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

using model chemistry: M06-2X/3-21G*

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 M06-2X/3-21G*
 hartrees
Energy at 0K-411.303481
Energy at 298.15K 
HF Energy-411.303481
Nuclear repulsion energy25.309428
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 M06-2X/3-21G*
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 581 550 0.00      
2 Σu 668 633 357.21      
3 Πu 40i 38i 124.38      
4 Πu 40i 38i 124.38      

Unscaled Zero Point Vibrational Energy (zpe) 584.6 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 553.7 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 M06-2X/3-21G*
B
0.27209

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

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 2.101
Li3 0.000 0.000 -2.101

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10132.1013
Li22.10134.2026
Li32.10134.2026

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 M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.784      
2 Li 0.392      
3 Li 0.392      


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 -23.775 0.000 0.000
y 0.000 -23.775 0.000
z 0.000 0.000 12.550
Traceless
 xyz
x -18.163 0.000 0.000
y 0.000 -18.163 0.000
z 0.000 0.000 36.326
Polar
3z2-r272.652
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 6.726 0.000 0.000
y 0.000 6.726 0.000
z 0.000 0.000 13.863


<r2> (average value of r2) Å2
<r2> 33.779
(<r2>)1/2 5.812

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-411.303474
Energy at 298.15K-411.303718
HF Energy-411.303474
Nuclear repulsion energy25.273757
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 M06-2X/3-21G*
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 585 554 22.55      
2 A1 68 64 83.67      
3 B2 641 607 243.60      

Unscaled Zero Point Vibrational Energy (zpe) 647.0 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 612.9 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 M06-2X/3-21G*
ABC
1.76511 0.34318 0.28732

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.270
Li2 0.000 1.871 -0.720
Li3 0.000 -1.871 -0.720

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.11662.1166
Li22.11663.7421
Li32.11663.7421

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 124.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.751      
2 Li 0.376      
3 Li 0.376      


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 -5.302 5.302
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.898 0.000 0.000
y 0.000 5.423 0.000
z 0.000 0.000 -19.513
Traceless
 xyz
x -16.853 0.000 0.000
y 0.000 27.128 0.000
z 0.000 0.000 -10.276
Polar
3z2-r2-20.551
x2-y2-29.321
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.497 0.000 0.000
y 0.000 12.041 0.000
z 0.000 0.000 8.191


<r2> (average value of r2) Å2
<r2> 33.187
(<r2>)1/2 5.761