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All results from a given calculation for Mg2 (Magnesium diatomic)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-397.567143
Energy at 298.15K-397.566875
HF Energy-397.567143
Nuclear repulsion energy21.821194
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/3-21G
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 90 89 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 45.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 44.7 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 PBEPBE/3-21G
B
0.11527

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 1.746
Mg2 0.000 0.000 -1.746

Atom - Atom Distances (Å)
  Mg1 Mg2
Mg13.4921
Mg23.4921

picture of Magnesium diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg 0.000      
2 Mg 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 -25.714 0.000 0.000
y 0.000 -25.714 0.000
z 0.000 0.000 -27.259
Traceless
 xyz
x 0.772 0.000 0.000
y 0.000 0.772 0.000
z 0.000 0.000 -1.545
Polar
3z2-r2-3.089
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 18.397 0.000 0.000
y 0.000 18.397 0.000
z 0.000 0.000 36.408


<r2> (average value of r2) Å2
<r2> 89.550
(<r2>)1/2 9.463