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

using model chemistry: HSEh1PBE/aug-cc-pVTZ

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 HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-413.163722
Energy at 298.15K 
HF Energy-413.163722
Nuclear repulsion energy25.748229
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 HSEh1PBE/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 593 570 0.00      
2 Σu 686 660 295.90      
3 Πu 22i 21i 127.97      
3 Πu 22i 21i 127.97      

Unscaled Zero Point Vibrational Energy (zpe) 617.3 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 593.7 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 HSEh1PBE/aug-cc-pVTZ
B
0.28160

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 2.065
Li3 0.000 0.000 -2.065

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.06552.0655
Li22.06554.1309
Li32.06554.1309

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 HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.188      
2 Li 0.094      
3 Li 0.094      


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 -23.662 0.000 0.000
y 0.000 -23.662 0.000
z 0.000 0.000 13.033
Traceless
 xyz
x -18.348 0.000 0.000
y 0.000 -18.348 0.000
z 0.000 0.000 36.695
Polar
3z2-r273.390
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 9.888 0.000 0.000
y 0.000 9.888 0.000
z 0.000 0.000 11.439


<r2> (average value of r2) Å2
<r2> 32.736
(<r2>)1/2 5.722

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HSEh1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-413.163741
Energy at 298.15K-413.163931
HF Energy-413.163741
Nuclear repulsion energy25.729877
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 HSEh1PBE/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 593 571 7.68      
2 A1 23 22 118.77      
3 B2 681 655 260.17      

Unscaled Zero Point Vibrational Energy (zpe) 648.5 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 623.8 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 HSEh1PBE/aug-cc-pVTZ
ABC
6.51177 0.29890 0.28579

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.141
Li2 0.000 2.005 -0.375
Li3 0.000 -2.005 -0.375

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.07002.0700
Li22.07004.0096
Li32.07004.0096

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 151.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.096      
2 Li 0.048      
3 Li 0.048      


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 -2.802 2.802
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.698 0.000 0.000
y 0.000 11.056 0.000
z 0.000 0.000 -22.430
Traceless
 xyz
x -18.010 0.000 0.000
y 0.000 34.120 0.000
z 0.000 0.000 -16.109
Polar
3z2-r2-32.219
x2-y2-34.754
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.970 0.000 0.000
y 0.000 11.137 0.000
z 0.000 0.000 10.057


<r2> (average value of r2) Å2
<r2> 32.576
(<r2>)1/2 5.708