return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for MgOH (magnesium hydroxide)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-275.910958
Energy at 298.15K-275.911600
HF Energy-275.910958
Nuclear repulsion energy35.135450
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 mPW1PW91/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 4055 3879 44.06      
2 A' 752 720 53.99      
3 A' 173 165 144.11      

Unscaled Zero Point Vibrational Energy (zpe) 2490.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 2382.2 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 mPW1PW91/6-311G**
ABC
79.29010 0.48872 0.48573

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.023 0.988 0.000
Mg2 0.023 -0.808 0.000
H3 -0.468 1.800 0.000

Atom - Atom Distances (Å)
  O1 Mg2 H3
O11.79620.9492
Mg21.79622.6544
H30.94922.6544

picture of magnesium hydroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Mg2 O1 H3 148.859
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.773      
2 Mg 0.520      
3 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.825 -1.155 0.000 1.420
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.646 -1.806 0.000
y -1.806 -17.056 0.000
z 0.000 0.000 -16.301
Traceless
 xyz
x 1.032 -1.806 0.000
y -1.806 -1.083 0.000
z 0.000 0.000 0.051
Polar
3z2-r20.101
x2-y21.410
xy-1.806
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.042 -0.085 0.000
y -0.085 6.625 0.000
z 0.000 0.000 7.867


<r2> (average value of r2) Å2
<r2> 29.320
(<r2>)1/2 5.415