Solvent induced structural variation in magnesium carboxylate frameworks

Four magnesium-based coordination polymers, formulated as Mg(ndc)(dmi) (1), Hdmu⋅Mg2(ndc)2(OH)(dmu)4 (2), Mg(ndc)(dma) (3), and Mg(ndc)(nmp)·0.5H2O (4), were prepared in an effort to investigate the effect of organic solvents on the framework structures. Compounds 1 and 2 have layered structures with a sql topology. Compounds 3 and 4 have three-dimensional structures with 4-connected pts and lvt-b topologies, respectively. The solvents exhibit multiple functions in the solvothermal reactions as a terminal ligand, bridging ligand, and charge-balancing agent.