Chiral and Porous Coordination Polymers Based on an N-Centered Triangular Rigid Ligand

Four cadmium and cobalt coordination polymers with unique structures and topologies have been successfully synthesized under solvothermal conditions by employing an elongated triangular rigid N-containing ligand tris(4-(1H-imidazol-1-yl)phenyl)amine (TIPA) and 5-hydroxyisophthalic acid (5-OH-H(2)bdc) as anion coligand. Compounds 1-4 were characterized by single crystal X-ray structure analyses, thermogravimetric analyses, SHG, and photoluminescent measurements. Compound I crystallizes in the chiral space group C2 (No. 5) and features a 2D -> 3D parallel/parallel inclined polycatenated framework. Compound 2 crystallizes in trigonal symmetry with a high-symmetry space group R (3) over bar and features a 2D porous noninterpenetrating coordination network. Compound 3 crystallizes in the monoclinic space group P2(1)/n and shows a 2D -> 3D parallel/parallel polycatenation framework, and compound 4 crystallizes in the orthorhombic chiral space group P2,2,2, (No. 19) and shows a very rarely 3D + 3D heterogeneous 2-fold interpenetration framework built from (3,5)-connected (4(2).6(5).8(3))(4(2).6) AFUQOH nets and (3,5)-connected (6(3))(6(9).8) gra nets.