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采用水热法合成了标题配位聚合物{[Cu2(dhbd)(bipy)2]?10H2O}n(H4dhbd=2,3-二羟基丁二酸,bipy=2,2’-联吡啶),通过元素分析、红外光谱、热分析、X射线单晶衍射等技术对其进行了表征.配合物属单斜晶系,空间群C2/c,a=2.1965(4)nm,b=1.0671(2)nm,c=1.3662(3)nm,β=93.50(3)°,Z=4,R=0.0388.晶体的基本构建基元包含10个结晶H2O分子和由两个Cu(II)原子、一个采用双二齿螯合配位的2,3-二羟基丁二酸根、两个2,2’-联吡啶形成具有C2旋转轴的U形双核单元,相邻的两个方向相反的U形双核单元通过双羧基O桥联形成沿c轴延伸的一维链;链间籍C—H…O和O—H…O氢键扩展为三维结构.配合物中呈现了一种2,3-二羟基丁二酸与过渡金属配位的新方式.
The title coordination polymer {[Cu2 (dhbd) (bipy) 2] · 10H2O} n (H4dhbd = 2,3-dihydroxybutanedioic acid, bipy = 2,2’-bipyridine) was synthesized by hydrothermal method. The complex was monoclinic with space group C2 / c, a = 2.1965 (4) nm, b = 1.0671 (2), and its crystal structure was characterized by elemental analysis, infrared spectrum, thermal analysis and X-ray single crystal diffraction ), c = 1.3662 (3) nm, β = 93.50 (3) °, Z = 4, R = 0.0388. The basic building block of the crystal contains 10 crystalline H 2 O molecules and consists of two Cu (II) Using double bidentate chelate-coordinated 2,3-dihydroxysuccinate and two 2,2’-bipyridines to form a U-shaped binuclear unit with a C2 rotation axis, two adjacent U-shaped binuclear nuclei in opposite directions The unit forms a one-dimensional chain extending along the c-axis through the double carboxyl O bridging; the three-dimensional structure is extended by C-H ... O and O-H ... O hydrogen bonds between the chains. A 2,3- A new way of coordination between hydroxyl succinic acid and transition metal.