Study of the dynamics of ferrocene enclathrated in β‐ and γ‐cyclodextrins by one‐dimensional switching‐angle sample spinning NMR spectroscopy
Study of the dynamics of ferrocene enclathrated in β‐ and γ‐cyclodextrins by one‐dimensional switching‐angle sample spinning NMR spectroscopy
复制标题
一维转换角样品旋转核磁共振波谱研究β-和γ-环糊精包合二茂铁的动力学
DOI：
10.1002/mrc.1260300817
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发表时间：
1992
影响因子：
2
通讯作者：
T. Terao
中科院分区：
文献类型：
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作者：
F. Imashiro;D. Kuwahara;N. Kitazaki;T. Terao
采用一维开关角样品自旋核磁共振波谱法测定了β -和γ -环糊精包合的二茂铁的13C化学位移粉末模式。二茂铁分子在γ‐环糊精中以69°的进动角进动。在β‐环糊精中，二茂铁分子I-III在不同动态下的包合密度分别为0.42、0.32和0.26；二茂铁I包合紧密，绕其五重轴旋转，而二茂铁II和三茂铁分别以30°和42°的进动角进行进动。
13C chemical shift powder patterns of ferrocene enclathrated in β‐ and γ‐cyclodextrins were measured by one‐dimensional switching‐angle sample spinning NMR spectroscopy. The ferrocene molecules were found to precess with a precession angle of 69° in γ‐cyclodextrin. In β‐cyclodextrin the ferrocene molecules I–III, in different motional states, were enclathrated with populations of 0.42, 0.32 and 0.26, respectively; ferrocene I is tightly enclathrated and rotates around its fivefold axis, whereas ferrocenes II and III precess with precession angles of 30° and 42°, respectively.
J.Ashida：“通过选择性射频辐射和切换角旋转对重叠粉末图案进行 1D NMR 分离”Chem.Phys.Lett。
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