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

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-412.480026
Energy at 298.15K 
HF Energy-412.480026
Nuclear repulsion energy25.303573
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 Σg 590 532 0.00      
2 Σu 680 613 360.08      
3 Πu 38i 35i 149.36      
3 Πu 38i 35i 149.36      

Unscaled Zero Point Vibrational Energy (zpe) 596.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 538.2 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 HF/6-31G**
B
0.27196

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/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 2.102
Li3 0.000 0.000 -2.102

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10182.1018
Li22.10184.2035
Li32.10184.2035

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 HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.621      
2 Li 0.311      
3 Li 0.311      


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 -23.642 0.000 0.000
y 0.000 -23.642 0.000
z 0.000 0.000 14.531
Traceless
 xyz
x -19.087 0.000 0.000
y 0.000 -19.087 0.000
z 0.000 0.000 38.173
Polar
3z2-r276.346
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 6.054 0.000 0.000
y 0.000 6.054 0.000
z 0.000 0.000 10.685


<r2> (average value of r2) Å2
<r2> 33.324
(<r2>)1/2 5.773

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-412.480240
Energy at 298.15K-412.480478
HF Energy-412.480240
Nuclear repulsion energy25.282626
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 592 535 15.66      
2 A1 54 49 125.85      
3 B2 670 604 303.20      

Unscaled Zero Point Vibrational Energy (zpe) 658.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 594.1 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 HF/6-31G**
ABC
3.94518 0.29976 0.27860

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.181
Li2 0.000 2.002 -0.481
Li3 0.000 -2.002 -0.481

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10852.1085
Li22.10854.0039
Li32.10854.0039

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 143.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.593      
2 Li 0.297      
3 Li 0.297      


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 -3.858 3.858
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.690 0.000 0.000
y 0.000 11.192 0.000
z 0.000 0.000 -21.581
Traceless
 xyz
x -18.496 0.000 0.000
y 0.000 33.828 0.000
z 0.000 0.000 -15.332
Polar
3z2-r2-30.663
x2-y2-34.882
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.368 0.000 0.000
y 0.000 10.057 0.000
z 0.000 0.000 6.667


<r2> (average value of r2) Å2
<r2> 33.053
(<r2>)1/2 5.749