Syntheses, structures, and properties of two dinuclear palladium (II) complexes of a single macrocyclic hexaaza ligand with two hydroxyethyl pendants

A single macrocyclic ligand with two hydroxyethyl pendants L (L = 3,6,9,16,19,22-hexaaza-6,19-bis(2-hydroxyethyl)tricycle[22,2,2,211,14]triaconta-1,11,13,24,27,29-hexaene) was used to form two new dinuclear Pd(II) complexes of trans-[Pd2LCl2]2+ and cis-[Pd2LCl2]2+, which act as “inorganic proteases” to cleave Met-Ala bond in AcMet-Ala.