return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for S2 (Sulfur diatomic)

using model chemistry: LSDA/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
2 1 yes D*H 1Σ

State 1 (3Σg)

Jump to S2C1
Energy calculated at LSDA/STO-3G
 hartrees
Energy at 0K-785.379164
Energy at 298.15K-785.379086
Nuclear repulsion energy69.502339
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 LSDA/STO-3G
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 797 714 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 398.6 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 357.0 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 LSDA/STO-3G
B
0.27757

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.975
S2 0.000 0.000 -0.975

Atom - Atom Distances (Å)
  S1 S2
S11.9491
S21.9491

picture of Sulfur diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.000      
2 S 0.000      


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 -21.196 0.000 0.000
y 0.000 -21.196 0.000
z 0.000 0.000 -22.093
Traceless
 xyz
x 0.448 0.000 0.000
y 0.000 0.448 0.000
z 0.000 0.000 -0.897
Polar
3z2-r2-1.794
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 0.634 0.000 0.000
y 0.000 0.634 0.000
z 0.000 0.000 3.911


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000

State 2 (1Σ)

Jump to S1C1
Energy calculated at LSDA/STO-3G
 hartrees
Energy at 0K-785.337393
Energy at 298.15K-785.337312
Nuclear repulsion energy69.344627
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 LSDA/STO-3G
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 791 709 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 395.6 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 354.3 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 LSDA/STO-3G
B
0.27631

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.977
S2 0.000 0.000 -0.977

Atom - Atom Distances (Å)
  S1 S2
S11.9536
S21.9536

picture of Sulfur diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.000      
2 S 0.000      


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 -19.382 0.000 0.000
y 0.000 -23.012 0.000
z 0.000 0.000 -22.075
Traceless
 xyz
x 3.162 0.000 0.000
y 0.000 -2.284 0.000
z 0.000 0.000 -0.878
Polar
3z2-r2-1.756
x2-y23.630
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.995 0.000 0.000
y 0.000 0.108 0.000
z 0.000 0.000 3.705


<r2> (average value of r2) Å2
<r2> 43.954
(<r2>)1/2 6.630