
1) Boron compound
Found on
https://www.crosswordclues.com/clue/diboryne

A diboryne in chemistry is a chemical compound containing a boron-to-boron triple bond. Such compounds are only investigated in academia and only a few have been reported. A diboryne stabilized by two carbon monoxide groups (OCBBCO) was reported isolated in matrix isolation in 2002. A diboryne stable at room temperature with two N-heterocyclic car...
Found on
http://en.wikipedia.org/wiki/Diboryne
No exact match found.