Two Mn6 single-molecule magnets with sulfur-contained capping ligand |
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| Authors: | Chang-Long ZhouZhe-Ming Wang Bing-Wu Wang Song Gao |
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| Affiliation: | Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China |
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| Abstract: | The reactions of Mn(ClO4)2·6H2O, 1-(2-hydroxyphenyl)ethanone oxime (abbr. as MeSao), NEt3 and thiophene-2-carboxylic acid/thiophene-3-carboxylic acid (2-TCA/3-TCA) lead to [Mn6O2(MeSao)6(2-TCA)2(EtOH)4(H2O)2](EtOH)2 (1) and [Mn6O2(MeSao)6(3-TCA)2(EtOH)4(H2O)2](EtOH)2 (2), respectively. Their structures can be described as a core of the [MnIII6O2(Mesao)6(O2C-thiophene)2(EtOH)4] consisting two off-set, stacked [MnIII3(μ3-O2−)]7+ triangular subunits linked by two central oximato O-atoms and two O-atoms from phenoxide group. Magnetic investigation revealed that 1 and 2 all have a spin ground state S = 4, and both complexes show single-molecule magnet behaviors with similar energy barriers Ueff ∼45 K. |
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| Keywords: | Mn6 cluster Oximato ligands Single-molecule magnet |
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