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

using model chemistry: PBEPBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-214.709474
Energy at 298.15K 
HF Energy-214.709474
Nuclear repulsion energy50.763124
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 640 632 0.00 4.82 0.04 0.07
2 Ag 350 346 0.00 0.42 0.35 0.51
3 B1u 638 630 285.66 0.00 0.00 0.00
4 B2u 540 534 281.69 0.00 0.00 0.00
5 B3g 538 532 0.00 0.49 0.75 0.86
6 B3u 283 280 195.51 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 1494.4 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 1477.4 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/6-31+G**
ABC
0.94588 0.24730 0.19605

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.127 0.000
Li2 0.000 -1.127 0.000
F3 0.000 0.000 1.339
F4 0.000 0.000 -1.339

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.25401.75051.7505
Li22.25401.75051.7505
F31.75051.75052.6788
F41.75051.75052.6788

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 80.155 Li1 F4 Li2 80.155
F3 Li1 F4 99.845 F3 Li2 F4 99.845
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Li 0.572      
2 Li 0.572      
3 F -0.572      
4 F -0.572      


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 -15.203 0.000 0.000
y 0.000 -3.545 0.000
z 0.000 0.000 -27.805
Traceless
 xyz
x 0.472 0.000 0.000
y 0.000 17.959 0.000
z 0.000 0.000 -18.431
Polar
3z2-r2-36.862
x2-y2-11.658
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.458 0.000 0.000
y 0.000 2.894 0.000
z 0.000 0.000 2.450


<r2> (average value of r2) Å2
<r2> 49.605
(<r2>)1/2 7.043