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氰基桥联配合物的研究是分子基磁体研究领域的热点。文中将[Ni(L)](ClO4)2(L=3,10-di-ethyl-1,3,5,8,10,12-hexaazacyclotetradecane)的DMF溶液和K2[Ni(CN)4]的水溶液在填充了硅胶的U型管中通过缓慢扩散反应,得到了一个新型一维链状氰基桥联配位聚合物([Ni(L)][Ni(CN)4].2H2O)n,晶体结构测定结果表明:该配位聚合物属单斜晶系,空间群P21/n,晶胞参数为a=1.099 2(3)nm,b=1.019 9(2)nm,c=1.147 1(3)nm,α=γ=90°,β=92.174(4)°,V=1.285 1(5)nm3,Z=4,Dc=1.333 g.cm-3。标题化合物的基本单元由1个反式[NiL]2+、1个[Ni(CN)4]2-和2个水分子组成,[NiL]2+和[Ni(CN)4]2-通过氰桥交替排列而形成一维链状结构,[NiL]2+中的中心Ni原子为拉长的变型八面体构型,而[Ni(CN)4]2-中的中心Ni原子为平面四方结构。
Cyano-bridged complexes are the hot topics in the field of molecular-based magnets. In this paper, a DMF solution of [Ni (L)] (ClO4) 2 (L = 3,10-di-ethyl-1,3,5,8,10,12- hexaazacyclotetradecane) and a DMF solution of K2 [Ni (CN) 4] A novel one-dimensional chain-like cyano bridging coordination polymer [Ni (L)] [Ni (CN) 4] .2H2O) n was obtained by slow diffusion reaction in a silica gel- The results of crystal structure determination show that the coordination polymer belongs to the monoclinic system with a space group of P21 / n with a = 1.099 2 (3) nm, b = 1.019 9 (2) nm and c = 1.147 1 3) nm, α = γ = 90 °, β = 92.174 (4) °, V = 1.285 1 (5) nm3, Z = 4, Dc = 1.333 g.cm-3. The basic unit of the title compound consists of 1 trans [NiL] 2 +, 1 [Ni (CN) 4] 2- and 2 water molecules, and [NiL] 2+ and [Ni (CN) 4] 2- Cyanide bridges are alternately arranged to form a one-dimensional chain structure. The central Ni atom in [NiL] 2+ is an elongated modified octahedron and the central Ni atom in [Ni (CN) 4] 2- is a plane tetragonal structure.