一维链状配位聚合物{[Cd2(1，8-nap)2(H2O)2](bpp)2}n的水热合成、晶体结构及荧光性质

The title complex, {[Cd₂(1,8-nap)₂(H₂O)₂](bpp)₂}_n(1), a cadmium complex based on mixed naphthalene-1,8-dicarboxylate (1,8-nap) and flexible 1,3-bi(4-pyridyl)propane (bpp) ligands, has been hydrothermally synthes-ized. It consists of a one-dimensional chain along c axis, which is derived from dimeric unit [Cd₂(1,8-nap)₂(H₂O)₂] linked by a pair of bpp ligands. In every [Cd₂(1,8-nap)₂(H₂O)₂] dimeric unit, two 1,8-nap act as bridging ligands to connect two Cd(Ⅱ) atoms, forming a sixteen-membered ring. Each Cd(Ⅱ) atom is in a distorted octahedral environment, coordinated by one aqua, two 1,8-nap and two bridging bpp ligands. In addition, two bridging bpp ligands connected two neighboring Cd(Ⅱ) atoms form a twenty-four-membered ring. The TGA and Luminescence property in solid state of complex 1 have been further studied and discussed in this paper. CCDC: 669293.     

由苯骈咪唑-5-羧酸构筑的Cd(Ⅱ)配合物的水热合成、晶体结构和荧光性质

通过水热合成的方法得到1个由苯骈咪唑-5-羧酸(HL)配体构筑的Cd(Ⅱ)配合物[Cd(L)₂(H₂O)]_n。在配合物中,镉中心为变形的八面体配位构型。每个配体连接着2个镉原子,每个镉原子通过4个配体相互连接,在bc面上形成以平行四边形为基本结构单元的二维层状结构,层与层之间通过N-H…O和O-H…O氢键连接形成三维超分子网络结构。此外,我们还研究和讨论了配合物的固态荧光性质。     

Hydrothermal Syntheses and Crystal Structures of Two Complexes with Cyclic Dimer and 2D Network Structures of 3-Nitrophthalate and N-Donor Ligand

Two complexes, [Cd(nphth)(2,2'-bipy)(H2O)]2·2H2O(1) and [Cd(nphth)(4,4'-bipy)(H2O)]n(2)(nphth = 3-nitrophthalate, 2,2'-bipy = 2,2'-bipyridine, 4,4'-bipy = 4,4'-bipyridine), were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in triclinic with space group P1, a = 0.7599(4), b = 1.0551(6), c = 1.2448(6) nm, α = 88.96(2), β = 75.40(2), γ = 76.76(2)°, V = 0.9393(9) nm3, Z = 1, Dc = 1.816 Mg/m3, F(000) = 512, μ = 1.217 mm-1, S = 0.946, the final R = 0.0238 and w R = 0.0631. Complex 2 crystallizes in monoclinic, space group P21/c, a = 0.737(5), b = 2.338(1), c = 1.0030(6) nm, β = 96.359(9)°, V = 1.803(2) nm3, Z = 4, Dc = 1.826 Mg/m3, F(000) = 984, μ = 1.260 mm-1, S = 1.016, the final R = 0.0455 and wR = 0.1007. Complex 1 exhibits a discrete cyclic binuclear structure and complex 2 possesses a 2D layer structure with cyclic binuclear unit. The fluorescent spectrum study shows that complex 1 exhibits fluorescent emission in the solid state at room temperature.