A novel tetranuclear (Mn2Mn2III)-Mn-II cluster [Mn-4(hmp)(6)(N-3)(4)]: Synthesis, crystal structure and magnetic properties

作者：Lu Zhengliang^*; Fan Chunhua

来源：Inorganic Chemistry Communications, 2011, 14(9): 1329-1332.

DOI：10.1016/j.inoche.2011.05.006

• Manganese cluster
• Mixed-valence
• 2-hydroxymethylpyridine
• Crystal structure
• Magnetism

A novel tetranuclear mixed-valence manganese(II/III) cluster [Mn-4(hmp)(6)(N-3)(4)] (1) where hmp is the anion of 2-hydroxymethylpyridine, was obtained by the reaction of manganese perchlorate with hmpH and NaN3 in acetonitrile. Complex 1 was characterized by chemical analysis, IR spectroscopy, single crystal X-ray diffraction and variable-temperature magnetic susceptibility studies. Complex 1 crystallizes in triclinic system with space group PI consisting of mixed-valence Mn ions whose coordination geometry can be described as distorted octahedron. The magnetic properties were studied in the temperature range of 1.9-300 K and the results show that mixed-valence Mn ions are ferromagnetically coupled in the cluster leading to an S=9 ground state.

• 出版日期2011-9
• 单位济南大学