吡哌酸配体构筑的镍(II)、钴(II)配合物的合成、结构与荧光性质的研究

两个新型的配合物{M(ppa)2]·4H2O}n M= Ni (1), Co (2); Hppa =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。

Synthesis, structures and fluorescent properties of Nickel(II) and Cobalt(II) coordination compounds containing pipemidic ligand

Two new supramolecular compounds {M(ppa)2].4H2O}n M= Ni (1), Co (2); Hppa = 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) (44.62)-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.