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 LiO2 (Lithium dioxide)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.219608
HF Energy-0.219608
Nuclear repulsion energy36.597165
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 PM3
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1382 1346 7.03 10.07 0.44 0.61
2 A1 782 761 142.19 14.07 0.37 0.54
3 B2 525 511 3.49 8.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1344.3 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 1309.3 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 PM3
ABC
1.27557 1.02099 0.56709

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.426
O2 0.000 0.643 -0.267
O3 0.000 -0.643 -0.267

Atom - Atom Distances (Å)
  Li1 O2 O3
Li11.81181.8118
O21.81181.2855
O31.81181.2855

picture of Lithium dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 O2 O3 69.221 Li1 O3 O2 69.221
O2 Li1 O3 41.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability