C4H8N2H4·Zn(HPO3)2的水热合成和结构表征

在过去的十几年中 ,人们对含有机模板的、由 Zn O4 四面体和 PO4 四面体基本结构单元组成的磷酸锌盐进行了深入广泛的研究 ,发现其结构具有多样性 1] .近年来 ,人们又开始探索用亚磷酸氢根( HPO3)替代磷酸根 ( PO4 ) ,形成结构新颖的含有机模板的亚磷酸盐 .与磷酸根相比 ,亚磷酸氢根只能与 3个邻近的阳离子通过 P— O— M( M=Zn等 )键相连 ,结构同 PO3( OH) ]相似 .鉴于此 ,HPO3完全可以作为搭建空旷骨架化合物的结构基元 .与磷酸盐的研究相比 ,以有机胺为模板的过渡金属亚磷酸盐合成研究相对较少 .Harrison等 2 ,3] 报道了通过…

Hydrothermal Synthesis and Structure Characterization of C4H8N2H4·Zn(HPO3)2

A new zinc hydrogen phosphite C4H8N2H4·Zn(HPO3)2 was prepared by hydrothermal method in the presence of piperazine as a structure-directing agent and the crystal structure was determined by single-crystal X-ray diffraction analysis and further characterized by X-ray powder diffraction, IR, ICP, elemental analysis and TG analysis. This compound has one-dimensional anionic chains containing four-membered rings built from corner-sharing linked alternating ZnO4 tetrahedra and HPO3 pseudo pyramids. The zinc hydrogen phosphite chains are interacted with the templates of diprotonated piperazine by N—H…O hydrogen bond. Crystal data for C4H8N2H4·Zn(HPO3)2;monoclinic, space group C2/c. a=1.774 8(2) nm, b=0.724 28(9) nm, c=0.880 87(11) nm, β= 105.345(3)°, V=1.091 9(2) nm3, Z=4, Dc=1.907 Mg/m3, R1=0.022 9, wR2=0.058 8.