Supramolecular architectures based on di-, tri- and tetrameric complexes with N,N′-diacylhydrazide ligands

Based on two different N,N′-diacylhydrazides by changing the terminal groups from propionyl to 3-carboxy-cis-2-propenoyl, we have obtained five transition metal complexes with polynuclear structures. Two ligands exhibit diverse coordination modes due to the deprotonation and flexibility as well as different coordination geometry of metal centers. Through different O-H⋯O, C-H⋯O and C-H⋯π weak interactions, novel supramolecular nets are obtained.