2 research outputs found

    Anion-Controlled Assembly of Four Manganese Ions: Structural, Magnetic, and Electrochemical Properties of Tetramanganese Complexes Stabilized by Xanthene-Bridged Schiff Base Ligands

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    The reaction of manganeseĀ­(II) acetate with a xanthene-bridged bisĀ­[3-(salicylideneamino)-1-propanol] ligand, H<sub>4</sub>L, afforded the tetramanganeseĀ­(II,II,III,III) complex [Mn<sub>4</sub>(L)<sub>2</sub>(Ī¼-OAc)<sub>2</sub>], which has an incomplete double-cubane structure. The corresponding reaction using manganeseĀ­(II) chloride in the presence of a base gave the tetramanganeseĀ­(III,III,III,III) complex [Mn<sub>4</sub>(L)<sub>2</sub>Cl<sub>3</sub>(Ī¼<sub>4</sub>-Cl)Ā­(OH<sub>2</sub>)], in which four Mn ions are bridged by a Cl<sup>ā€“</sup> ion. A pair of L ligands has a propensity to incorporate four Mn ions, the arrangement and oxidation states of which are dependent on the coexistent anions

    Anion-Controlled Assembly of Four Manganese Ions: Structural, Magnetic, and Electrochemical Properties of Tetramanganese Complexes Stabilized by Xanthene-Bridged Schiff Base Ligands

    No full text
    The reaction of manganeseĀ­(II) acetate with a xanthene-bridged bisĀ­[3-(salicylideneamino)-1-propanol] ligand, H<sub>4</sub>L, afforded the tetramanganeseĀ­(II,II,III,III) complex [Mn<sub>4</sub>(L)<sub>2</sub>(Ī¼-OAc)<sub>2</sub>], which has an incomplete double-cubane structure. The corresponding reaction using manganeseĀ­(II) chloride in the presence of a base gave the tetramanganeseĀ­(III,III,III,III) complex [Mn<sub>4</sub>(L)<sub>2</sub>Cl<sub>3</sub>(Ī¼<sub>4</sub>-Cl)Ā­(OH<sub>2</sub>)], in which four Mn ions are bridged by a Cl<sup>ā€“</sup> ion. A pair of L ligands has a propensity to incorporate four Mn ions, the arrangement and oxidation states of which are dependent on the coexistent anions
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