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: MP4=FULL/6-311G**

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/6-311G**
 hartrees
Energy at 0K-355.436210
Energy at 298.15K-355.439911
HF Energy-354.268273
Nuclear repulsion energy182.836123
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/6-311G**
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 3792 3646        
2 A 1848 1777        
3 A 1411 1357        
4 A 1302 1252        
5 A 942 906        
6 A 770 740        
7 A 701 674        
8 A 615 591        
9 A 404 388        
10 A 363 349        
11 A 300 288        
12 A 142 137        

Unscaled Zero Point Vibrational Energy (zpe) 6295.1 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 6052.8 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/6-311G**
ABC
0.38606 0.15048 0.10956

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.649 0.086 0.001
O2 -0.651 -0.807 0.049
O3 -1.754 0.044 -0.137
O4 1.620 -0.623 -0.014
O5 0.462 1.273 0.006
H6 -1.961 0.308 0.769

Atom - Atom Distances (Å)
  N1 O2 O3 O4 O5 H6
N11.57802.40681.20251.20132.7300
O21.57801.40522.27952.35931.8651
O32.40681.40523.44122.53750.9663
O41.20252.27953.44122.22143.7823
O51.20132.35932.53752.22142.7178
H62.73001.86510.96633.78232.7178

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 107.426 O2 N1 O4 109.396
O2 N1 O5 115.520 O2 O3 H6 102.114
O4 N1 O5 135.074
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability