A metal-organic coordination polymer [Cd(ipt)(Medpq)]n (H2ipt=isophthalic acid,Medpq=2-methyldipyrido[3,2-f:2′,3′-h]quinoxaline) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,UV-Vis spectrum,TG and single-crystal X-ray diffraction.Title compound crystallizes in the monoclinic system,space group C2/c,with a=2.0136(4) nm,b=1.6089(3) nm,c=1.6093(3) nm,β=125.12(3)°,V=4.3028(15) nm3,C23H18N4O6Cd,Mr=558.81,Dc=1.725 g.cm-3,Z=8,the final R=0.0531 and wR=O.1403.In the crystal structure,the cadmium is six-coordinated with four carboxylate oxygen atoms from three different carboxylate groups,and two nitrogen atoms from Medpq ligand,showing a slightly distorted octahedral geometry.Furthermore,it exhibits a one-dimensional zigzag structure with ipt-Cd-medpq as building units.CCDC:800998.%采用水热法合成了一种金属-有机配合物[Cd (ipt)(Medpq)]n(H2ipt =isophthalic acid,Medpq =2-methyldipyrido[3,2-f:2′,3′-h]quinoxaline),并对其进行了元素分析、红外光谱、紫外-可见光谱、热重表征、和X-射线单晶衍射测定.该配合物属于单斜晶系,C2/c空间群.在晶体结构中,Cd(Ⅱ)原子为六配位与来自于间苯二甲酸配体上的4个羧基氧原子,及Medpq配体上的2个氮原子配位,呈现畸变的八面体构型.整个晶体由ipt-Cd-medpq单元组成一维结构.
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