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All results from a given calculation for Mg(OH)2 (Magnesium dihydroxide)

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2 1A

Conformer 1 (C2H)

Jump to S1C2
Vibrational Frequencies calculated at TPSSh/6-31G*
Rotational Constants (cm-1) from geometry optimized at TPSSh/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-351.777331
Energy at 298.15K-351.778978
HF Energy-351.777331
Nuclear repulsion energy81.397332
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 TPSSh/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 A 3851 3695 4.29      
2 A 597 573 13.95      
3 A 426 408 43.45      
4 A 144 138 5.35      
5 A 124 119 166.55      
6 B 3851 3695 50.37      
7 B 874 839 72.35      
8 B 432 415 259.50      
9 B 139 134 55.93      

Unscaled Zero Point Vibrational Energy (zpe) 5218.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 5007.0 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 TPSSh/6-31G*
ABC
16.65869 0.14402 0.14393

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 0.006
O2 0.000 1.777 0.023
O3 0.000 -1.777 0.023
H4 -0.401 2.612 -0.221
H5 0.401 -2.612 -0.221

Atom - Atom Distances (Å)
  Mg1 O2 O3 H4 H5
Mg11.77671.77672.65192.6519
O21.77673.55320.95804.4132
O31.77673.55324.41320.9580
H42.65190.95804.41325.2844
H52.65194.41320.95805.2844

picture of Magnesium dihydroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Mg1 O2 H4 150.338 Mg1 O3 H5 150.338
O2 Mg1 O3 178.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg 1.001      
2 O -0.893      
3 O -0.893      
4 H 0.393      
5 H 0.393      


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 -1.567 1.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.267 0.085 0.000
y 0.085 4.738 0.000
z 0.000 0.000 3.300


<r2> (average value of r2) Å2
<r2> 78.372
(<r2>)1/2 8.853