Heteroleptic lead and aluminium complexes ligated by a bulky non-symmetrical triazenide

Abstract

The sterically bulky non-symmetrical triazene, DmpN3(H)Dipp∗, was prepared. Amido lead triazenide and dimethyl aluminium triazenide complexes were readily prepared by metalation of the parent triazene. The former is a rare example of a stable heteroleptic lead triazenide complex. Analogous compounds are inaccessible when smaller triazenes are employed under these conditions, as they readily form homoleptic bis(aryl)triazenide complexes. Quantification of the bulk of this and other bidentate monoanionic N,N′-donor ligands, using the solid-state structures of model dimethyl aluminium complexes, help to rationalize the superior stability of the amido lead triazenide complex reported herein with regards to subsequent metalation.