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

using model chemistry: B97D3/TZVP

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 B97D3/TZVP
 hartrees
Energy at 0K-413.327672
Energy at 298.15K-413.327387
HF Energy-413.327672
Nuclear repulsion energy25.348870
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 B97D3/TZVP
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 569 560 0.00      
2 Σu 658 649 273.75      
3 Πu 18 17 126.75      
3 Πu 18 17 126.75      

Unscaled Zero Point Vibrational Energy (zpe) 631.0 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 621.9 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 B97D3/TZVP
B
0.27294

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

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 2.098
Li3 0.000 0.000 -2.098

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09802.0980
Li22.09804.1960
Li32.09804.1960

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
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.871      
2 Li 0.435      
3 Li 0.435      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.757 0.000 0.000
y 0.000 -22.757 0.000
z 0.000 0.000 13.702
Traceless
 xyz
x -18.229 0.000 0.000
y 0.000 -18.229 0.000
z 0.000 0.000 36.459
Polar
3z2-r272.917
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.049 0.000 0.000
y 0.000 6.049 0.000
z 0.000 0.000 11.294


<r2> (average value of r2) Å2
<r2> 33.033
(<r2>)1/2 5.747

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-413.328047
Energy at 298.15K-413.328273
HF Energy-413.328047
Nuclear repulsion energy25.258752
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 B97D3/TZVP
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 564 556 23.48      
2 A1 65 64 93.48      
3 B2 630 621 174.57      

Unscaled Zero Point Vibrational Energy (zpe) 629.4 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 620.4 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 B97D3/TZVP
ABC
1.83262 0.33939 0.28636

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.265
Li2 0.000 1.881 -0.706
Li3 0.000 -1.881 -0.706

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.11732.1173
Li22.11733.7629
Li32.11733.7629

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 125.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.906      
2 Li 0.453      
3 Li 0.453      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -5.321 5.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.050 0.000 0.000
y 0.000 6.458 0.000
z 0.000 0.000 -18.656
Traceless
 xyz
x -16.951 0.000 0.000
y 0.000 27.311 0.000
z 0.000 0.000 -10.361
Polar
3z2-r2-20.721
x2-y2-29.508
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.411 0.000 0.000
y 0.000 11.099 0.000
z 0.000 0.000 7.665


<r2> (average value of r2) Å2
<r2> 32.693
(<r2>)1/2 5.718