POLYMORPHS

Conceivably the glitter series and hexagonite series C networks could also be realized as III-IV and III-V binary compositions and possibly as Group IV allotropes and Group IV binaries. And possibly IV-V binaries where the Group IV element is Si or Ge or Sn or Pb. I do not know how many compositions are possible but it is over a dozen I believe. They are targets for 3D synthesis eventually. The 3-3 double bond has a high force constant and pi bond delocalization capacities. Might lead to interesting electronic and mechanical properties. The synthesis of such realizations is an important frontier for chemistry and physics and materials science...some day.