Structures of Metal–Organic Frameworks with Rod Secondary Building Units

Rod MOFs are metal–organic
frameworks in which the metal-containing secondary building units
consist of infinite rods of linked metal-centered polyhedra. For such
materials, we identify the points of extension, often atoms, which
define the interface between the organic and inorganic components
of the structure. The pattern of points of extension defines a shape
such as a helix, ladder, helical ribbon, or cylinder tiling. The linkage
of these shapes into a three-dimensional framework in turn defines
a net characteristic of the original structure. Some scores of rod
MOF structures are illustrated and deconstructed into their underlying
nets in this way. Crystallographic data for all nets in their maximum
symmetry embeddings are provided.