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首页> 外文期刊>Crystal growth & design >Perfectly ordered two-dimensional layer structures found in some endohedral metallofullerenes
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Perfectly ordered two-dimensional layer structures found in some endohedral metallofullerenes

机译：在一些内面金属富勒烯中发现的完美有序的二维层结构

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摘要

A two-dimensional (2D) arrangement of metallofullerenes for both M@C _(82) (isomer I) (M = Y, La, Ce, Pr) and (M_2C _y)@C_(82) (isomer III) (M = Er, y = 0, 2; M = Sc, y = 2) is crystallized with a 1:2 fullerene/toluene molecular ratio. The determined crystal is a 2D layered structure, which is composed of metallofullerene layers sandwiched by the toluene layers. Although the M@C_(82)(I) arrangement in a 1:1 crystal is almost identical to that of (M_2C _y)@C_(82)(III), the M@C_(82)(I) arrangement in a 1:2 crystal is different from (M_2C_y)@C_(82)(III). It is found that the difference of the molecular arrangement strongly correlates with an orientation of metallofullerenes in a 2D layer. Our findings suggest the existence of a subtle but important interaction between the confined atoms/molecules and the solvent molecules/toluene through the carbon cage, which leads to a guiding principle of crystallization control with a solvent ingredient for metallofullerenes.
机译：M @ C _（82）（异构体I）（M = Y，La，Ce，Pr）和（M_2C _y）@C_（82）（异构体III）的金属富勒烯的二维（2D）排列（M ＝ Er，y ＝ 0，2; M ＝ Sc，y ＝ 2）以1∶2的富勒烯/甲苯分子比结晶。所确定的晶体是二维分层结构，其由夹在甲苯层之间的金属富勒烯层组成。尽管1：1晶体中的M @ C_（82）（I）排列几乎与（M_2C _y）@C_（82）（III）相同，但M @ C_（82）（I）排列中1：2晶体不同于（M_2C_y）@C_（82）（III）。发现分子排列的差异与二维层中金属富勒烯的取向强烈相关。我们的发现表明，受限原子/分子与溶剂分子/甲苯之间通过碳笼存在微妙但重要的相互作用，这导致了用金属富勒烯的溶剂成分进行结晶控制的指导原则。

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