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All results from a given calculation for Li2F2 (Lithium fluoride dimer)

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-214.688008
Energy at 298.15K 
HF Energy-214.688008
Nuclear repulsion energy51.369086
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/6-31G*
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 697 687 0.00 13.14 0.05 0.09
2 Ag 366 361 0.00 0.23 0.58 0.73
3 B1u 694 684 203.51 0.00 0.00 0.00
4 B2u 578 570 279.56 0.00 0.00 0.00
5 B3g 571 563 0.00 1.24 0.75 0.86
6 B3u 284 280 165.21 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1595.2 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 1572.4 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 PBEPBE/6-31G*
ABC
0.97618 0.25237 0.20053

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.109 0.000
Li2 0.000 -1.109 0.000
F3 0.000 0.000 1.326
F4 0.000 0.000 -1.326

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.21871.72881.7288
Li22.21871.72881.7288
F31.72881.72882.6518
F41.72881.72882.6518

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 79.838 Li1 F4 Li2 79.838
F3 Li1 F4 100.162 F3 Li2 F4 100.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Li 0.480      
2 Li 0.480      
3 F -0.480      
4 F -0.480      


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 -15.032 0.000 0.000
y 0.000 -4.326 0.000
z 0.000 0.000 -25.686
Traceless
 xyz
x -0.026 0.000 0.000
y 0.000 16.033 0.000
z 0.000 0.000 -16.007
Polar
3z2-r2-32.014
x2-y2-10.706
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.370 0.000 0.000
y 0.000 3.326 0.000
z 0.000 0.000 1.969


<r2> (average value of r2) Å2
<r2> 48.406
(<r2>)1/2 6.957