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

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-349.467116
Energy at 298.15K-349.470737
HF Energy-349.467116
Nuclear repulsion energy182.832236
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 HF/STO-3G
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 4125 3368 12.93      
2 A 1791 1463 209.80      
3 A 1700 1388 31.16      
4 A 1471 1201 28.65      
5 A 1439 1175 41.61      
6 A 1051 858 18.43      
7 A 687 561 22.77      
8 A 606 495 9.43      
9 A 532 434 11.69      
10 A 366 298 24.19      
11 A 300 245 55.66      
12 A 106 86 7.09      

Unscaled Zero Point Vibrational Energy (zpe) 7085.7 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 5785.4 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 HF/STO-3G
ABC
0.37735 0.15597 0.11188

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.576 0.064 0.003
O2 -0.592 -0.818 0.071
O3 -1.701 -0.019 -0.155
O4 1.671 -0.569 -0.024
O5 0.361 1.314 0.010
H6 -1.937 0.294 0.770

Atom - Atom Distances (Å)
  N1 O2 O3 O4 O5 H6
N11.46492.28431.26481.26842.6378
O21.46491.38562.27832.33571.8799
O32.28431.38563.41922.46091.0042
O41.26482.27833.41922.29393.7938
O51.26842.33572.46092.29392.6271
H62.63781.87991.00423.79382.6271

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 106.490 O2 N1 O4 112.947
O2 N1 O5 117.237 O2 O3 H6 102.567
O4 N1 O5 129.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.241      
2 O -0.024      
3 O -0.137      
4 O -0.143      
5 O -0.162      
6 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.798 0.002 1.396 2.276
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.633 -0.272 -2.668
y -0.272 -26.909 0.413
z -2.668 0.413 -21.955
Traceless
 xyz
x -0.201 -0.272 -2.668
y -0.272 -3.615 0.413
z -2.668 0.413 3.816
Polar
3z2-r27.632
x2-y22.276
xy-0.272
xz-2.668
yz0.413


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.609 -0.853 -0.283
y -0.853 2.583 0.130
z -0.283 0.130 0.818


<r2> (average value of r2) Å2
<r2> 93.409
(<r2>)1/2 9.665