Coordinate-polymerized organic ligand towards an efficient catalyst for selective hydrocarbon oxidation

Abstract

Here we show catalyst design based on an isoxazole derivative via a coordinate-polymerized strategy. Three new coordination polymers, [Co(bpp)(mpca)₂] (1), [Zn(bpp)(mpca)₂] (2), and [Cd(bpp)(mpca)₂] (3) [bpp = 1,3-bis(4-pyridyl)propane, mpca = 5-methyl-3-phenylisoxazole-4-carboxylic acid], have been synthesized under hydrothermal conditions. Single crystal X-ray diffraction analysis reveals that, compounds 1–3 exhibit similar wave-like chains, with mpca functioning as pendant phenyl-isoxazole arms. Catalytic experiments show that all three compounds can be used as efficient heterogeneous catalysts for the selective oxidation of cyclooctene.