The structures of Bi607FCI 3 and Bi~20~5C!6 can both be derived from a hypothetical non-stoichiometric parent structure with the composition Bi6XT+nC13. The method for deriving the structures is a building operation at the unit-cell level named 'chemical twinning'.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.