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

using model chemistry: LSDA/aug-cc-pVDZ

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 LSDA/aug-cc-pVDZ
 hartrees
Energy at 0K-200.527587
Energy at 298.15K-200.528756
HF Energy-200.527587
Nuclear repulsion energy7.572782
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/aug-cc-pVDZ
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 1525 1508 0.00      
2 Σu 1576 1558 354.61      
3 Πu 427 422 384.87      
3 Πu 427 422 384.87      

Unscaled Zero Point Vibrational Energy (zpe) 1977.5 cm-1
Scaled (by 0.9887) Zero Point Vibrational Energy (zpe) 1955.2 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 LSDA/aug-cc-pVDZ
B
2.85337

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/aug-cc-pVDZ

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 1.712
H3 0.000 0.000 -1.712

Atom - Atom Distances (Å)
  Mg1 H2 H3
Mg11.71201.7120
H21.71203.4241
H31.71203.4241

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 LSDA/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg -0.160      
2 H 0.080      
3 H 0.080      


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 -10.986 0.000 0.000
y 0.000 -10.986 0.000
z 0.000 0.000 -22.020
Traceless
 xyz
x 5.517 0.000 0.000
y 0.000 5.517 0.000
z 0.000 0.000 -11.034
Polar
3z2-r2-22.068
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 5.152 0.000 0.000
y 0.000 5.152 0.000
z 0.000 0.000 6.583


<r2> (average value of r2) Å2
<r2> 15.021
(<r2>)1/2 3.876