. The simplest aryne, C6H4 (labeled 1 in the diagram to the right), is sometimes called benzyne. However, this name is open for criticism because it implies a triple bond which would be a special case of triple bonds, so a better name is didehydrobenzene. Benzyne is, like benzene, stabilized by resonance between structures 1 and 2— so, like the case of benzene, a better representation of the electronic structure would be 3. The "extra" pi bond (4b) is localised and orthogonal to the other… (More on Aryne)