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All results from a given calculation for HOONO2 (peroxy nitric acid)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-352.900840
Energy at 298.15K-352.904024
HF Energy-352.135354
Nuclear repulsion energy171.108148
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 MP4=FULL/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3353 3282        
2 A 1613 1579        
3 A 1298 1270        
4 A 1063 1041        
5 A 912 893        
6 A 667 652        
7 A 563 551        
8 A 489 479        
9 A 367 359        
10 A 289 283        
11 A 223 218        
12 A 118 115        

Unscaled Zero Point Vibrational Energy (zpe) 5476.8 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 5360.7 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 MP4=FULL/3-21G
ABC
0.33835 0.13334 0.09672

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.700 0.092 0.003
O2 -0.732 -0.943 0.037
O3 -1.815 0.085 -0.137
O4 1.778 -0.597 -0.011
O5 0.409 1.337 0.006
H6 -2.013 0.306 0.822

Atom - Atom Distances (Å)
  N1 O2 O3 O4 O5 H6
N11.76692.51891.27991.27872.8417
O21.76691.50382.53442.54991.9539
O32.51891.50383.66002.55651.0041
O41.27992.53443.66002.36983.9852
O51.27872.54992.55652.36982.7557
H62.84171.95391.00413.98522.7557

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 100.426 O2 N1 O4 111.576
O2 N1 O5 112.714 O2 O3 H6 100.457
O4 N1 O5 135.708
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability