Spherical Aromaticity of All‐Metal [Bi@In8Bi12 ]3−/5− Clusters

Document Type

Article

Journal/Book Title

Chemistry: A European Journal

Publication Date

12-18-2019

Publisher

Wiley‐VCH Verlag GmbH & Co. KGaA

Award Number

NSF, Division of Chemistry (CHE) 1664379

Funder

NSF, Division of Chemistry (CHE)

Volume

26

Issue

9

First Page

2073

Last Page

2079

Abstract

The chemical bonding of Zintl clusters is still an evolving and hot topic in modern chemistry. In this paper we synthesized a novel [K([2.2.2]crypt)]4[In8Bi13] complex in a condensed phase. The quantum chemical calculations and X‐ray data revealed that the compound consists of the 1:1 mixture of [Bi@In8Bi12]3− and [Bi@In8Bi12]5− clusters. To the date, those clusters are the largest binary clusters composed of In and Bi elements. Herein, we introduce a spherical aromatic description of chemical bonding for such clusters. We show through AdNDP, ELF, and induced magnetic field and quantitative NICS analyzes that both clusters are spherically aromatic which explains their high symmetry, stability, and peculiar magnetic properties. We believe that this work will help researchers in the further development and understanding of chemical bonding in Zintl clusters.

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