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

using model chemistry: B3LYP/6-31+G**

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 B3LYP/6-31+G**
 hartrees
Energy at 0K-413.313031
Energy at 298.15K-413.312959
HF Energy-413.313031
Nuclear repulsion energy25.443965
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 B3LYP/6-31+G**
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 577 556 0.00      
2 Σu 668 644 301.17      
3 Πu 71 69 136.08      
3 Πu 71 69 136.08      

Unscaled Zero Point Vibrational Energy (zpe) 693.6 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 668.8 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 B3LYP/6-31+G**
B
0.27499

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

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 2.090
Li3 0.000 0.000 -2.090

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09022.0902
Li22.09024.1803
Li32.09024.1803

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 B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.421      
2 Li -0.211      
3 Li -0.211      


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 -24.450 0.000 0.000
y 0.000 -24.450 0.000
z 0.000 0.000 13.282
Traceless
 xyz
x -18.866 0.000 0.000
y 0.000 -18.866 0.000
z 0.000 0.000 37.731
Polar
3z2-r275.463
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 7.944 0.000 0.000
y 0.000 7.944 0.000
z 0.000 0.000 12.732


<r2> (average value of r2) Å2
<r2> 33.628
(<r2>)1/2 5.799

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-413.312636
Energy at 298.15K-413.312812
HF Energy-413.312636
Nuclear repulsion energy25.408380
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 B3LYP/6-31+G**
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 575 555 17.27      
2 A1 31 30 101.03      
3 B2 653 629 233.14      

Unscaled Zero Point Vibrational Energy (zpe) 629.5 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 607.0 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 B3LYP/6-31+G**
ABC
3.07596 0.31230 0.28352

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.204
Li2 0.000 1.961 -0.545
Li3 0.000 -1.961 -0.545

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09972.0997
Li22.09973.9227
Li32.09973.9227

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 138.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.183      
2 Li 0.092      
3 Li 0.092      


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 -4.089 4.089
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.496 0.000 0.000
y 0.000 8.839 0.000
z 0.000 0.000 -21.753
Traceless
 xyz
x -18.039 0.000 0.000
y 0.000 31.964 0.000
z 0.000 0.000 -13.925
Polar
3z2-r2-27.850
x2-y2-33.335
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.905 0.000 0.000
y 0.000 12.318 0.000
z 0.000 0.000 9.348


<r2> (average value of r2) Å2
<r2> 33.322
(<r2>)1/2 5.773