A novel three-dimensional open framework constructed from infinite chains of edge-sharing CeO8(H2O) polyhedron: [Ce2(ad)3(H2O)2]n

Magnetic and structural properties of two open-frameworks Nd(III) adipates

“…Two of the adipate ligands bind the Nd ions through a bidentate interaction, while the other three show a monodentate interaction. The adipate dianions conformations and binding modes to lanthanides have been described by several authors [16,18]. Fig.…”

“…They help towards the formation of clusters, polymeric structures and open-frameworks which give rise to materials with cooperative magnetic interactions of different dimensionality. Many authors have claimed [13][14][15][16][17][18][19] that hydrothermal synthesis is necessary to produce open-framework structures. However, a gel diffusive technique has also been successfully employed to obtain some rare earth dicarboxylates with polymeric structures [11][12]20].…”

Toward Templated Metal−Organic Frameworks: Synthesis, Structures, Thermal Properties, and Luminescence of Three Novel Lanthanide−Adipate Frameworks

“…The study of porous framework materials in recent years has developed into a significant area of research. − Feasible applications in sensing, catalysis, ion exchange, separations, or gas storage have attracted considerable attention to these compounds. − Much of this interest stems from the ability of these materials to selectively sorb, occlude, and exchange species on an atomic or molecular size scale. Traditionally, zeolites and zeolite-like materials (e.g., aluminophosphates) represent the forefront of this line of research. − A more recent extension of this work has been the introduction of metal−organic framework materials (MOFs), which are porous materials constructed through highly directional covalent bonding between metal centers and organic “linkers” of varying dimensionality and functional group composition. − …”

“…MOFs offer the potential for extensive topological and functional control through judicious choice of the organic linker. The use of specific functional groups may influence which metals can be used, such as Zn 2+ with carboxylate groups , or Cu 2+ with pyridyl groups. − Further, the geometry of the organic component may influence the overall topology: more flexible aliphatic linkers have been shown to produce more dense structures, − whereas rigid, conjugated species may promote more open and robust topologies. ,,− An exception to this allows for construction of open frameworks with a flexible ligand through selection of a metal center with a high coordination sphere, such as with the lanthanides and actinides. ,,− An advantage of such a selection is that the flexibility of the ligand may aid in maintaining an open framework upon evacuation of any guest molecules present in the pores. , These few examples are by no means an exhaustive listing of the vast diversity of MOF materials but rather are representative of the philosophy of the construction of inorganic/organic hybrid frameworks. Readers are encouraged to explore more thorough reviews ,,,, to appreciate the breadth of compounds in these systems.…”

Polycatenated (4,4) lanthanide(III) coordination networks based on apidate: Synthesis, structure and properties

“…This indicates a preferential coordination of Ln to ADI. In light of the hydrothermal formation of the layered stacking 2D Ln-ADI sheets [7] and 3D MOF [8] in the absence of H 2 PDC and the isolations of two extra Nd polymers (Fig. S2) by us from the parallel reactions of Nd 2 O 3 and H 2 ADI in the absence and presence of H 2 PDC, the non-coordinating species is assumed to be a specific template [9] for resulting of inclined interpenetrated Ln-ADI networks.…”