Monometallic nickel and bimetallic nickel-europium complexes based on oxydiacetic acid and N-heterocyclic ligands

摘要

Two new complexes [Ni_2(μ-bipy)(oda)_2(H _2O)_4]·2H_2O (1) and {[EuNi _2(oda)_3(dpds)_2 (H_2O) _4]·11H_2O}_n (2) (H_2oda = oxydiacetic acid, bipy = 4,4'-bipyridine, dpds = 4,4'-dipyridyl disulfide) have been successfully synthesized and characterized by IR spectrum, elemental analysis and single-crystal X-ray diffraction. Compound 1 is a bipy-bridged binuclear complex, which is further linked by O-H?O hydrogen bonds to form a 3D supramolecular architecture. Compound 2 shows a oda- and dpds-bridged 2D layer structure, which is extended by O-H?O and O-H?S hydrogen bonds generating a 3D network. The solid-state fluorescence and magnetic properties for 1 have been discussed in detail.