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All results from a given calculation for Al2 (Aluminum diatomic)

using model chemistry: B3PW91/6-31G

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 B3PW91/6-31G
 hartrees
Energy at 0K-484.667139
Energy at 298.15K-484.666748
HF Energy-484.667139
Nuclear repulsion energy35.041333
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 B3PW91/6-31G
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 320 307 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 160.2 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 153.4 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 B3PW91/6-31G
B
0.19184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.276
Al2 0.000 0.000 -1.276

Atom - Atom Distances (Å)
  Al1 Al2
Al12.5522
Al22.5522

picture of Aluminum diatomic state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.000      
2 Al 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 -29.666 0.000 0.000
y 0.000 -29.666 0.000
z 0.000 0.000 -22.338
Traceless
 xyz
x -3.664 0.000 0.000
y 0.000 -3.664 0.000
z 0.000 0.000 7.328
Polar
3z2-r214.656
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 -17.664 0.000 0.000
y 0.000 -17.664 0.000
z 0.000 0.000 24.780


<r2> (average value of r2) Å2
<r2> 59.341
(<r2>)1/2 7.703

State 2 (1Σg)

Jump to S1C1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-484.655083
Energy at 298.15K-484.654536
Nuclear repulsion energy28.619869
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 B3PW91/6-31G
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 201 192 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 100.3 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 96.0 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 B3PW91/6-31G
B
0.12797

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.562
Al2 0.000 0.000 -1.562

Atom - Atom Distances (Å)
  Al1 Al2
Al13.1248
Al23.1248

picture of Aluminum diatomic state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.000      
2 Al 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 -23.635 0.000 0.000
y 0.000 -23.635 0.000
z 0.000 0.000 -44.865
Traceless
 xyz
x 10.615 0.000 0.000
y 0.000 10.615 0.000
z 0.000 0.000 -21.231
Polar
3z2-r2-42.462
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 13.243 0.000 0.000
y 0.000 13.243 0.000
z 0.000 0.000 32.395


<r2> (average value of r2) Å2
<r2> 82.650
(<r2>)1/2 9.091