Supramolecular Coordination Assemblies of Dinuclear Fe^III Complexes

Abstract

Geleerte Honigwaben: Hybride organisch‐anorganische Koordinationsensembles wurden mithilfe modifizierter Aminocarbonsäure‐Liganden als strukturdirigierende Agentien hergestellt. Die Netzwerkstrukturen variieren stark: von einem lamellaren Motiv über eine dicht gepackte hexagonale Anordnung bis zu einer hexagonalen Anordnung mit offenem Gerüst (siehe Struktur).

Thermolysis of a Hybrid Organic–Inorganic Supramolecular Coordination Assembly: Templating the Formation of Nanostructured Fibrous Materials and Carbon‐Based Microcapsules

“…Previously, we have successfully used electron microscopic techniques to identify structural patterns within crystals [11] and, in this case, the scanning electron microscopy (SEM) observation of the resulting a-b surface revealed a transformation of some regions of the crystal into fibers with a diameter of approximately 50-100 nm (Figure 3 a). These fibers are coagulated into bundles.…”

“…[9] Reaction systems that contain large organic hydrophobic ligands and hydrophilic ions favor the formation of cross-linked structures in which supramolecular aggregates are organized within vast areas of different polarities. We have previously described how increased steric hindrance around aromatic cycles (L) influences the topology and dimensionality of coordination chemistry networks based on {Fe 2 -(m-O)(m-CO 3 )(L) 2 } units, [10,11] thus bringing a new dimension to the now classical isoreticular chemistry concept. Herein, we describe the pyrolysis of an example of one of these compounds.…”

“…Singlecrystal X-ray analysis of 1 found its structure to be within the trigonal space group R3 c and demonstrates that 1 is isostructural with its potassium analogue. [11,12] Further confirmation of the space-group assignment was gained from X-ray powder diffraction measurements and simulations (see the Supporting Information). The presence of clearly demarcated nanosized organic and inorganic regions organized into a honeycomb-type structure prompted us to speculate about the synthesis of materials with nanoscale features by using thermal decomposition.…”

Synthesis, Structural Characterization and Luminescence of Lanthanide Coordination Polymers with Pyridine‐2,5‐dicarboxylic Acid

“…2 However, most of the current effort in this area has been focused on the design of infinite MOF with d-block transitionmetal (TM) ions. [3][4][5][6][7][8] The design and control over high dimensional lanthanide-based frameworks are currently a formidable task [9][10][11][12][13] owing to high coordination numbers of lanthanide ions, by contrast to the fruitful production of MOF with d-block transition metal ions. Whereas, lanthanides, with their special electronic shell, high and variable coordination numbers and flexible coordination environments, provide unique opportunities for discovery of unusual luminescence [14][15][16] and network topologies, 17-21 thus leading us to this interesting and challenging field.…”