 Amorphous carbonia

An amorphous nonmolecular form of carbon dioxide. It is distinct from molecular dry ice and from assuming a unique crystalline polymorph.^[ref]

Amorphous carbonia, often referred to simply as "amorphous carbon," is a form of carbon that lacks a well-defined crystalline structure. Unlike crystalline carbon forms, such as diamond or graphite, which have ordered atomic arrangements, amorphous carbon has a disordered arrangement of carbon atoms. This gives it unique properties, including varying electrical conductivity and mechanical strength.