Synthesis and solution behaviour of stable mono-, di- and trinuclear Pd(II) complexes of 2,5-pyridinedihydroxamic acid: X-ray crystal structure of a novel Pd(II) hydroxamato complex

► Mono-, di- and trinuclear Pd(II) complexes of 2,5-pyridinedihydroxamic acid. ► X-ray structure of mononuclear Pd(II) complex featuring novel (Npy,N) binding mode. ► Stability constants for mono-, di- and trinuclear Pd(II) complexes. ► Formation of mononuclear Pd(II) complex favoured at 1:1 metal:ligand ratio. ► Formation of trinuclear Pd(II) complexes favoured at an excess of Pd(II).