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

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-214.380090
Energy at 298.15K 
HF Energy-213.982058
Nuclear repulsion energy51.443443
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 CCSD(T)=FULL/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 373 362        
2 Ag 708 688        
3 B1u 727 706        
4 B2u 594 576        
5 B3g 605 588        
6 B3u 297 288        

Unscaled Zero Point Vibrational Energy (zpe) 1652.1 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 1603.7 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 CCSD(T)=FULL/6-31G*
ABC
0.99554 0.25133 0.20067

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.099 0.000
Li2 0.000 -1.099 0.000
F3 0.000 0.000 1.329
F4 0.000 0.000 -1.329

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.19701.72401.7240
Li22.19701.72401.7240
F31.72401.72402.6573
F41.72401.72402.6573

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 79.168 Li1 F4 Li2 79.168
F3 Li1 F4 100.832 F3 Li2 F4 100.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability