Square/hexagon route towards the boron-nitrogen clusters

A new route towards B/N clusters is considered, based on squares and hexagons. The pattern always requires six squares while the number of hexagons increases linearly with the number of atoms. The route can produce species of similar or even higher stability compared to the conventional pentagon-hexagon pattern. Four particular stoichiometries emerge from the available AM1 computations: B12N12, B28N28, B36N36, and B36N24.