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

using model chemistry: B2PLYP=FULL/aug-cc-pVTZ

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 B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-201.132900
Energy at 298.15K-201.134142
HF Energy-201.104811
Nuclear repulsion energy7.647814
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 B2PLYP=FULL/aug-cc-pVTZ
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 1653 1586 0.00      
2 Σu 1680 1612 440.97      
3 Πu 467 448 504.75      
3 Πu 467 448 504.75      

Unscaled Zero Point Vibrational Energy (zpe) 2132.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 2046.3 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 B2PLYP=FULL/aug-cc-pVTZ
B
2.91019

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

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 1.695
H3 0.000 0.000 -1.695

Atom - Atom Distances (Å)
  Mg1 H2 H3
Mg11.69521.6952
H21.69523.3905
H31.69523.3905

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