Series of Mn(II)/Mg(II)/Zn(II) Coordination Polymers with Azo/Alkene Functionalized Ligands

Abstract

A series of six novel coordination polymers based on Mn(II)/Mg(II)/Zn(II) metal ions with azo/alkene functionalized carboxylic acid have been synthesized and well-characterized using several state-of-art techniques. Compound 1, {[Mn2(ABDCA)2(DPE)(DMF)2]·2DMF}n, (where ABDCA = Azobenzene-4,4′-dicarboxylic acid, DPE = 1,2-Di(4-pyridyl)ethylene, and DMF = N,N′-Dimethylformamide) is a three-dimensional structure with threefold interpenetration. Compound 2, {[Mn3(ABDCA)3(DMF)4]·2DMF}n contains Mn3O16 cluster unit which is connected with ABDCA ligands to form a two-dimensional layered structure. Compound 3, {[Mg3(ABDCA)3(DMF)4]·4DMF}n contains Mg3O16 clusters, associated with ABDCA ligands, forming the 3D structure. Coordination polymers 4 and 5 ({[Zn(ABDCA)(2,2′-BPy)]·H2O}n, (4), {[Zn(SDCA)(2,2′-BPy]}n, (5)), respectively, (where SDCA = stilbene-4,4′-dicarboxylic acid and 2,2′-BPy = 2,2′-Bipyridine) are identical structures with a difference in carboxylate ligand. In both cases, the one-dimensional chains are ...