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All results from a given calculation for MgF2 (Magnesium fluoride)

using model chemistry: PBEPBE/6-31G(2df,p)

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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-399.579182
Energy at 298.15K-399.579602
HF Energy-399.579182
Nuclear repulsion energy77.417083
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 PBEPBE/6-31G(2df,p)
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 573 567 0.00      
2 Σu 901 892 97.05      
3 Πu 176 174 102.61      
3 Πu 176 174 102.61      

Unscaled Zero Point Vibrational Energy (zpe) 912.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 903.2 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 PBEPBE/6-31G(2df,p)
B
0.14433

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 0.000
F2 0.000 0.000 1.753
F3 0.000 0.000 -1.753

Atom - Atom Distances (Å)
  Mg1 F2 F3
Mg11.75331.7533
F21.75333.5066
F31.75333.5066

picture of Magnesium fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Mg1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg 0.467      
2 F -0.234      
3 F -0.234      


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 -16.378 0.000 0.000
y 0.000 -16.378 0.000
z 0.000 0.000 -31.646
Traceless
 xyz
x 7.634 0.000 0.000
y 0.000 7.634 0.000
z 0.000 0.000 -15.268
Polar
3z2-r2-30.537
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 2.754 0.000 0.000
y 0.000 2.754 0.000
z 0.000 0.000 2.896


<r2> (average value of r2) Å2
<r2> 68.740
(<r2>)1/2 8.291