title: Chlorinated derivatives of c78-fullerene isomers with unusually short intermolecular halogen-halogen contacts.
abstract: The chlorinated fullerenes C78(2)Cl18 and C78(3)Cl18 were synthesized by highly selective chlorination of the individual isomers. They were crystallized as C78(2)Cl18 x Br2 x TiCl4 and solvent free C78(3)Cl18. The carbon connectivities of both isomers have been confirmed through X-ray single-crystal analysis. Studious investigation of both crystal packings together with the crystal structure of C78(4)Cl18 has revealed the presence of unusually short intermolecular halogen-halogen contacts, which provide evidence for attractive intermolecular interactions, the nature of which is discussed.
authors.affiliation: Department of Chemistry, Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany).
authors.forename: Kalin S
authors.initials: KS
authors.lastname: Simeonov
authors.forename: Konstantin Yu
authors.initials: KY
authors.lastname: Amsharov
authors.forename: Martin
authors.initials: M
authors.lastname: Jansen