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

using model chemistry: B2PLYP/6-31G*

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 B2PLYP/6-31G*
 hartrees
Energy at 0K-413.103939
Energy at 298.15K 
HF Energy-413.057096
Nuclear repulsion energy25.423777
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 B2PLYP/6-31G*
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 585 555 0.00      
2 Σu 671 637 309.64      
3 Πu 58i 55i 112.79      
3 Πu 58i 55i 112.79      

Unscaled Zero Point Vibrational Energy (zpe) 570.1 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 541.1 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 B2PLYP/6-31G*
B
0.27455

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

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 2.092
Li3 0.000 0.000 -2.092

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.09182.0918
Li22.09184.1837
Li32.09184.1837

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.446      
2 Li 0.223      
3 Li 0.223      


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 -23.990 0.000 0.000
y 0.000 -23.990 0.000
z 0.000 0.000 12.027
Traceless
 xyz
x -18.008 0.000 0.000
y 0.000 -18.008 0.000
z 0.000 0.000 36.016
Polar
3z2-r272.033
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 7.586 0.000 0.000
y 0.000 7.586 0.000
z 0.000 0.000 14.572


<r2> (average value of r2) Å2
<r2> 33.740
(<r2>)1/2 5.809

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-413.105707
Energy at 298.15K-413.106013
HF Energy-413.057411
Nuclear repulsion energy25.373410
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 B2PLYP/6-31G*
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 588 558 19.90      
2 A1 103 98 73.83      
3 B2 643 610 191.37      

Unscaled Zero Point Vibrational Energy (zpe) 666.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 632.8 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 B2PLYP/6-31G*
ABC
1.50395 0.36325 0.29258

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.292
Li2 0.000 1.819 -0.780
Li3 0.000 -1.819 -0.780

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.11112.1111
Li22.11113.6372
Li32.11113.6372

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 118.959
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.411      
2 Li 0.206      
3 Li 0.206      


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 -5.437 5.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.194 0.000 0.000
y 0.000 3.755 0.000
z 0.000 0.000 -18.938
Traceless
 xyz
x -16.603 0.000 0.000
y 0.000 25.321 0.000
z 0.000 0.000 -8.718
Polar
3z2-r2-17.437
x2-y2-27.949
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.436 0.000 0.000
y 0.000 12.613 0.000
z 0.000 0.000 9.320


<r2> (average value of r2) Å2
<r2> 33.057
(<r2>)1/2 5.750