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: CCSD=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-214.672380
Energy at 298.15K 
HF Energy-214.062047
Nuclear repulsion energy51.486043
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=FULL/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD=FULL/cc-pVTZ
ABC
0.99251 0.25218 0.20108

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 1.100 0.000
Li2 0.000 -1.100 0.000
F3 0.000 0.000 1.326
F4 0.000 0.000 -1.326

Atom - Atom Distances (Å)
  Li1 Li2 F3 F4
Li12.20041.72331.7233
Li22.20041.72331.7233
F31.72331.72332.6528
F41.72331.72332.6528

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 79.349 Li1 F4 Li2 79.349
F3 Li1 F4 100.651 F3 Li2 F4 100.651
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability