A homochiral Cu(II) coordination polymer built from helical motif based on two V-shaped ligands

摘要

By using a V-shaped N-containing ligand and a V-shaped carboxylate ligand, we have successfully synthesized a 3D novel copper homochiral coordination polymer, namely [Cu(OPY)(1,3-bdc)]_n (complex 1), [1,3-H2bdc = isophthalic acid, OPY = 4,4'-(oxybis(4,l-phenylene))dipyridine]. The compound has been solvothermally synthesized and characterized by IR, elemental analysis, single crystal X-ray diffraction, XRD, UV-vis, and TG analysis. The complex 1 crystallizes in the chiral space group P6_5 and possesses an unprecedented uninodal 3D 7~5·8 topology. However, the complex was synthesized by achiral materials. The complex 1 displays a moderate SHG response and its SHG efficiency is about 03 times that of urea. In addition, the compound shows high thermal stability.