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

using model chemistry: B1B95/6-31G**

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 B1B95/6-31G**
 hartrees
Energy at 0K-413.313774
Energy at 298.15K 
HF Energy-413.313774
Nuclear repulsion energy25.488567
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 B1B95/6-31G**
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 573 547 0.00      
2 Σu 662 632 318.95      
3 Πu 65i 62i 119.44      
3 Πu 65i 62i 119.44      

Unscaled Zero Point Vibrational Energy (zpe) 553.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 528.1 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 B1B95/6-31G**
B
0.27595

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

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 2.087
Li3 0.000 0.000 -2.087

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.08652.0865
Li22.08654.1730
Li32.08654.1730

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 B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.480      
2 Li 0.240      
3 Li 0.240      


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 -23.626 0.000 0.000
y 0.000 -23.626 0.000
z 0.000 0.000 12.590
Traceless
 xyz
x -18.108 0.000 0.000
y 0.000 -18.108 0.000
z 0.000 0.000 36.216
Polar
3z2-r272.431
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 7.325 0.000 0.000
y 0.000 7.325 0.000
z 0.000 0.000 13.825


<r2> (average value of r2) Å2
<r2> 33.338
(<r2>)1/2 5.774

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-413.314788
Energy at 298.15K-413.315045
HF Energy-413.314788
Nuclear repulsion energy25.437194
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 B1B95/6-31G**
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 577 551 19.85      
2 A1 78 74 87.52      
3 B2 639 610 219.26      

Unscaled Zero Point Vibrational Energy (zpe) 647.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 617.9 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 B1B95/6-31G**
ABC
1.93271 0.34094 0.28981

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.258
Li2 0.000 1.877 -0.688
Li3 0.000 -1.877 -0.688

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10192.1019
Li22.10193.7543
Li32.10193.7543

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 126.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.444      
2 Li 0.222      
3 Li 0.222      


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 -4.944 4.944
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.781 0.000 0.000
y 0.000 6.132 0.000
z 0.000 0.000 -19.648
Traceless
 xyz
x -17.024 0.000 0.000
y 0.000 27.847 0.000
z 0.000 0.000 -10.823
Polar
3z2-r2-21.646
x2-y2-29.914
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.006 0.000 0.000
y 0.000 12.377 0.000
z 0.000 0.000 8.586


<r2> (average value of r2) Å2
<r2> 32.810
(<r2>)1/2 5.728