A Mn12 single-molecule magnet [Mn12O12(OAc)12(dpp)4] (dppH = diphenyl phosphate) with no coordinating water molecules.
A Mn12 single-molecule magnet [Mn12O12(OAc)12(dpp)4] (dppH = diphenyl phosphate) with no coordinating water molecules.
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DOI：
10.1021/ic049306n
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发表时间：
2004-07
影响因子：
4.6
通讯作者：
Guo-qing Bian;T. Kuroda–Sowa;H. Konaka;Masaki Hatano;M. Maekawa;M. Munakata;H. Miyasaka;M. Yamashita
中科院分区：
文献类型：
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作者：
Guo-qing Bian;T. Kuroda–Sowa;H. Konaka;Masaki Hatano;M. Maekawa;M. Munakata;H. Miyasaka;M. Yamashita
报道了无配位水分子的新型单分子磁体[Mn(12)O(12)(OAc)(12)(dpp)(4)] （dppH =二苯基磷酸）的制备和物理表征。晶体结构分析表明，Mn（III）有4个五坐标Mn（III）离子。通过(1)H NMR监测CD(2)Cl(2)溶液中水的加入情况，发现H(2)O可以配位到溶液中五坐标Mn（III）离子的空位上。磁化滞后和交流磁化率的测量和分析表明，标题配合物是具有量子隧穿行为的单分子磁体，其基态暂定为S = 10, g = 1.78, D = -0.60 K。
The preparation and physical characterization are reported for a novel single-molecule magnet [Mn(12)O(12)(OAc)(12)(dpp)(4)] (dppH = diphenyl phosphate) with no coordinating water molecules. The crystal structure analysis reveals that there are four five-coordinate Mn(III) ions with Mn.H approaches. Addition of water in CD(2)Cl(2) solution was monitored by (1)H NMR, which showed that H(2)O could coordinate to a vacant site of a five-coordinate Mn(III) ion in solution. The measurements and analyses of magnetization hysteresis and ac magnetic susceptibility indicate that the title complex is a single-molecule magnet with a quantum tunneling behavior, whose ground state was tentatively assigned to S = 10 with g = 1.78 and D = -0.60 K.