Tetrahedral, Tetragonal, and Square Planar Fields

In a tetrahedral complex, the ligands are located between the axes and none of the d orbitals point directly at the ligands, but the dxv, dyz, and dxz orbitals point more closely to the ligands 

It should be noted that the triply degenerate set of orbitals is labeled as t2 with no g subscript. The g subscript refers to gerade or even and to preservation of sign on reflection through a center of symmetry. Because there is no center of symmetry for a tetrahedron (see Chapter 2), the g subscript is dropped, giving the t2 and e designations. 

Throughout this discussion, the splitting of the d orbitals caused by ligand fields has been shown. When there are electrons in the d orbitals, it is possible to induce transitions 

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