一维链状镍(Ⅱ)配合物[Ni(L)(Mf)]n的合成、晶体结构及电化学性质

合成了1个含2-羟基苯乙酮缩水杨酰腙(H₂L)和单齿N-杂环分子吗啡啉(Mf)的镍(Ⅱ)配合物[Ni(L)(Mf)]_n,并通过元素分析、紫外光谱、热分析以及单晶衍射等手段进行表征。在配合物中,中心Ni(Ⅱ)与酰腙配体的酚氧、亚胺氮、去质子酰胺氧原子以及中性吗啡氮原子配位形成平面四方形的N₂O₂配位构型。配合物通过N-H(吗啡)…O(吗啡)分子间氢键作用构筑成一维超分子网络结构。采用循环伏安法研究了化合物的电化学性质。     

Synthesis and Crystal Structure of a New Zn(Ⅱ) Coordination Polymer Constructed by 1,2,4,5-Benzenetetracarboxylate

A new Zn(Ⅱ) coordination polymer [Zn3(btec)(OH)2(H2O)2]n (1, btec = 1,2,4,5- benzenetetracarboxylate) has been synthesized by hydrothermal reaction and its structure was determined by single-crystal X-ray diffraction analysis. The title compound crystallizes in mono- clinic, space group C2/c, with a = 19.580(3), b = 5.0137(8), c = 15.975(3), β = 121.629(2)°, V = 1335.3(4)3, C10H8O12Zn3, Mr = 516.27, Z = 4, Dc = 2.568g/cm3, μ = 5.419 mm-1, F(000) = 1016, R = 0.0590 and Rw = 0.1279 for 1110 observed reflections (I > 2σ(I)). X-ray analysis shows that the asymmetric unit of the title compound contains two crystallographically unique Zn(Ⅱ) atoms which are connected through the bridging carboxylate oxygen atoms of the btec ligands and μ2-bridging oxygen atoms of water molecules to generate an infinite one-dimensional chain. The adjacent chains are linked together through the benzene rings of the btec ligands to form a two-dimensional polymeric network. The adjacent two-dimensional layers are further connected together by the benzene rings of btec ligands to give the final three-dimensional structure. The benzene rings act as pillars between two layers.