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

using model chemistry: HSEh1PBE/aug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-413.146555
Energy at 298.15K 
HF Energy-413.146555
Nuclear repulsion energy25.433764
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-pVDZ
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 572 550 0.00      
2 Σu 668 643 314.42      
3 Πu 83i 80i 121.06      
3 Πu 83i 80i 121.06      

Unscaled Zero Point Vibrational Energy (zpe) 537.1 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 516.8 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-pVDZ
B
0.27477

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

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 2.091
Li3 0.000 0.000 -2.091

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09102.0910
Li22.09104.1820
Li32.09104.1820

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-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.079      
2 Li -0.040      
3 Li -0.040      


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 -24.062 0.000 0.000
y 0.000 -24.062 0.000
z 0.000 0.000 13.740
Traceless
 xyz
x -18.901 0.000 0.000
y 0.000 -18.901 0.000
z 0.000 0.000 37.802
Polar
3z2-r275.604
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 9.523 0.000 0.000
y 0.000 9.523 0.000
z 0.000 0.000 12.135


<r2> (average value of r2) Å2
<r2> 33.392
(<r2>)1/2 5.779

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HSEh1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-413.147760
Energy at 298.15K-413.148026
HF Energy-413.147760
Nuclear repulsion energy25.432902
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-pVDZ
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 582 560 24.58      
2 A1 74 72 100.06      
3 B2 650 626 219.81      

Unscaled Zero Point Vibrational Energy (zpe) 653.1 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 628.4 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-pVDZ
ABC
2.23167 0.33025 0.28768

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.240
Li2 0.000 1.907 -0.640
Li3 0.000 -1.907 -0.640

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.10062.1006
Li22.10063.8146
Li32.10063.8146

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 130.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.029      
2 Li 0.015      
3 Li 0.015      


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 -4.709 4.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.191 0.000 0.000
y 0.000 7.771 0.000
z 0.000 0.000 -20.234
Traceless
 xyz
x -17.959 0.000 0.000
y 0.000 29.984 0.000
z 0.000 0.000 -12.024
Polar
3z2-r2-24.049
x2-y2-31.962
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.889 0.000 0.000
y 0.000 11.191 0.000
z 0.000 0.000 10.076


<r2> (average value of r2) Å2
<r2> 32.838
(<r2>)1/2 5.730