Synthesis and Characterization of Zinc(II) Complexes Bearing 4‑Acridinol and 1‑Phenazinol Ligands

The synthesis and characterization of zinc­(II) chelates bearing acridin-4-ol (A), phenazin-1-ol (P), and benzo­[b]­phenazin-1-ol (bP) are presented. The formation of homoleptic (ZnX 2 ) or heteroleptic (ZnX 1 ) products can be controlled by stochiometric or excess amounts of zinc­(II) acetylacetonate monohydrate, Zn­(acac)2, respectively. Electrochemical and photophysical studies show that the homoleptic complexes (ZnA 2 , ZnP 2 , and ZnbP 2 ) have ligand-centered properties inherited from the corresponding free ligands. Calculations using density functional theory (DFT) agree with the observed experimental ligand-centered photophysical and electrochemical behavior.