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 LiO (lithium oxide)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Σ
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-81.912567
Energy at 298.15K-81.912446
HF Energy-81.816502
Nuclear repulsion energy8.135725
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 1043 992 69.28      

Unscaled Zero Point Vibrational Energy (zpe) 521.5 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 496.1 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 MP2/3-21G*
B
1.41849

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.426
Li2 0.000 0.000 -1.135

Atom - Atom Distances (Å)
  O1 Li2
O11.5610
Li21.5610

picture of lithium oxide state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability