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All results from a given calculation for Se2 (Selenium diatomic)

using model chemistry: BLYP/6-31G*

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 1Σg+

State 1 (3Σg)

Jump to S2C1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-4798.796918
Energy at 298.15K 
HF Energy-4798.796918
Nuclear repulsion energy275.116937
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 BLYP/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 365 362 0.00 18.53 0.27 0.43

Unscaled Zero Point Vibrational Energy (zpe) 182.6 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 181.1 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 BLYP/6-31G*
B
0.08533

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 1.112
Se2 0.000 0.000 -1.112

Atom - Atom Distances (Å)
  Se1 Se2
Se12.2235
Se22.2235

picture of Selenium diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 0.000      
2 Se 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 -36.383 0.000 0.000
y 0.000 -36.383 0.000
z 0.000 0.000 -33.257
Traceless
 xyz
x -1.563 0.000 0.000
y 0.000 -1.563 0.000
z 0.000 0.000 3.126
Polar
3z2-r26.252
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 3.799 0.000 0.000
y 0.000 3.799 0.000
z 0.000 0.000 10.581


<r2> (average value of r2) Å2
<r2> 106.122
(<r2>)1/2 10.302

State 2 (1Σg+)

Jump to S1C1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-4798.765047
Energy at 298.15K-4798.761013
HF Energy-4798.765047
Nuclear repulsion energy274.647561
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 BLYP/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 360 357 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 180.2 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 178.7 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 BLYP/6-31G*
B
0.08504

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 1.118
Se2 0.000 0.000 -1.118

Atom - Atom Distances (Å)
  Se1 Se2
Se12.2366
Se22.2366

picture of Selenium diatomic state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se 0.000      
2 Se 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 -33.480 0.000 0.000
y 0.000 -39.456 0.000
z 0.000 0.000 -33.298
Traceless
 xyz
x 2.897 0.000 0.000
y 0.000 -6.067 0.000
z 0.000 0.000 3.170
Polar
3z2-r26.340
x2-y25.976
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.799 0.000 0.000
y 0.000 3.799 0.000
z 0.000 0.000 10.581


<r2> (average value of r2) Å2
<r2> 106.454
(<r2>)1/2 10.318