O21.44121.39272.15992.24631.8636
O32.31561.39273.34582.47950.9640
O41.18462.15993.34582.16653.6774
O51.18392.24632.47952.16652.5693
H62.60581.86360.96403.67742.5693

picture of peroxy nitric acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 O3 109.584 O2 N1 O4 110.309
O2 N1 O5 117.338 O2 O3 H6 103.000
O4 N1 O5 132.324
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability