Question: We can approximate the Sn 2+ coordination in the hypothetical CsCl-type SnO of the previous problem by an SnHs cube. The point-group symmetry for a

We can approximate the Sn²⁺ coordination in the hypothetical CsCl-type SnO of the

previous problem by an SnHs cube. The point-group symmetry for a cube is m3m (On). In SnHg, the Sn 5s and 5p

previous problem by an SnHs cube. The point-group symmetry for a cube is m3m (On). In SnHg, the Sn 5s and 5p orbitals have ang and 1 symmetry, respectively. The hydride ligands form two triply degenerate SALCs with thu and t2g symmetry, as well as two singly degenerate SALCs with aig and a2u symmetry. Use this information to construct an approximate MO diagram for a cubic SnHg6 molecule. What is the degeneracy, bonding character, and symmetry of the HOMO and LUMO?

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