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All results from a given calculation for Li2S (dilithium sulfide)

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Vibrational Frequencies calculated at HF/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G*
B
0.27424

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.000
Li2 0.000 0.000 2.093
Li3 0.000 0.000 -2.093

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09302.0930
Li22.09304.1860
Li32.09304.1860

picture of dilithium sulfide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at G2
 hartrees
Energy at 0K-412.755187
Energy at 298.15K-412.755504
HF Energy-412.480240
Nuclear repulsion energy25.280939
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 HF/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 A1 592 558 15.66      
2 A1 54 51 125.85      
3 B2 670 631 303.20      

Unscaled Zero Point Vibrational Energy (zpe) 658.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 620.1 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 MP2=FULL/6-31G*
ABC
1.28635 0.38267 0.29493

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.316
Li2 0.000 1.772 -0.843
Li3 0.000 -1.772 -0.843

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.11742.1174
Li22.11743.5437
Li32.11743.5437

picture of dilithium sulfide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li2 S1 Li3 77.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability