A Salicylaldoxime [Mn₁₂] Complex with an Unprecedented [Mn^III₄Mn^II₈(μ‐OCH₃)₄] Core

Abstract

6 pagesInternational audienceA mixed-valent [Mn12] complex with an unprecedented [MnIII4MnII8(μ-OCH3)4] core was obtained by oxidation of MnCl2 in the presence of salicylaldoxime (saoH2). This complex adopts a rare topology based on a central [MnII4] cage decorated by four dinuclear [MnII-MnIII] motifs. Studies ofthe magnetic properties show the presence of strong intracomplex antiferromagnetic interactions and suggest an ST = 2 spin ground state

Synthesis, structure and magnetic properties of a new one dimensional manganese coordination polymer constructed by a new asymmetrical ligand

“…was consistent with its chemical formulas. It is well established that Mn(II) can readily be oxidized by atmospheric oxygen to Mn(III) and stabilized by complex formation on reacting with Schiff-base ligands, as can be inferred from numerous reports in this field [17].…”

Ligand Control of Manganese Telluride Molecular Cluster Core Nuclearity

“…We have thus far focused our attention on electrically neutral transition metal chalcogenide molecular cluster building blocks of a single extended family: ligand-passivated, roughly 14-atom spherical cages. − With M = V, Cr, Fe, Co, and Ni; E = S, Se, and Te; and L = two-electron donor ligand, this family includes the Chevrel-type cage M 6 E 8 L 6 , − the inverse structure M 8 E 6 L 8 , as well as their respective chalcogen- and metal-filled analogues, M 6 E 9 L 6 and M 9 E 6 L 8 . While the chemistry of manganese oxide molecular clusters is rich, − there is only a small handful of known manganese clusters containing heavier chalcogens (i.e., S, Se, and Te), and none that are passivated with L-type two-electron donor ligands. Noteworthy examples include [Mn 4 (SPh) 10 ] 2– , [Mn 4 Se 4 ­(SeSiMe 3 ) 4 ] 4– , [Mn 4 Sn 4 ­Se 17 ] 10– , and [Mn 4 Te 4 ­(E i Pr) 4 ] 4– (E = S, Se, Te). , Here, we describe a new family of neutral manganese telluride molecular clusters that are stabilized by two-electron donor ligands.…”