title: Periodic cages.
abstract: Various cages are constructed by using three types of caps: f-cap (derived from spherical fullerenes by deleting zones of various size), kf-cap (obtainable by cutting off the polar ring, of size k), and t-cap ("tubercule"-cap). Building ways are presented, some of them being possible isomerization routes in the real chemistry of fullerenes. Periodic cages with ((5,7)3) covering are modeled, and their constitutive typing enumeration is given. Spectral data revealed some electronic periodicity in fullerene clusters. Semiempirical and strain energy calculations complete their characterization.
authors.affiliation: Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400084 Cluj, Romania. diudea@chem.ubbcluj.ro
authors.forename: Mircea V
authors.initials: MV
authors.lastname: Diudea
authors.forename: Csaba L
authors.initials: CL
authors.lastname: Nagy
authors.forename: Ioan
authors.initials: I
authors.lastname: Silaghi-Dumitrescu
authors.forename: Ante
authors.initials: A
authors.lastname: Graovac
authors.forename: Dusanka
authors.initials: D
authors.lastname: Janezic
authors.forename: Drazen
authors.initials: D
authors.lastname: Vikić-Topić