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All results from a given calculation for MgCl2 (Magnesium dichloride)

using model chemistry: QCISD(T)/6-31G*

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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-1119.041118
Energy at 298.15K-1119.041139
HF Energy-1118.727137
Nuclear repulsion energy133.632382
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 QCISD(T)/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 Σg 326 313        
2 Σu 632 606        
3 Πu 112 107        
3 Πu 112 107        

Unscaled Zero Point Vibrational Energy (zpe) 590.8 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 566.8 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 QCISD(T)/6-31G*
B
0.05036

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 0.000
Cl2 0.000 0.000 2.188
Cl3 0.000 0.000 -2.188

Atom - Atom Distances (Å)
  Mg1 Cl2 Cl3
Mg12.18782.1878
Cl22.18784.3755
Cl32.18784.3755

picture of Magnesium dichloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 Mg1 Cl3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD(T)/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Mg 0.669      
2 Cl -0.334      
3 Cl -0.334      


Electric dipole moments


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 187.726
(<r2>)1/2 13.701