亚磷酸钙的单晶培养与结构研究

Single Crystal Growth and Structural Investigation of Calcium Phosphite

采用水热反应法培养了一水合亚磷酸钙(CaHPO3·H2O,1)的单晶,并利用X-射线单晶衍射技术测定了化合物1的晶体结构。在化合物1中,Ca2+阳离子为七配位,并通过HPO-3阴离子的桥连作用形成二维层状配位聚合物,而后该二维层通过水分子与相邻层的亚磷酸分子间的氢键形成三维的网络结构。

Single crystals of calcium phosphite monohydrate （ CaHPO3 · H2 O, 1） were synthesized for the first time with hydrothermal method, and characterized by X -ray single crystal diffraction. In compound 1, the Ca2＋ cations were seven - coordinated, and self - assembled to form two - dimensional （2D） coordination polymers with the help of the bridging effect＇of HPO3 - cations. Then neighboring 2D coordination layers were extended to form three - dimensional （3D） network by hydrogen bonding between water molecules and HPO3 -cations.