CNCl3

CNCl3 is a chemical formula that does not represent a stable or recognized chemical compound. The valence of carbon is typically four, and the valence of nitrogen is typically three. Chlorine typically has a valence of one. Therefore, a neutral compound with one carbon, one nitrogen, and three chlorine atoms bonded in a simple Lewis structure is not feasible. It is possible that "CNCl3" is a typographical error or refers to a highly unstable or transient species that has not been well-characterized or widely reported. In standard chemical nomenclature and understanding of bonding, this formula does not correspond to an established molecule. Further context or clarification would be necessary to identify a specific chemical entity if "CNCl3" is intended to represent something beyond a simple formula. For instance, it could potentially be a fragment or a complex ion, but as a neutral molecule, it is not a standard chemical species.