Synthesis, Structural Characterization, and Magnetic Properties of Two New Fe(III)Mn(III) 1D Bimetallic Compounds.

Two Fe(III)Mn(III) bimetallic compounds, [Tp*Fe (CN)][(Mnsalen)]·MeOH·MeCN () and [Tp*Fe (CN)][Mnsalphen]·MeOH·HO (), were prepared by assembling the tricyanometalate building block (TEA)N [Tp*Fe(CN)] [Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate] and the respective Mn Schiff base precursors [salen = ,'-ethylenebis(salicylideneiminate), salphen = ,-bis(salicylidene)-1,2-phenylenediamine]. Both compounds exhibit a one-dimensional (1D) zigzag chain structure linked by cyanide bridges, forming a (-Fe-C≡N-Mn-N≡C-) motif. Magnetic studies show a gradual increase of χ values in both complexes upon lowering temperature, indicating ferromagnetic coupling between the Fe and Mn metal centers with Curie-Weiss constants of +1.