含多配位点的功能配合物的合成、结构与性质研究-应用化学专业论文.docxVIP

郑卅|人学硕I’学位论文位模式：以此形成lD链状结构。 郑卅|人学硕I’学位论文 位模式：以此形成lD链状结构。 最后由2，6．吡啶二羧酸与稀土离子和不同阳离子组成一系列离子型超分子 配合物，8． K3[Eu(dipic)3]·3H20。9． 12+I+[Eu(dipic)3]·7H20．10． 【H2N(CH2)2NH2]2[Eu(dipic)3】N03·5H20，11．x1+x2”[Eu(dipic)3]·6H20。这四个配 合物的中心离子配位情况相同，Eu(1lI)离子与来自三个配体dipic的六个氧原子 和三个氮原子配位，形成九配位的较规则的三帽三方棱柱构型，其中三个配位氮 原子为帽原予。其荧光光谱表明：所有配合物的发射光谱中jD旷+砚跃迁均占绝 对优势，说明中心离子不占据对称中心，这与晶体结构测定相一致。 关键词：配合物， 晶体结构， 荧光 lI 郑州人学顾I‘学位论文Abstract 郑州人学顾I‘学位论文 Abstract Three ncw series of complexes with N,N-bis(pyridyi)-pyridine-2，6一dicarbox- amide，4．(4，5-diazafluoren-9-ylidieneamino)benzoate，and pyridine-2，6-dicarboxylate chelating ligands have been synthesized． Firstl％two new ligands N,N-bis(pyridin-3-y1)-pyridine．2，6-dicarboxamide(XIL)and N,Nbis(pyridin-4．y1) -pyridine-2，6-dicarboxamide(XL)Were synthesized；This kind of ligands contains two amide moieties and tl豫pyridine groups．and is expected to adopt diverse coordination modes according to the different geometric requirements of the metal ions． Four novd transition metal complexes I．Zn(XIL)C12’DMF 2．【Zn(XILh(SCNh‘2H20]n，3．[Cd(XIL)2(SCN)2‘2H20]n 4．【Co(XL)2(SCN)2’3DMF‘H20】n were yielded with XIL and XL as chelating ligands．Vchen the Zn(II)、XIL and different assistant ions react in different solvent， complexes 1 and 2 with different structure were resulted．The Dinuclear Zn(II) Complex 1 belongs to triclinic with space group of P-I．The centre Zn(111 ion is four-coordinated and formed a distorted tetrahedral coordination geometry；Complex 2 shows one dimensional chain structure,the center Zn(11)is six coordinated with a coordination geometry of distorted octahedron．The complexes 2 and 3 are obtained through the reaction of the ligand XIL and Zn(II)，Cd(11)under the same condition．， and as a result，The complexes 1 and 2 are iso—structure and all belong to triclinic with p-1 space group．Complexes 2 and 3 adopted the salne coordination modes and extended into 1D chain structures，in the equatorial plane，the center ion is eoordinated with four nitrogen atoms from fo