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: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-150.867273
Energy at 298.15K-150.868382
HF Energy-150.867273
Nuclear repulsion energy32.564179
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 B1B95/6-31G(2df,p)
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' 3650 3496 19.56      
2 A' 1469 1406 39.62      
3 A' 1240 1187 31.98      

Unscaled Zero Point Vibrational Energy (zpe) 3179.2 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 3044.7 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 B1B95/6-31G(2df,p)
ABC
20.92719 1.15848 1.09772

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.055 -0.604 0.000
O2 0.055 0.710 0.000
H3 -0.885 -0.849 0.000

Atom - Atom Distances (Å)
  O1 O2 H3
O11.31340.9723
O21.31341.8210
H30.97231.8210

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 104.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.174      
2 O -0.172      
3 H 0.346      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.664 -1.404 0.000 2.178
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.531 1.599 0.000
y 1.599 -10.458 0.000
z 0.000 0.000 -10.614
Traceless
 xyz
x 1.005 1.599 0.000
y 1.599 -0.385 0.000
z 0.000 0.000 -0.620
Polar
3z2-r2-1.240
x2-y20.927
xy1.599
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.250 0.245 0.000
y 0.245 2.142 0.000
z 0.000 0.000 0.940


<r2> (average value of r2) Å2
<r2> 14.828
(<r2>)1/2 3.851