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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-213.715510
Energy at 298.15K 
HF Energy-213.715510
Nuclear repulsion energy52.661783
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 mPW1PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 744 707 0.00 15.24 0.07 0.14
2 Ag 395 375 0.00 0.42 0.53 0.69
3 B1u 687 653 188.70 0.00 0.00 0.00
4 B2u 630 599 265.39 0.00 0.00 0.00
5 B3g 608 578 0.00 0.33 0.75 0.86
6 B3u 299 284 187.15 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1682.2 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 1597.4 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 mPW1PW91/3-21G*
ABC
0.94854 0.27492 0.21315

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.125 0.000
Li2 0.000 -1.125 0.000
F3 0.000 0.000 1.270
F4 0.000 0.000 -1.270

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.25081.69711.6971
Li22.25081.69711.6971
F31.69711.69712.5407
F41.69711.69712.5407

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 83.077 Li1 F4 Li2 83.077
F3 Li1 F4 96.923 F3 Li2 F4 96.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Li 0.450      
2 Li 0.450      
3 F -0.450      
4 F -0.450      


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 -14.737 0.000 0.000
y 0.000 -4.241 0.000
z 0.000 0.000 -25.193
Traceless
 xyz
x -0.020 0.000 0.000
y 0.000 15.724 0.000
z 0.000 0.000 -15.704
Polar
3z2-r2-31.408
x2-y2-10.495
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.642 0.000 0.000
y 0.000 3.080 0.000
z 0.000 0.000 1.474


<r2> (average value of r2) Å2
<r2> 45.843
(<r2>)1/2 6.771