在酸性介质、含水溶剂中合成了四元混配化合物［Ｌｎ（ＢＡ）２（ＮＯ３）（ｐｈｅｎ）］２（ＢＡ＝ 苯甲酸根； Ｌｎ＝ Ｌａ， Ｃｅ， Ｐｒ， Ｎｄ， Ｓｍ ， Ｅｕ， Ｄｙ， Ｇｄ， Ｔｂ， Ｅｒ）， 用元素分析、ＩＲ、ＤＴＡ－ＴＧ等方法对配合物进行了表征． 研究了配合物的顺磁性能和荧光性能． 镨配合物的单晶衍射结果表明， 配合物属三斜晶系， 双核， Ｐｒ３＋ 的配位数为９， ４ 个ＢＡ 呈二种配位方式， 丰富了四元配合物的结构表现形式 A series of quaternary compounds [Ln (BA) 2 (NO3) (phen)] 2 (BA = benzoate; Ln = La, Ce, Pr, Nd, Sm, Eu, Dy) were synthesized in acidic medium and aqueous solvent , Gd, Tb, Er). The complexes were characterized by elemental analysis, IR, DTA-TG and so on. The paramagnetic properties and fluorescence properties of the complexes were studied. The single crystal diffraction results of praseodymium complexes show that the complexes are triclinic and binuclear, and the coordination number of Pr3 + is 9 and 4 BA are two kinds of coordination modes, which enriches the structure of quaternary complex