Main group metal lone-pair⋯π(arene) interactions: a new bonding mode for supramolecular associations. Issue 37 (15th August 2016) - Caracelli, Ignez
Abstract : Main group element(lone-pair)⋯π(arene) interactions provide points of contact, independently of other supramolecular synthons, in their crystal structures. Abstract : Crystal structures of the heavier main group elements in low oxidation states have been evaluated for the presence of supramolecular element(lp)⋯π(arene) interactions that are structure-directing. It is revealed that when present, these interactions lead to zero-dimensional, binuclear aggregates but higher-nuclearity species are sometimes observed, with one-dimensional supramolecular chains of varying topology being prominent. By contrast, two-dimensional aggregation based on element(lp)⋯π(arene) interactions are rare. In summary, interactions of main group metal lone-pairs with aromatic rings are revealed as synthons capable of assembling molecules into supramolecular aggregates.