Fig. 2: The molecular structure of the Al24 Archimedean cage.
From: Water-stable porous Al24 Archimedean solids for removal of trace iodine
a Illustration of the assembly and structural model of the inner inorganic tcu core and calixarene-like organic subunits (atom color code: Al: bright green; O: red; C: gray; H: white). The size of the tcu cage is ca. 1.9 nm based on the distance between the BA ligands. b Quintuple structural symmetric anatomy of the Al24 Archimedean solid. The inner shell is an O8 cube, the second shell is an O24 truncatedoctahedral (tro) cage, the third shell is an Al24 truncatedhexahedron (tcu) cage, the fourth shell is an (OR)24 rhombicuboctahedron (rco) cage, and the outermost shell is a (BA)12 cuboctahedron (cuo) cage.
