Fig. 3: Frontier molecular orbitals of HAT and Fe-DPyP that exhibit p-orbital characteristics.
From: A p-orbital honeycomb-Kagome lattice realized in a two-dimensional metal-organic framework

a The super-atom model of \({({{{{{\rm{HAT}}}}}}-{{{{{{\rm{Fe}}}}}}}_{3})}_{2}{({{{{{\rm{Fe-DPyP}}}}}})}_{3}\), where triangle/square represents HAT/Fe-DPyP. b Lowest unoccupied molecular orbital (LUMO), LUMO + 1/+2 of HAT. c LUMO + 1 of Fe-DPyP.