Oxidative Cleavage of Triethylenetetramine (trien) to Yield Diethylenetriamine (dien): Structure of the Mn^{<scp>II</scp>}/Mn^{<scp>III</scp>} Heptanuclear Complex [Mn₇(trien)₂(dien)₂O₄(OAc)₈](PF₆)₄·2H₂O

Abstract

Two [Mn4(μ3-O)2] moieties with butterfly structure, which are coupled via a common Mn atom, are present in the cation of the title compound (structure with coordinated N () and O atoms () shown below). The complex cation, which contains six MnIII centers and one MnII center, is formed in the reaction of manganese(II) acetate and triethylenetetramine in methanol. During the reaction a part of the tetramine ligand is cleaved oxidatively with formation of diethylenetriamine.