A {Na₂Fe₁₀} isobutyrate cluster, interlinked into 1D chains

Abstract

Charge-neutral [Na2Fe10O6(OH)4(isobutyrate)14(MeO)2(MeCN)2] coordination clusters, comprising a hollow ‘Chinese lantern’-like shell of six condensed planar triangular {FeIII3(μ3-O)} motifs, form upon ultrasonication of trinuclear Fe(III) isobutyrate units in acetonitrile in the presence...

{Mn6IIIMnIVDy2III} Single-Molecule Magnet Based on Cubane Subunits

“…For a rational design of heterometallic polynuclear clusters with promising magnetic properties, the choice of functional groups and the chemical nature of the metal centers, their coordination geometry and oxidation states, and the reaction conditions are crucial. In particular, the synthesis of high-nuclearity carboxylate clusters by heating smaller coordination clusters with polyfunctional ligands in the solid state, in high-boiling solvents, and under solvothermal or microwave treatment has proven successful. − The ultrasonication of the chemical reagents in various solvents has recently been shown by us to be a promising tool for nanocluster formation. ,− Compared to conventional heating, such a method can improve the reaction rates, purity, and yield and is also a simple, fast, and economical green method. In this context, the unique application of the sonochemical approach has been demonstrated in the assembly of wheel-shaped {Fe 18 Ln 6 } , and {Mn 26 Dy 6 } clusters, the latter showing SMM properties .…”

A Heniconuclear {Mn21} Cluster-Based Coordination Polymer with Manganese(II) Linkers Showing High Proton Conductivity

“…In the past few decades, the rational design and synthesis of coordination polymers (CPs) have attracted enormous interest due to their fascinating structure, topology, and various applications. − There are by now a large number of literature studies on CPs, most of which are formed by metal ion nodes and organic linkers. , To date, cluster-based CPs (CCPs), with a high connectivity number (CN), have become a new research focus. , CCPs mainly comprise high-nuclearity (larger than 10) metal clusters as highly connected nodes and different types of linkers. , As compared with metal ions as nodes, metal clusters with a larger size often provide more coordination modes and less steric hindrance when assembling into CPs with the linkers. − Apart from nodes, judicious selection of linkers is also critical for the development of CP materials with distinctive topology and functions. − While the organic linkers are predominantly adopted in designing CPs, the choice of simple transition metals (TMs) as the inorganic linkers, without the necessity of the concomitant use of organic solvents, has been long neglected. Therefore, the approach that employs inorganic TM ions as both cluster building blocks and linkers allows the design and synthesis of eminent CP materials with novel structures and properties in a facile and eco-friendly fashion.…”