New chiral Sr(II) coordination polymer constructed from achiral 1,3,5-benzenetricarboxylic acid

A new chiral Sr(II) compound, namely [Me2NH2]2n[Sr5(BTC)4(H2O)5]n (1 H3BTC = 1,3,5-benzenetricarboxylic acid), has been synthesized from achiral BTC ligands and corresponding metal salt. Single-crystal X-ray diffraction analysis revealed that it crystallized in the chiral space group C2221 and is a three-dimensional (3D) pillar-layered framework consisting of interesting crown-like tetranuclear [Sr4(COO)6(O1w)] clusters, which is rarely reported in the alkaline-earth metal coordination polymers. Moreover, this compound exhibits strong ligand-centered blue luminescence at room temperature.