Hydrogen group orbitals

The hydrogen group orbitals are referred to as symmetry adjusted linear combinations (SALC). Although their development will not be shown here, the molecular orbital diagrams for other tetrahedral molecules are similar. 

Carbon orbitals Molecular orbitals Hydrogen group orbitals... 

Use the symmetry of the atomic orbitals of the central atom to construct (using appropriate hydrogen group orbitals) the molecular orbital diagrams for the following. 

The interaction diagrams of Fig. 40 show the various orbital interactions which obtain in the two geometries. However, before we make a one-to-one comparison of these interactions, a few remarks regarding the effect of bending upon the hydrogen group orbitals is necessary. 

A Because the hydrogen group orbitals have the symmetries a, and b2 and, therefore, cannot interact with an orbital of any other symmetry. 

Classification of the hydrogen group orbitals. The H-H bonding group orbital, hv transforms as a +, and the H-H anti-bonding group orbital, h2, transforms as cu+. The detailed conclusions are dealt with in Section 3.2.1. 

Thus, the two hydrogen group orbitals (cpi and cp2) will have the forms ... 

Table 6-4. The C3v Character Table and the Reducible Representation of the Hydrogen Group Orbitals of Ammonia...

When the projection operator is applied to one of the Is orbitals of the hydrogen group orbitals with the two E representations, the two E symmetry doubly degenerate SALCs result ... 

The other hydrogen group orbital has Ag symmetry. Two boron group orbitals have Ag symmetry one is derived from orbitals, and one is derived from s orbitals. These three group orbitals have similar energy. The result of the Ag interactions is the formation of three... 

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