【摘要】 通过硝酸铽与新型酰胺型三足配体L(2,2’,2’’-胺三乙酰苯胺)之间的反应得到配合物[TbL2(H2O)]?(NO3)3(H2O)2(CH3OH),并用X射线单晶衍射测定了配合物的晶体结构.配合物为酰胺型三足配体稀土硝酸盐配合物中首例1∶2(M∶L)型配合物.配合物为单斜晶系,P21/c空间群,晶胞参数a=1.2870(7)nm,b=1.6590(8)nm,c=2.8723(12)nm,β=115.364(2)°,V=5.5415(5)nm3,Z=4,R=0.0399,wR=0.0922,Tb3+为9配位,呈变形的三帽三角棱柱配位构型.配合物分子单元通过分子间氢键作用将整个分子连接成三维网状超分子结构.室温下,在紫外光激发下配合物固体表现出Tb3+的特征荧光发射.更多还原

【Abstract】 Solid complex of terbium nitrate with a new amide type tripodal ligand, 2,2’,2’’-nitrilotris- (N-phenylacetamide) (L) has been prepared. The X-ray single-crystal diffraction analysis indicates that the complex [TbL2(H2O)]?(NO3)3(H2O)2(CH3OH) conformed to a 1∶2 metal-to-ligand stoichiometry, which is the first example of 1∶2 coordination structure of lanthanide nitrate complexes with such ligand. The crys- tal structure belongs to monoclinic system with space group P21/c, a=1.2870(7) nm, b=1.6590(8) nm, c= 2.8723(12) nm, β=115.364(2)°, V=5.5415(5) nm3, Z=4, R=0.0399, wR=0.0922. The coordination poly- hedron around Tb is a distorted tricapped trigonal prism, and furthermore the ML2 complex units are hydro- gen bonded to yield infinite 3D supramolecular network. At room temperature, the complex solid exhibited characteristic emission under UV light excitation.更多还原