Selective complexation and reactivity of metallic nitride and oxometallic fullerenes with Lewis acids and use as an effective purification method.

Selective complexation and reactivity of metallic nitride and oxometallic fullerenes with Lewis acids and use as an effective purification method.
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金属氮化物和氧合富勒烯与路易斯酸的选择性络合和反应性,并用作有效的纯化方法。

DOI:
10.1021/ic9017147
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发表时间:
2009-12-21
影响因子:
4.6
通讯作者:
Phillips, J. Paige
Phillips, J. Paige
中科院分区:
化学2区
文献类型:
--
作者:
Stevenson, Steven;Mackey, Mary A.;Pickens, Jane E.;Stuart, Melissa A.;Confait, Bridget S.;Phillips, J. Paige

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金属氮化物富勒烯 (MNF) 和氧金属富勒烯 (OMF) 与一系列路易斯酸快速反应。空笼富勒烯在本研究中使用的条件下基本上不发生反应。反应活性顺序为 Sc4O2@Ih-C80 > Sc3N@C78 > Sc3N@C68 > Sc3N@D5h-C80 > Sc3N@Ih-C80。在选择性沉淀方案中演示了 OMF 和 MNF 金属富勒烯家族内路易斯酸、摩尔比和动力学差异的操作,该方案可以单独用于纯化 Sc3N@Ih-C80,也可以与 Sc4O2@Ih-C80、Sc3N@D5h-C80、Sc3N@C68 或 Sc3N@C78 的最终 HPLC 结合使用。纯化过程是可扩展的。实验速率常数与电化学带隙的分析解释了 OMF 和 MNF 之间的反应顺序。
Metallic nitride fullerenes (MNFs) and oxometallic fullerenes (OMFs) react quickly with an array of Lewis acids. Empty-cage fullerenes are largely unreactive under conditions used in this study. The reactivity order is Sc4O2@Ih-C80 > Sc3N@C78 > Sc3N@C68 > Sc3N@D5h-C80 > Sc3N@Ih-C80. Manipulations of Lewis acids, molar ratios and kinetic differences within the family of OMF and MNF metallofullerenes are demonstrated in a selective precipitation scheme, which can be used either alone for purifying Sc3N@Ih-C80 or combined with a final HPLC pass for Sc4O2@Ih-C80, Sc3N@D5h-C80, Sc3N@C68, or Sc3N@C78. The purification process is scalable. Analysis of experimental rate constants versus electrochemical band gap explains the order of reactivity among the OMF and MNFs.
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