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

using model chemistry: B2PLYP=FULL/6-31G**

19 10 17 12 22

States and conformations

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

Conformer 1 (D*H)

Jump to S1C2
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-413.108270
Energy at 298.15K 
HF Energy-413.057100
Nuclear repulsion energy25.464455
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/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 Σg 586 586 0.00      
2 Σu 669 669 309.81      
3 Πu 50i 50i 112.87      
3 Πu 50i 50i 112.87      

Unscaled Zero Point Vibrational Energy (zpe) 577.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 577.2 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/6-31G**
B
0.27543

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=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 2.088
Li3 0.000 0.000 -2.088

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.08852.0885
Li22.08854.1770
Li32.08854.1770

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/6-31G**
 hartrees
Energy at 0K-413.109802
Energy at 298.15K-413.110104
HF Energy-413.057449
Nuclear repulsion energy25.406751
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/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 585 585 18.57      
2 A1 99 99 74.20      
3 B2 643 643 184.95      

Unscaled Zero Point Vibrational Energy (zpe) 663.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 663.3 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/6-31G**
ABC
1.53759 0.36194 0.29298

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.289
Li2 0.000 1.822 -0.771
Li3 0.000 -1.822 -0.771

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10802.1080
Li22.10803.6437
Li32.10803.6437

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 119.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability