A 3-D Supramolecular Network with 1-D Cation Metal-organic Coordination Polymers and Diverse Motifs from Hydrogen-bonded [M(H_2O)_4]-Carboxylates

One-pot solvothermal reaction of transition metal ZnII salt with 4,4-bipyridyl (bpy) and 1,4-benzenediacrylic acid (H2L) in the presence of Et3N generates a three-dimensional (3-D) supramolecular network with 1-D cation metal-organic coordination polymer,[Zn(H2O)4(bpy)]·L 1,and structurally characterized by single-crystal X-ray diffraction,elemental analyses,IR spectroscopy,and photoluminescent property. The complex crystallizes in triclinic,space group P1 with a=7.1291(2),b=7.3784(3),c=10.5042(3),α=95.049(2),β=102.162(2),γ=97.027(3)o,V=532.38(3)3,C22H24N2O8Zn,Mr=509.82,Dc=1. 590 g/cm3,μ(MoKα)=1.207 mm-1,F(000)=264,Z=1,the final R=0.0438 and wR=0.1011 for 1589 observed reflections (I 2σ(I)). In the crystal structure,the second building unit composed of [Zn(H2O)4]·L constructs two distinct 2-D supramolecular sheets and a neutral 3-D architecture. The title compound 1 shows strong photoluminescence with emission maximum at λ=455 nm upon λex,max=355 nm.