title: Spontaneous assembly of a nine-vertex lithium framework encapsulating the peroxide dianion.
abstract: Investigation of the structure of the lithiated bicyclic guanidine 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine (hppH) has led to the reproducible isolation of compounds containing the 'Li9(hpp)7(O2)' core, in which a peroxide dianion has been encapsulated within a mono-capped, cubic array of lithium ions.
authors.affiliation: Department of Chemistry, University of Sussex, Falmer, Brighton, UK. m.p.coles@sussex.ac.uk
authors.forename: Martyn P
authors.initials: MP
authors.lastname: Coles
authors.forename: Peter B
authors.initials: PB
authors.lastname: Hitchcock