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[Mn13O8(OEt)6(O2CPh)12] was prepared and its X-ray structure has been determined. It is the largest cluster in which there are three oxidation states of a given metal ion in one molecule. The core of the complex is a supercubane [MnIVMnIII6MnII6(μ5-O)6(μ3-O)2(μ3-OEt)6]12+. The magnetochemistry of the compound shows that only weak antiferromagnetic exchange interactions are present, and the ground state has ST = 15/2. Six novel μ5-oxide ions support the frame of the supercubane.
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Sun et al. (1996) studied this question.
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