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 Li2F2 (Lithium fluoride dimer)

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-214.922277
Energy at 298.15K 
HF Energy-214.922277
Nuclear repulsion energy51.650473
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 TPSSh/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 709 681 0.00 7.65 0.05 0.10
2 Ag 371 356 0.00 0.19 0.49 0.66
3 B1u 706 677 219.36 0.00 0.00 0.00
4 B2u 590 566 288.46 0.00 0.00 0.00
5 B3g 583 559 0.00 1.00 0.75 0.86
6 B3u 291 279 179.01 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1624.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1558.9 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 TPSSh/6-31G*
ABC
0.97937 0.25601 0.20296

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.108 0.000
Li2 0.000 -1.108 0.000
F3 0.000 0.000 1.316
F4 0.000 0.000 -1.316

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.21511.72041.7204
Li22.21511.72041.7204
F31.72041.72042.6329
F41.72041.72042.6329

picture of Lithium fluoride dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 F3 Li2 80.150 Li1 F4 Li2 80.150
F3 Li1 F4 99.850 F3 Li2 F4 99.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Li 0.526      
2 Li 0.526      
3 F -0.526      
4 F -0.526      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.078 0.000 0.000
y 0.000 2.863 0.000
z 0.000 0.000 1.757


<r2> (average value of r2) Å2
<r2> 47.710
(<r2>)1/2 6.907