Redox shield enfolding a magnetic core

Abstract

Ferrocenyl betadiketones were reacted with hydrated lanthanide trihalides in presence of a base to yield red color solids, whose structures were characterized by single crystal X-ray diffraction technique. Structural analysis revealed the formation of nona-and tetranuclear lanthanide oxo-hydroxo clusters [Dy9(l4-O)2(l3-OH)8(l-Fca)8(Fca)8] ) [HN(C2H5)3] + (1), [Ln4(l-OH)2(l-OCH3)4(CH3OH)2(Fctfa)6] Ln = Yb (2), Lu (3), and [Ln4(l-OH)2(l-OCH3)4( CH3OH)2(Fcpfa)6] Ln = Yb (4), Lu (5). Magnetism studies revealed that 1 shows slow relaxation of magnetisation. Cyclic voltammetry studies of 1 reveal electrochemically stable quasi reversible oxidation systems whereas 2-5 showed irreversible nature..

Heterometallic Molecular Architectures Based on Fluorinated β-Diketone Ligands

“…The organic base promoted the deprotonation of methanol and water molecules followed by the formation of a tetranuclear lanthanide(III) framework due to methanolate and hydroxide anions, which act as O-bridging ligands (Figure 28). The β-diketones HL 15 reacted with Ln(III) chloride in the presence of triethylamine in methanol at room temperature to yield the clusters 54 containing four 4f metal ions decorated with ferrocene rings (Scheme 21) [97]. The organic base promoted the deprotonation of methanol and water molecules followed by the formation of a tetranuclear lanthanide(III) framework due to methanolate and hydroxide anions, which act as O-bridging ligands (Figure 28).…”

Ferrocene-Functionalized Cu(I)/Ag(I) Dithiocarbamate Clusters

“…Because of its large surface area-to-volume ratio the metallodendrimers can incorporate more ferrocene units, but dendrimers require multistep syntheses, tedious synthetic efforts that often lead to end products with poor yield. Nevertheless, inorganic cores, for example, stannoxanes, cyclophosphazenes, aluminum–nitrogen/carbide frameworks, metal chalcogenolates, multinuclear transition and lanthanide metal cores, overcome these challenges and serve as potential candidates for supporting multiferrocene assemblies. Recently the synthesis of ferrocene assemblies via click chemistry (CuAAC) has been reported …”