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

using model chemistry: B2PLYP=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
1 2 no C2V 1A1

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-413.189889
Energy at 298.15K 
HF Energy-413.101988
Nuclear repulsion energy25.730348
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 B2PLYP=FULL/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 595 570 0.00      
2 Σu 687 659 294.70      
3 Πu 6i 6i 127.35      
3 Πu 6i 6i 127.38      

Unscaled Zero Point Vibrational Energy (zpe) 634.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 609.0 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 B2PLYP=FULL/aug-cc-pVTZ
B
0.28121

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

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 2.067
Li3 0.000 0.000 -2.067

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.06692.0669
Li22.06694.1338
Li32.06694.1338

picture of dilithium sulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li2 S1 Li3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-413.189889
Energy at 298.15K-413.190053
HF Energy-413.101980
Nuclear repulsion energy25.728674
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 B2PLYP=FULL/aug-cc-pVTZ
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 594 570 0.78      
2 A1 9 9 126.37      
3 B2 686 659 290.42      

Unscaled Zero Point Vibrational Energy (zpe) 644.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 618.6 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 B2PLYP=FULL/aug-cc-pVTZ
ABC
59.39964 0.28302 0.28167

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.047
Li2 0.000 2.060 -0.124
Li3 0.000 -2.060 -0.124

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.06742.0674
Li22.06744.1206
Li32.06744.1206

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 170.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability