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

using model chemistry: wB97X-D/aug-cc-pVTZ

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 wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-413.327796
Energy at 298.15K-413.327544
HF Energy-413.327796
Nuclear repulsion energy25.550249
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 wB97X-D/aug-cc-pVTZ
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 575 550 0.00      
2 Σu 665 636 313.31      
3 Πu 24 23 138.00      
3 Πu 24 23 138.00      

Unscaled Zero Point Vibrational Energy (zpe) 643.5 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 615.6 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 wB97X-D/aug-cc-pVTZ
B
0.27730

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

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
S12.08722.0872
Li22.08724.1744
Li32.08724.1744

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 wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.116      
2 Li 0.058      
3 Li 0.058      


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 -23.804 0.000 0.000
y 0.000 -23.804 0.000
z 0.000 0.000 14.364
Traceless
 xyz
x -19.084 0.000 0.000
y 0.000 -19.084 0.000
z 0.000 0.000 38.168
Polar
3z2-r276.335
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 9.949 0.000 0.000
y 0.000 9.949 0.000
z 0.000 0.000 10.817


<r2> (average value of r2) Å2
<r2> 32.915
(<r2>)1/2 5.737

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-413.327783
Energy at 298.15K-413.327928
HF Energy-413.327783
Nuclear repulsion energy25.510845
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 wB97X-D/aug-cc-pVTZ
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 568 544 7.03      
2 A1 15 14 131.60      
3 B2 654 625 289.37      

Unscaled Zero Point Vibrational Energy (zpe) 618.5 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 591.6 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 wB97X-D/aug-cc-pVTZ
ABC
8.72214 0.28902 0.27975

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.441
Li2 0.000 1.313 -1.176
Li3 0.000 -1.313 -1.176

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.08262.0826
Li22.08262.6255
Li32.08262.6255

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 78.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.089      
2 Li 0.045      
3 Li 0.045      


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 -2.522 2.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.840 0.000 0.000
y 0.000 12.903 0.000
z 0.000 0.000 -22.869
Traceless
 xyz
x -18.857 0.000 0.000
y 0.000 36.257 0.000
z 0.000 0.000 -17.400
Polar
3z2-r2-34.801
x2-y2-36.743
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.018 0.000 0.000
y 0.000 10.678 0.000
z 0.000 0.000 10.078


<r2> (average value of r2) Å2
<r2> 32.844
(<r2>)1/2 5.731