Open-Framework Rubidium Halides Incorporated in Cadmium Oxalate Host Lattices

Metal Carboxylates with Open Architectures

“…In addition, a strategy for building up open‐framework hybrid metal dicarboxylates by substituting an appropriate metal carboxylate unit into a desired structure is shown (Scheme ). Recalling the recent report that extended alkali‐metal halide structures of different dimensionalities can be incorporated into cadmium oxalate hosts by carrying out simple metathetic reactions between cadmium halides and alkali‐metal oxalates under hydrothermal conditions,61e there is much to look forward to, with many more hybrid materials formed by carrying out reactions under different conditions imaginable. In this respect hydrothermal and solvothermal routes are likely to yield several more novel materials with interesting properties.…”

“…Recently, a new class of cadmium oxalates incorporating extended alkali‐metal halides was described 61e. 204–206 These compounds may be considered as nanocomposites of unusual alkali‐metal‐halide structures within oxalate frameworks.…”

“…“Nanocomposite” hybrid compounds, such as the alkali‐metal halide cadmium oxalates are examples of scale‐up chemistry in which the host/guest controls the structure of the guest/host species. In [Rb 2 Cd(NO 3 )(Cl)(ox)(H 2 O)], the framework incorporates a rubidium excess (Rb 2 NO 3 ) slab that is sandwiched between the cadmium chlorooxalate layers 61e. 1D alkali‐metal halide chains with zigzag and helical structures have also been embodied into cadmium oxalate and manganese oxalate frameworks 205.…”

Offene Metallcarboxylat‐Architekturen

“…Kürzlich wurde eine neue Klasse von Cadmiumoxalaten beschrieben, in denen aufgeweitete Alkalimetallhalogenid‐Strukturen eingelagert sind 61e. 204–206 Interessant ist, dass einfache Metathesereaktionen von Cadmiumhalogeniden und Alkalimetalloxalaten unter Hydrothermalbedingungen zu diesen neuartigen Nanokompositen führen.…”

“…Nanokomposite wie die Alkalimetallhalogenid‐Cadmiumoxalat‐Hybridverbindungen sind Beispiele für den sukzessiven Aufbau immer größerer Strukturen, in denen Wirt und/oder Gast die Struktur einer Wirt‐Gast‐Spezies kontrollieren. Im [Rb 2 Cd(NO 3 )(Cl)(ox)(H 2 O)] wird in das Gerüst eine Schicht mit Rubidiumionenüberschuss (Rb 2 NO 3 ) zwischen die Cadmiumchlorooxalat‐Schichten eingelagert 61e. Auch Alkalimetallhalogenid‐Ketten mit Zickzack‐Strukturen oder helicalen Strukturen können als Gäste in Cadmium‐ und Manganoxalat‐Gerüsten auftreten 205.…”