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 Li2O (dilithium oxide)

using model chemistry: PBEPBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-90.199466
Energy at 298.15K-90.199733
HF Energy-90.199466
Nuclear repulsion energy17.069831
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 PBEPBE/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 778 771 0.00      
2 Σu 1018 1008 307.28      
3 Πu 115 114 165.00      
3 Πu 115 114 165.00      

Unscaled Zero Point Vibrational Energy (zpe) 1013.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 1003.8 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 PBEPBE/6-311G**
B
0.45354

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.000
Li2 0.000 0.000 1.628
Li3 0.000 0.000 -1.628

Atom - Atom Distances (Å)
  O1 Li2 Li3
O11.62751.6275
Li21.62753.2551
Li31.62753.2551

picture of dilithium oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li2 O1 Li3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.653      
2 Li 0.326      
3 Li 0.326      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.590 0.000 0.000
y 0.000 -13.590 0.000
z 0.000 0.000 8.771
Traceless
 xyz
x -11.181 0.000 0.000
y 0.000 -11.181 0.000
z 0.000 0.000 22.361
Polar
3z2-r244.722
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.860 0.000 0.000
y 0.000 6.860 0.000
z 0.000 0.000 9.771


<r2> (average value of r2) Å2
<r2> 19.726
(<r2>)1/2 4.441