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

using model chemistry: HSEh1PBE/aug-cc-pV(T+d)Z

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-pV(T+d)Z
 hartrees
Energy at 0K-413.163743
Energy at 298.15K 
HF Energy-413.163743
Nuclear repulsion energy25.749094
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-pV(T+d)Z
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 593 593 0.00      
2 Σu 686 686 296.60      
3 Πu 25i 25i 127.59      
3 Πu 25i 25i 127.59      

Unscaled Zero Point Vibrational Energy (zpe) 614.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 614.5 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-pV(T+d)Z
B
0.28162

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pV(T+d)Z

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 2.075
Li3 0.000 0.000 -2.075

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.07462.0746
Li22.07464.1492
Li32.07464.1492

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-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.185      
2 Li 0.092      
3 Li 0.092      


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 -23.661 0.000 0.000
y 0.000 -23.661 0.000
z 0.000 0.000 13.031
Traceless
 xyz
x -18.346 0.000 0.000
y 0.000 -18.346 0.000
z 0.000 0.000 36.691
Polar
3z2-r273.382
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 9.897 0.000 0.000
y 0.000 9.897 0.000
z 0.000 0.000 11.444


<r2> (average value of r2) Å2
<r2> 32.735
(<r2>)1/2 5.721

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HSEh1PBE/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-413.163790
Energy at 298.15K-413.164051
HF Energy-413.163790
Nuclear repulsion energy25.725501
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-pV(T+d)Z
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 594 594 11.63      
2 A1 27 27 113.79      
3 B2 677 677 245.94      

Unscaled Zero Point Vibrational Energy (zpe) 648.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 648.5 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-pV(T+d)Z
ABC
4.42272 0.30792 0.28787

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.440
Li2 0.000 1.312 -1.173
Li3 0.000 -1.312 -1.173

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.07972.0797
Li22.07972.6248
Li32.07972.6248

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 78.255
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.079      
2 Li 0.039      
3 Li 0.039      


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 -3.396 3.396
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.715 0.000 0.000
y 0.000 10.100 0.000
z 0.000 0.000 -21.841
Traceless
 xyz
x -17.844 0.000 0.000
y 0.000 32.878 0.000
z 0.000 0.000 -15.034
Polar
3z2-r2-30.067
x2-y2-33.815
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.015 0.000 0.000
y 0.000 11.025 0.000
z 0.000 0.000 10.145


<r2> (average value of r2) Å2
<r2> 32.497
(<r2>)1/2 5.701