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通过新合成的吡啶基羧酸席夫碱配体(5-(吡啶基-3-亚甲基氨基)间苯二甲酸H2L),和镍盐反应制备了一个新的镍配合物{[Ni(HL)2(H2O)2].2H2O}n(1),利用元素分析及X-射线单晶衍射对其进行了表征。结构分析结果表明标题化合物属于三斜晶系,P1空间群,晶胞参数为a=0.764 79(11)nm,b=0.870 49(13)nm,c=1.081 13(16)nm,α=85.583(2)°,β=82.614(2)°,γ=81.565(2)°,V=0.704 82(18)nm3,Z=1,Dc=1.586 g.cm-3,μ=0.763 mm-1,F(000)=350。在配合物的结构中,Ni(Ⅱ)的配位构型为畸变的八面体。配合物中每个配体通过羧酸氧和吡啶氮原子和金属配位形成一维链状结构,并通过体系中丰富的氢键作用链接成为三维框架并加以稳定。
A new nickel complex {[Ni (superscript 2 +)] 2 was prepared by the reaction of the newly synthesized pyridinecarboxylic acid Schiff base ligand (5- (pyridyl-3-methyleneamino) isophthalic acid H2L) HL) 2 (H2O) 2] .2H2O} n (1), which was characterized by elemental analysis and X-ray single crystal diffraction. The results of structural analysis indicate that the title compound belongs to the triclinic system with P1 space group. The unit cell parameters are a = 0.764 79 (11) nm, b = 0.87049 (13) nm, c = 1.081 13 (2) °, β = 82.614 (2) °, γ = 81.565 (2) °, V = 0.704 82 (18) nm3, Z = 1, Dc = 1.586 g.cm-3, μ = 0.763 mm-1, F (000) = 350. In the complex structure, the coordination configuration of Ni (Ⅱ) is distorted octahedron. Each ligand in the complex forms a one-dimensional chain structure by coordination of the carboxylic acid oxygen and the pyridine nitrogen atom with the metal and becomes a three-dimensional framework and is stabilized by the abundant hydrogen bonding in the system.