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: B2PLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-150.688003
Energy at 298.15K-150.689081
HF Energy-150.605712
Nuclear repulsion energy30.640788
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 B2PLYP/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' 3482 3482 17.87      
2 A' 1371 1371 45.71      
3 A' 1020 1020 38.46      

Unscaled Zero Point Vibrational Energy (zpe) 2936.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2936.6 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 B2PLYP/6-31G
ABC
20.15717 1.01045 0.96221

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.056 -0.644 0.000
O2 0.056 0.758 0.000
H3 -0.897 -0.908 0.000

Atom - Atom Distances (Å)
  O1 O2 H3
O11.40210.9890
O21.40211.9196
H30.98901.9196

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 105.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.304      
2 O -0.110      
3 H 0.414      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.135 -1.287 0.000 2.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.887 1.933 0.000
y 1.933 -10.959 0.000
z 0.000 0.000 -10.910
Traceless
 xyz
x 1.047 1.933 0.000
y 1.933 -0.560 0.000
z 0.000 0.000 -0.487
Polar
3z2-r2-0.974
x2-y21.071
xy1.933
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.878 0.308 0.000
y 0.308 2.348 0.000
z 0.000 0.000 0.438


<r2> (average value of r2) Å2
<r2> 16.207
(<r2>)1/2 4.026