Unusually short unsupported Au(<scp>iii</scp>)⋯Au(<scp>iii</scp>) aurophilic contacts in emissive lanthanide tetracyanoaurate(<scp>iii</scp>) complexes

Abstract

groups, with Au⋯Au distances of 3.3603(4) Å and 3.4354(4) Å that are shorter than any previously reported. Computations predict the interactions to be weakly attractive; packing effects appear to also contribute to the close contacts. The materials are emissive: there is no Au(III)-based luminescence, but for Ln = Eu the PLQY of 29% is surprisingly high compared to related analogues.

Topics & Concepts