Synthesis and Crystal Structure from X-ray Powder Diffraction Data of Two Zirconium Diphosphonates Containing Piperazine Groups
作者:Marco Taddei、Ferdinando Costantino、Riccardo Vivani
DOI:10.1021/ic1014048
日期:2010.10.18
Compound 2, of formula ZrF2(O3PCH2)2(NH)2C4H8, has a pillared-layered structure (monoclinic, space group P21/c (No. 14), a = 8.7148(2) Å, b = 8.1731(1) Å, c = 9.0134(2) Å, β = 105.175(1)° Z = 2) in which inorganic layers, made of the connectivity of Zr octahedra and P tetrahedra, are covalently connected by piperazine groups, that act as pillars. The effect of the various synthesis parameters is discussed
通过Zr(IV)与哌嗪-N,N′-双(亚甲基膦酸酯)结构单元的反应,获得了两种新的氨基膦酸锆。从一开始就由常规衍射仪收集的X射线粉末衍射数据确定了它们的晶体结构。尽管在相似的条件下制备,但是它们的组成和晶体结构明显不同。式Zr 2 H 4 [(O 3 PCH 2)2 N 2 C 4 H 8 ] 3 ·9H 2 O的化合物1具有三维结构(三角形,空间基团R3̅̅(No. 148),a = 19.9400(9)Å,c = 9.5728(6)Å,Z = 3),由ZrO 6八面体和PO 3 C四面体的无限无机链组成,沿c轴方向延伸,由ab平面中的哌嗪基连接,并生成沿c轴延伸的通道。式ZrF 2(O 3 PCH 2)2(NH)2 C 4 H 8的化合物2具有层状结构(单斜,空间基团P 2 1 /c(第14号),a = 8.7148(2)Å,b = 8.1731(1)Å,c = 9.0134(2)Å,β=