A New Trinodal (3,4,6)-Connected Ni(II) Coordination Polymer Based on the Mixed Ligands of 6-(3′,4′-Dicarboxyl-Phenoxy) Isophthalic Acid and 4,4′-Bipyridine

Reported here is a new Ni(II) compound, namely {Ni2(L)(bipy)2(H2O)2}n (1 H4L = 6-(3′,4′-dicarboxyl-phenoxy)isophthalic acid, bipy = 4,4′-bipyridine), which has been synthesized via the solvothermal reactions of Ni(NO3)2·6H2O, H4L and bipy. Single crystal X-ray analysis reveals that compound 1 crystallizes in triclinic P-1 space group with cell parameters a = 9.8887(6), b = 9.9884(4), c = 19.2310(11), α = 79.187(4), β = 83.862(5), γ = 80.708(4). The title compound features a three-dimensional (3D) framework and can be simplified into a trinodal (3,4,6)-connected topological network. Moreover, the thermal and luminescent properties of compound 1 were also investigated.