(c) In the triangular boron lattice (pink network), the resonance of alternating 3c-2e σ bonds in neighboring triangles leads to the delocalization of σ electrons, (d) and the resonance of ...

Image Credit: Nanalysis Corp. Scheme 2. Resonance structures of DMA, the hybridization results in the delocalization of electrons (indicated by the dotted line) between the O–C–N bonds.