The electron count affects the shape of Bi₆^q− units, from a regular prism in Bi₆²⁻ (left) to a regular crown-type cycle in Bi₆⁶⁻ (right). Such units were previously isolated in the coordination sphere of metal complexes, while the (less symmetric) intermediate with a −4 charge has only been predicted by theory. In their Research Article (e202417234), Florian Weigend, Stefanie Dehnen et al. isolated the Zintl cluster [Bi₆{Zn(hmds)}₂]²⁻ (center), in which two 12-electron fragments are perfectly suited to stabilize the boat-type Bi₆⁴⁻ unit, as confirmed by DFT calculations.

中文翻译：

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封面内页：12 电子过渡金属碎片对 {Bi6} 结构的电荷和结构的影响


电子数影响 Bi₆^q− 单元的形状，从 Bi₆²⁻ 中的正棱柱（左）到 Bi₆⁶⁻ 中的规则冠型循环（右）。这样的单元以前被隔离在金属配合物的配位球中，而具有 -4 电荷的（不太对称的）中间体仅通过理论预测。在他们的研究文章 （e202417234） 中，Florian Weigend、Stefanie Dehnen 等人分离了 Zintl 簇 [Bi₆{Zn（hmds）}₂]²⁻（中心），其中两个 12 电子碎片非常适合稳定船型 Bi₆⁴⁻ 单元，DFT 计算证实了这一点。