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 HO2 (Hydroperoxy radical)

using model chemistry: B1B95/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at B1B95/TZVP
 hartrees
Energy at 0K-150.917418
Energy at 298.15K-150.918524
HF Energy-150.917418
Nuclear repulsion energy32.422788
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 B1B95/TZVP
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' 3645 3487 24.24      
2 A' 1434 1373 29.72      
3 A' 1205 1153 33.73      

Unscaled Zero Point Vibrational Energy (zpe) 3141.9 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 3006.5 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 B1B95/TZVP
ABC
20.94058 1.14683 1.08728

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.055 -0.603 0.000
O2 0.055 0.711 0.000
H3 -0.881 -0.868 0.000

Atom - Atom Distances (Å)
  O1 O2 H3
O11.31440.9730
O21.31441.8360
H30.97301.8360

picture of Hydroperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 O1 H3 105.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.137      
2 O -0.157      
3 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.855 -1.481 0.000 2.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.881 1.712 0.000
y 1.712 -11.022 0.000
z 0.000 0.000 -10.890
Traceless
 xyz
x 1.075 1.712 0.000
y 1.712 -0.637 0.000
z 0.000 0.000 -0.438
Polar
3z2-r2-0.876
x2-y21.141
xy1.712
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.158 0.244 0.000
y 0.244 2.303 0.000
z 0.000 0.000 0.843


<r2> (average value of r2) Å2
<r2> 15.155
(<r2>)1/2 3.893