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

using model chemistry: PBEPBE/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 PBEPBE/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-413.100962
Energy at 298.15K 
HF Energy-413.100962
Nuclear repulsion energy25.664068
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 PBEPBE/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 582 582 0.00      
2 Σu 673 673 268.89      
3 Πu 32i 32i 116.45      
3 Πu 32i 32i 116.45      

Unscaled Zero Point Vibrational Energy (zpe) 595.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 595.2 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 PBEPBE/aug-cc-pV(T+d)Z
B
0.27976

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/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 2.080
Li3 0.000 0.000 -2.080

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.08012.0801
Li22.08014.1602
Li32.08014.1602

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 PBEPBE/aug-cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.118      
2 Li 0.059      
3 Li 0.059      


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 -24.036 0.000 0.000
y 0.000 -24.036 0.000
z 0.000 0.000 12.279
Traceless
 xyz
x -18.158 0.000 0.000
y 0.000 -18.158 0.000
z 0.000 0.000 36.316
Polar
3z2-r272.631
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 11.061 0.000 0.000
y 0.000 11.061 0.000
z 0.000 0.000 13.152


<r2> (average value of r2) Å2
<r2> 33.217
(<r2>)1/2 5.763

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-413.100965
Energy at 298.15K 
HF Energy-413.100965
Nuclear repulsion energy25.663769
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 PBEPBE/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 582 582 0.10      
2 A1 31i 31i 116.31      
3 B2 673 673 268.22      

Unscaled Zero Point Vibrational Energy (zpe) 611.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 611.9 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 PBEPBE/aug-cc-pV(T+d)Z
ABC
360.30251 0.28006 0.27984

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.019
Li2 0.000 2.079 -0.051
Li3 0.000 -2.079 -0.051

Atom - Atom Distances (Å)
  S1 Li2 Li3
S12.08022.0802
Li22.08024.1579
Li32.08024.1579

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 176.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.115      
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 -0.359 0.359
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.037 0.000 0.000
y 0.000 12.245 0.000
z 0.000 0.000 -24.015
Traceless
 xyz
x -18.152 0.000 0.000
y 0.000 36.271 0.000
z 0.000 0.000 -18.119
Polar
3z2-r2-36.238
x2-y2-36.281
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.062 0.000 0.000
y 0.000 13.145 0.000
z 0.000 0.000 11.064


<r2> (average value of r2) Å2
<r2> 33.214
(<r2>)1/2 5.763