Aurophilicity in action: stepwise formation of dinuclear Au(i) macrocycles with rigid 1,8-dialkynylanthracenes

Dalton Trans. 2019 Mar 26;48(13):4109-4113. doi: 10.1039/c8dt04783a.

Abstract

Two phosphane-gold(i) functions (with tri(para-tolyl)- or tri-n-butylphosphane) were attached to a 1,8-diethynylanthracene backbone. The ligand size prevents direct interaction between the gold atoms, but the initial products rearrange to form macrocyclic anions comprising two 1,8-diethynylanthracene and two gold units, linked to cationic gold(i) fragments by maximising aurophilic interactions.