中文摘要：

两个新型的配合物{[M（ppa）2]·4H2O}n[M=Ni（1）,Co（2）;ppa-=吡哌酸]已被合成,采用元素分析、红外光谱、TGA和单晶X射线衍射分析对其进行了表征。单晶X射线衍射分析显示这两个配合物同构,都是由二维正弦波动层状互相作用形成的三维结构。另外固体荧光实验表明,虽然（1）和（2）是同构的,但是仅仅（2）在615 nm处有较强的荧光,而1却没有荧光性质。

英文摘要：

Two new supramolecular compounds {[M（ppa）2]· 4H2O}n[M=Ni（1）,Co（2）;ppa-=Pipemidic acid]have been synthesized hydrothermally and characterized by elemental analyses,IR spectra,TGA and single-crystal X-ray diffraction analyses.The isomorphic compounds（1） and（2） both display the three-dimensional（3D）（4^4·6^2）-connected supramolecular host networks through the interactions between two novel 2D sinusoidal ruffling sheets.In addition,the fluorescence emission spectra show that only compound（2） displays the intensive florescence at 615 nm,while（1） does not reveal any fluorescent property although they are isostructural.