Coordination Chemistry of 2,2′-Bipyridyl- and 2,2′:6′,2″-Terpyridyl-Substituted BEDT-TTFs: Formation of a Supramolecular Capsule Motif by the Iron(II) Tris Complex of 2,2′-Bipyridine-4-thiomethyl-BEDT-TTF

Molecules of tris(2,2′-bipyridine-4-thiomethyl-BEDT-TTF)­iron­(II) (BEDT-TTF = bis(ethylenedithio)­tetrathiafulvalene) assemble in pairs to form a novel supramolecular capsular structure in the solid state. Three BEDT-TTF residues from one complex lie in the three grooves between coordinated bipyridines of the other complex, and vice versa, to form a capsule with 3-fold rotational symmetry and an internal volume of ca. 160 Å3. Further aspects of the coordination chemistry of this ligand, its 6-substituted isomer, and the 2,2′:6′2″-terpyridyl-4′-thiomethyl-BEDT-TTF analogue are described.