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: M06-2X/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at M06-2X/6-31G**
 hartrees
Energy at 0K-355.865880
Energy at 298.15K-355.869860
HF Energy-355.865880
Nuclear repulsion energy188.324038
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 M06-2X/6-31G**
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 3789 3601 61.41      
2 A 1898 1803 423.25      
3 A 1472 1399 91.58      
4 A 1438 1367 213.71      
5 A 1087 1033 11.72      
6 A 885 841 160.33      
7 A 789 750 15.74      
8 A 729 693 6.82      
9 A 560 532 5.20      
10 A 400 380 15.56      
11 A 269 256 76.00      
12 A 148 140 30.71      

Unscaled Zero Point Vibrational Energy (zpe) 6731.4 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 6397.5 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 M06-2X/6-31G**
ABC
0.40936 0.16123 0.11720

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.594 0.074 -0.001
O2 -0.572 -0.774 0.081
O3 -1.711 -0.016 -0.148
O4 1.591 -0.578 -0.027
O5 0.406 1.251 0.006
H6 -1.869 0.415 0.709

Atom - Atom Distances (Å)
  N1 O2 O3 O4 O5 H6
N11.44452.31161.19121.19222.5862
O21.44451.38772.17402.25071.8687
O32.31161.38773.35142.47200.9720
O41.19122.17403.35142.17983.6739
O51.19222.25072.47202.17982.5238
H62.58621.86870.97203.67392.5238

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 109.395 O2 N1 O4 110.779
O2 N1 O5 116.892 O2 O3 H6 103.319
O4 N1 O5 132.291
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.789      
2 O -0.189      
3 O -0.271      
4 O -0.343      
5 O -0.357      
6 H 0.371      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.572 0.578 1.503 2.250
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.861 -1.275 -2.986
y -1.275 -29.173 0.773
z -2.986 0.773 -24.652
Traceless
 xyz
x 0.051 -1.275 -2.986
y -1.275 -3.416 0.773
z -2.986 0.773 3.366
Polar
3z2-r26.731
x2-y22.311
xy-1.275
xz-2.986
yz0.773


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.972 -0.642 -0.128
y -0.642 3.782 0.106
z -0.128 0.106 1.887


<r2> (average value of r2) Å2
<r2> 91.308
(<r2>)1/2 9.555