First Three-Dimensional Self-Penetrating Coordination Polymer Containing Rare (10,3)-d Subnets: Synthesis, Structure, and Properties

Hydrothermal assembly of Zn-II ion, a tripodal ligand with both flexible imidazole and rigid carboxylate groups [HL = 3,5-bis(imidazol-1-ylmethyl)benzoic acid hydrochloride], and rigid bidentate linker 5-iodoisophthalic acid (5-iipa) yields a novel three-dimensional (3D) self-penetrating metal-organic framework [Zn-2(L)(2)(5-iipa)](n) (1). Complex 1 exhibits a (6(2).8)(6(3).8.10(2)) topology that is unprecedented with the rare (10,3)-d (or utp) subnets. In addition, photoluminescence was also performed on 1.