论文标题
通过偏转测量值探测氦纳米圆形中金属 - 富烯电子转移反应的存在和不存在
Probing the presence and absence of metal-fullerene electron transfer reactions in helium nanodroplets by deflection measurements
论文作者
论文摘要
金属 - 富集烯化合物的特征是向富勒烯笼的电子转移显着，从而产生了电偶极矩。我们使用静电束挠度的方法来验证这种反应是否发生在嵌入式C $ _ {60} $分子之间的超流体氦纳米圆形中，以及碱（Heliophopic）还是稀土（Heliophilic）原子。这两种情况导致了明显不同的结果：c $ _ {60} $ na $ _n $（$ n $ = 1-4）显示没有可辨的偶极力矩，而c $ _ {60} $ yb是极性的。这表明，尽管富勒烯和小碱簇未能在氦基质中形成电荷转移键，尽管它们的吸引力很强。另一方面，c $ _ {60} $ yb偶极矩与离子复合物的预期值一致。
Metal-fullerene compounds are characterized by significant electron transfer to the fullerene cage, giving rise to an electric dipole moment. We use the method of electrostatic beam deflection to verify whether such reactions take place within superfluid helium nanodroplets between an embedded C$_{60}$ molecule and either alkali (heliophobic) or rare-earth (heliophilic) atoms. The two cases lead to distinctly different outcomes: C$_{60}$Na$_n$ ($n$=1-4) display no discernible dipole moment, while C$_{60}$Yb is strongly polar. This suggests that the fullerene and small alkali clusters fail to form a charge-transfer bond in the helium matrix despite their strong van der Waals attraction. The C$_{60}$Yb dipole moment, on the other hand, is in agreement with the value expected for an ionic complex.
