Ligand-Directed Metalation of a Gold Pyrazolate Cluster.

ABSTRACT: Solid "[AuL]" (HL = 3-[pyrid-2-yl]-5-tertbutyl-1H-pyrazole) can be crystallized as cyclic [Au₃(μ-L)₃] and [Au₄(μ-L)₄] clusters from different solvents. The crystalline tetramer contains a square Au₄ core with an HT:TH:TH:HT arrangement of ligand substituents, which preorganizes the cluster to chelate to additional metal ions via its pendant pyridyl groups. The addition of 0.5 equiv of AgBF₄ to [AuL] yields [Ag₂Au₄(μ₃-L)₄][BF₄]₂, where two edges of the Au₄ square are spanned by Ag⁺ ions via metallophilic Ag···Au contacts. Treatment of [AuL] with [Cu(NCMe)₄]PF_6</

SUBMITTER: Smith RA 

PROVIDER: S-EPMC10283019 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature