Giant heterometallic Cu17Mn28 cluster with Td symmetry and high-spin ground state
Giant heterometallic Cu17Mn28 cluster with Td symmetry and high-spin ground state
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DOI：
10.1021/ja065707l
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发表时间：
2007-02-07
影响因子：
15
通讯作者：
Hendrickson, David N.
中科院分区：
文献类型：
--
作者：
Wang, Wen-Guo;Zhou, Ai-Ju;Hendrickson, David N.
铜粉与Mn(OAc)(2)中心点4H(2)O和三乙醇胺在二甲基甲酰胺溶液中在空气中反应生成高核度的混价(Cu4Cu13Mn4Mn12Mn12IV)-Cu-I-Mn-II-Mn-II-Mn-III团簇。X-射线单晶分析表明，1含有一个前所未有的金刚烷型Mn-28核，全部由Mn4O4立方烷基团连接。磁化率数据表明，在低磁场下存在S=51/2基态，S=63/2激发态仅比基态能量高5K。
Reaction of copper powder with Mn(OAc)(2)center dot 4H(2)O and triethanolamine in DMF solution in air yields a high nuclearity, mixed-valent (Cu4Cu13Mn4Mn12Mn12IV)-Cu-I-Mn-II-Mn-II-Mn-III cluster. X-ray crystallography shows that 1 contains an unprecedented adamantane-like Mn-28 core connected wholly by Mn4O4 cubane units. Magnetic susceptibility data indicate a S = 51/2 ground state in low magnetic field with a S = 63/2 excited state only 5 K in energy above the ground state.