Cyclopalladated derivatives of 2,4′-bipyridine

Abstract

2,4′-Bipyridine (C₁₀H₈N₂) reacts with palladium(II) acetate in acetic acid to form the cyclopalladated dimer [{Pd(C₁₀H₇N₂)(µ-O₂CMe)}₂]. Metathesis with aqueous lithium chloride results in the formation of the chloro-bridged analogue [{ Pd(C₁₀H₇N₂)(µ-Cl)}₂], which reacts with monodentate or bidentate ligands to form mononuclear complexes [PdCl(C₁₀H₇N₂) L], [Pd (C₁₀H₇N₂) L₂]Cl (L = PBuⁿ₃) or [Pd(C₁₀H₇N₂)L](L = pentane-2,4-dionate or S₂CNEt₂) respectively.