Metal and ligand control in di- and octa-nuclear cluster formation

摘要

Reaction of doubly negatively charged m-pyridinediyl spacered bis-bidentate ligands with iron(III) chloride in the presence of alkaline, alkaline earth, and rate earth metal cations (M~(n+)) yielded {2}-iron cryptates {M(is contained in)[Fe_2(L)_3]}~(n+). The mono-, di-, and tri-valent guest cations are endohedrally encapsulated in the cavity ofthe bicyclic dinuclear host.