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在水热条件下,利用吡啶酮、2,3-二甲基-2,3-二羟基丁二酸与氯化铜的原位反应得到了一种新型超分子配合物[Cu(Hdpmd)2].H4dsa(1)(H2dpmd=二-2-吡啶二甲醇,H4dsa=2,3-二甲基-2,3-二羟基丁二酸),通过X-射线单晶衍射技术测定了晶体结构,并用对其进行了表征。结果表明,配合物属三斜晶系,空间群Pi,a=0.7 794(2)nm,b=0.8 117(2)nm,c=1.1 317(1)nm,α=105.944(1)°,β=90.398(2)°,γ=110.619(2)°;Z=1;R=0.0 679。配合物的基本构建单元包含1个CuⅡ阳离子、2个Hdpm-阴离子和1个游离的H4dsa分子;中心CuⅡ原子的配位数为6,与2个Hdpm-阴离子的4个N原子和2个O原子配位,形成具有畸变八面体构型的单核配位单元。有趣的是紧邻的单核单元通过三种氢键环(R22(8)、R22(9)、R32(10))的连接拓展为三维超分子体系。
Under hydrothermal conditions, a novel supramolecular complex [Cu (Hdpmd) 2] was synthesized by in situ reaction of pyridone with 2,3-dimethyl-2,3-dihydroxybutanedioic acid and cupric chloride ] H4dsa (H2dpmd = di-2-pyridyldimethanol, H4dsa = 2,3-dimethyl-2,3-dihydroxybutanedioic acid), the crystal structure was determined by X-ray single crystal diffraction , And used to characterize it. The results show that the complex belongs to the triclinic system with space group Pi, a = 0.7 794 (2) nm, b = 0.8117 (2) nm, c = β = 90.398 (2) °, γ = 110.619 (2) °; Z = 1; R = 0.0679. The basic building block of the complex contains one CuⅡ cation, two Hdpm-anions and one free H4dsa molecule. The coordination number of the central CuⅡ atom is 6, with two N atoms of Hdpm-anion and two O The atoms coordinate to form mononuclear coordination units with a distorted octahedral configuration. Interestingly, the adjacent mononuclear units are extended to three-dimensional supramolecular systems by the connection of three hydrogen bond rings (R22 (8), R22 (9), R32 (10)).