一维链状配位聚合物[Zn(bipy)(H_2O)_2SO_4]的合成及晶体结构表征

Synthesis and crystal structure of one-dimensional coordination polymers [Zn(bipy)(H_2O)_2SO_4]

The title complex was synthesized by reaction of 2,2′-bipyridine(bipy) and zinc sulfate heptahrdrate in water-methanol solution.The crystal structure was determined by elemental analysis and X-ray diffraction.The results show that the title complex belongs to monoclinic system with space group Cc and cell parameter: a = 1.5420(2) nm,b = 1.2696(2) nm,c = 0.6704(1) nm.β= 102.178(2)°.V = 1.2830(3) nm3,Z = 4,Dc = 1.831 g/cm3,μ= 2.104 mm-1,F(000) = 720.The Zn(Ⅱ) is coordinated by one bipy,two water molecules and one SO42-.At the same time,the Zn(Ⅱ) formed a distorted tetrasquare pyramid structure.The complex formed 1D straight chain by SO42-anion,and 1D chain assembled into double-stranded chain by π-π stacking interactions(ca:0.335(1) nm),furthmore,double-stranded chain extended to 2D network by O-H…O hrdrogen bonds,2D network constructed 3D supramolecular structure by C-H…O hrdrogen bonds.

The title complex was synthesized by reaction of 2,2＇-bipyridine （bipy） and zinc sulfate heptahrdrate in water-methanol solution. The crystal structure was determined by elemental analysis and X-ray diffraction. The results show that the title complex belongs to monoclinic system with space group Cc and cell parameter： a = 1.5420（2） nm, b = 1.2696（2） nm, c = 0.6704 （1） nm. β= 102.178（2）°.V = 1.2830（3） nm^3, Z = 4, De = 1.831 g/cm^3,μ= 2.104mm^-1, F（000） = 720. TheZn （ Ⅱ ） is coordinated by one bipy, two water molecules and one SO4^2- At the same time, the Zn（ Ⅱ ） formed a distorted tetrasquare pyramid structure. The complex formed 1D straight chain by SO4^2- anion, and 1D chain assembled into double-stranded chain by π-π stacking interactions （ ca ：0. 335 （ 1 ） nm ）, furthmore, double-stranded chain extended to 2D network by O-H…O hrdrogen bonds, 2D network constructed 3D supramolecular structure by C-H…O hrdrogen bonds.