Carbon hexagonal lattice. As of 2009, graphene appears to be the strongest material ever tested. The process of separating it from graphite will require some further technological development before it is economical for industrial processes. If successful, graphene could be used in the construction of a space elevator. It could also be used to safely store hydrogen for use in a hydrogen based engine in cars. The amorphous form is an assortment of carbon atoms in a non-crystalline, irregular, glassy state, not held in a crystalline macrostructure. It is present as a powder, and is the main constituent of substances such
Carbon–carbon bond triple bond are 134 pm and 120 pm, respectively. Also a consequence of its severe steric congestion, hexakis(3,5-di-"tert"-butyl)ethane has a greatly elongated central bond with a length of 167 pm. On the other hand, a very short triple bond of 115 pm has been observed for the iodonium species [HC≡C–IPh][CFSO], due to the strongly electron-withdrawing iodonium moiety. Carbon–carbon bond A carbon–carbon bond is a covalent bond between two carbon atoms. The most common form is the single bond: a bond composed of two electrons, one from each of the two atoms. The carbon–carbon single bond is a sigma bond and