Highest energy
π-like Molecular Orbitals for
C9H9+ |
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Orbital 30a is continuous for both
phases and is a paradromic ribbon of twist
T=2 (more precisely Lk=2) |
This comprises T≅1 from the π
basis (a delocalized twist) and T≅1 from a
tight (localized) twist occurring in the region
of the node, and is allowed because σ/π mixing with the C-H bond lying along
the C2 axis destroys the node. |
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