Synthesis, crystal structures, and luminescent properties of Zn(ii), Cd(ii), Eu(iii) complexes and detection of Fe(iii) ions based on a diacylhydrazone Schiff base

摘要: Acylhydrazone Schiff bases are rich in N and O atoms to coordinate with metal ions form multidentate complexes. In this study, a novel diacylhydrazone base (N′1E,N′4E)-N′1,N′4-bis(2-hydroxy-5-nitrobenzylidene)succinohydrazide (H4L) was synthesized from the condensation of nitrosalicylaldehyde succinic dihydrazide. The interactions H4L common monovalent, divalent trivalent were investigated by ultraviolet spectroscopy fluorescence spectroscopy. results showed that had no obvious effect on monovalent (Li+, Na+, K+), but reacted most ions, single selectivity recognition Fe3+ ions. More importantly, three kinds binuclear molecular structures, [Zn2(H2L)2]·5DMF (Zn-L), [Cd2(H2L)2]·DMF·H2O (Cd-L) [Eu2(H2L)3]·6DMSO (Eu-L), have been studied further illustrate interaction mode addition, optical properties these crystallized complexes DMF solution.