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All results from a given calculation for MgH2 (magnesium dihydride)

using model chemistry: HSEh1PBE/6-311G**

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 HSEh1PBE/6-311G**
 hartrees
Energy at 0K-201.136954
Energy at 298.15K-201.138178
HF Energy-201.136954
Nuclear repulsion energy7.581779
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 HSEh1PBE/6-311G**
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 1602 1538 0.00      
2 Σu 1626 1562 428.26      
3 Πu 457 439 470.68      
3 Πu 457 439 470.68      

Unscaled Zero Point Vibrational Energy (zpe) 2071.2 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 1989.2 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 HSEh1PBE/6-311G**
B
2.86015

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 0.000
H2 0.000 0.000 1.710
H3 0.000 0.000 -1.710

Atom - Atom Distances (Å)
  Mg1 H2 H3
Mg11.71001.7100
H21.71003.4200
H31.71003.4200

picture of magnesium dihydride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Mg1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg 0.422      
2 H -0.211      
3 H -0.211      


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 -10.593 0.000 0.000
y 0.000 -10.593 0.000
z 0.000 0.000 -22.708
Traceless
 xyz
x 6.057 0.000 0.000
y 0.000 6.057 0.000
z 0.000 0.000 -12.115
Polar
3z2-r2-24.230
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 3.863 0.000 0.000
y 0.000 3.863 0.000
z 0.000 0.000 5.522


<r2> (average value of r2) Å2
<r2> 14.987
(<r2>)1/2 3.871