87. Amorphous carbon

Synthesis and Characterization of Novel Chiral Conjugated Materials

“…com pared with fullerenes) was fi rst considered by Riley and coworkers, in their stud ies of amorphous carbon. However, this structure remains experimentally elusive [104][105][106].…”

Carbon phases from sp 2 hybridized atoms with three-dimensional rigidly bound structure

“…However, of greatest interest are works devoted to an analysis of the possible 3D structure of phases formed by sp 2 carbon atoms. The first three-dimensional rigidly bound carbon structure was suggested by Riley et al [14] in 1946. Three-dimensional carbon networks comprising only sp 2 carbon atoms were also investigated by Hoffmann et al [15].…”

Aromatic and Alkaromatic Chlorocarbons

“…In some cases they obtained benzene and other-presumably aliphatic-hydrocarbons. Dechlorinations with alkali metals, such as lithium [192], sodium [192,193], sodium amalgam [193], and potassium [19], yield carbonaceous materials. It has been reported that with sodium and sodium chloride at 300 0 , a highly impure, insoluble material is obtained to which the structure of a polyp-phenylene has tentatively been assigned [194].…”