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: LSDA/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at LSDA/cc-pVDZ
 hartrees
Energy at 0K-150.171313
Energy at 298.15K-150.172414
HF Energy-150.171313
Nuclear repulsion energy32.372967
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 LSDA/cc-pVDZ
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' 3342 3305 8.62      
2 A' 1376 1360 23.72      
3 A' 1180 1167 22.71      

Unscaled Zero Point Vibrational Energy (zpe) 2948.8 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 2916.4 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 LSDA/cc-pVDZ
ABC
19.94008 1.15215 1.08922

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.056 -0.602 0.000
O2 0.056 0.710 0.000
H3 -0.899 -0.862 0.000

Atom - Atom Distances (Å)
  O1 O2 H3
O11.31190.9895
O21.31191.8391
H30.98951.8391

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 105.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.032      
2 O -0.180      
3 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.771 -1.582 0.000 2.375
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -9.577 1.593 0.000
y 1.593 -10.703 0.000
z 0.000 0.000 -10.602
Traceless
 xyz
x 1.076 1.593 0.000
y 1.593 -0.613 0.000
z 0.000 0.000 -0.463
Polar
3z2-r2-0.925
x2-y21.126
xy1.593
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.998 0.294 0.000
y 0.294 1.992 0.000
z 0.000 0.000 0.602


<r2> (average value of r2) Å2
<r2> 14.975
(<r2>)1/2 3.870