具有新颖拓扑结构的吡啶基羧酸配体钇配合物的合成,晶体结构和拓扑学分析

摘要

利用水热合成制备了一个新的吡啶基多羧酸钇配合物YL(HL)·2H2O(1)(H2L=5-((吡啶基-3-亚甲基)氨基)间苯二甲酸).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1属于三斜晶系,P(1)空间群,晶胞参数为α=1.015 35(11) nm,b=1.083 33(12) nm,c=1.287 40(14) nm,α=70.9430(10)°,β=127.689(3)°,γ=84.0680(10)°,晶胞体积V=1.317 0(2)am3,Z=2,Dc=1.680 g·cm-3,F(000)=680,μ=2.284 cm-1,R=0.056 2,wR=0.1600.在化合物1中,每个Y的配位环境为八配位的反四棱柱配位构型.该配合物的二维结构是少见的(42.6)(42.67.8)层状拓扑.我们对配合物1的粉末衍射数据和热重分析也进行的讨论.%By using hydrothermal method,the reaction of 5-((pyridine-3-ylmethyl)amino)isophthalic acid (H2L) with yttrium nitrate led to the formation of a novel yttrium(Ⅲ) complex,namely,YL(HL)· 2H2O (1),with interesting two-dimensional (2D) topology.The title complex was characterized by elemental analysis and IR spectroscopy and its structure was determined by single crystal X-ray structural analysis.The result of structural analysis shows that the 1 crystallizes in triclinic,space group P1 with a=1.015 35(11) nm,b=1.083 33(12) nm,c=1.287 40(14) nm,α=70.9430(10)°,β=127.689(3)°,γ=84.0680(10)°,V=1.317 0(2) nm3,Z=2,Dc=1.680 g·cm-3,F(000)=680,μ＝2.284 cm-1,R=0.056 2,wR=0.160 0.The Y(Ⅲ)atoms was eight-coordinated with carboxylate O atoms in square-antiprismatic geometry.In complex 1,the 2D layer comprised ofμ2/μ3-ligands and 5-connected Y(Ⅲ) centers is rare example of 2-nodal net of (42·6)(42·67·8) topology.The XPRD and TGA analysis were also investigated.CCDC:864386.