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All results from a given calculation for MgO (magnesium oxide)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ+
Energy calculated at CCSD(T)/6-31G**
 hartrees
Energy at 0K-274.595874
Energy at 298.15K-274.596004
HF Energy-274.323472
Nuclear repulsion energy28.697367
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 CCSD(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 Σ 753 714        

Unscaled Zero Point Vibrational Energy (zpe) 376.2 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 356.9 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 CCSD(T)/6-31G**
B
0.56073

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Mg1 0.000 0.000 0.708
O2 0.000 0.000 -1.062

Atom - Atom Distances (Å)
  Mg1 O2
Mg11.7700
O21.7700

picture of magnesium oxide state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability