Supramolecular Architectures Based on M (lone pair)…π(arene) Interactions for M  S e and T e

Abstract

An overview of intermolecular interactions occurring between each of selenium and tellurium centers, in both the +II and +IV oxidation states (i.e. with two and one available lone pairs) with arene rings, that is M(lone pair) ⋯ π(arene) interactions, in their crystal structures is presented. These M(lone pair) ⋯ π(arene) interactions are proven to be important in stabilizing supramolecular architectures in their respective solid‐state structures. Thus, when operating in isolation of other intermolecular forms of association, for example hydrogen bonding and secondary interactions, M(lone pair) ⋯ π(arene) interactions usually lead to either zero‐ and one‐dimensional supramolecular aggregation patterns often sustained by one donor and one acceptor M(lone pair) ⋯ π(arene) interaction per molecule. Intriguingly, examples are also presented for two‐ and even three‐dimensional architectures stabilized by this supramolecular synthon alone, indicating that some molecules, often with higher nuclearity, can form multiple M(lone pair) ⋯ π(arene) interactions. Rarely, when the selenium or tellurium center is in the +II oxidation state does the element form two such interactions. In conclusion, it is suggested that any complete analysis of any selenium‐ or tellurium‐containing crystal structure should include an evaluation for M(lone pair) ⋯ π(arene) interactions.