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以4-硝基邻苯二甲酸(H2L)为有机配体,咪唑(Him)为第二配体合成了结构新颖的一维链状Cu聚合物:1∞{[Cu(Him)(H2O)L]·0.5H2O}。采用X-射线单晶衍射测定了它的结构,显示标题聚合物属于单斜晶系,空间群P2/n,晶胞参数为a=11.565(2),b=7.321(2),c=16.194(3),β=103.70(3)°,V=1 332.0(5)3,Z=2,C11H10CuN3O7.5,Mr=735.52,Dc=1.834 g/cm3,F(000)=744。3 039个独立衍射点中2 638个满足F2o≥2σ(F2o),最终残差因子R1和wR2分别为0.030 1和0.082 9。结构单元中,该链状Cu聚合物首先通过O—H…O氢键形成一维双链和二维层,层与层之间进一步相互穿插,通过芳环堆积作用形成三维超分子网络结构。
A new one-dimensional chain-like Cu polymer with 4-nitrophthalic acid (H2L) as the organic ligand and imidazole as the second ligand was synthesized: 1 ∞ {[Cu (Him) L] · 0.5H2O}. Its structure was determined by X-ray single crystal diffraction and the title polymer belongs to the monoclinic space group P2 / n. The unit cell parameters are a = 11.565 (2) and b = 7.321 (2) , c = 16.194 (3) β, β = 103.70 (3) °, V = 1 332.0 (5) 3, Z = 2, C11H10CuN3O7.5, Mr = 735.52, Dc = 1.834 g / cm3, 2 638 of 3 039 independent diffraction points satisfy F2o ≥ 2σ (F2o), and the final residual factors R1 and wR2 are 0.030 1 and 0.082 9, respectively. In the structural unit, the chain-like Cu polymer first forms one-dimensional double-stranded and two-dimensional layers through O-H ... O hydrogen bonds, further interpenetrating between the layers, and forms a three-dimensional supramolecular network structure by aromatic ring stacking.