使用多氮化合物碳酸胍作为结构导向剂,通过水热方法首次合成了亚磷酸铝[Al2(HPO3)3(H2O)3]·H2O的单晶(记作Al-7),并通过粉末XRD、红外、TG-DTA、单晶X射线衍射对其结构进行了表征。Al-7属单斜晶系,P21空间群,结构组成为[Al2(HPO3)3(H2O)3]·H2O,晶胞参数a=0.7609(4)nm,b=0.9900(5)nm,c=0.8073(4)nm,β=111.934(7)°,V=0.5641(5)nm^2,Z=2,Dv=2.154g/cm^3。严格交替的AlO6八面体和HPO3四面体构成了Al-7的三维开放骨架。Al-7具有三维交叉孔道体系,分别是沿α轴8元环孔道、沿c轴10元环孔道和沿[506]方向的8元环孔道。
Single crystals of aluminophosphite, [Al2(HPO3)3(H2O)3]·H2O, denoted as Al-7, were synthesized hydrothermally by using guanidinium carbonate (CN3 H6)2CO3 as structure-directing agent. Al-7 was characterized by XRD, FT-IR, TG-DTA, and the structure was solved by single-crystal X-ray diffraction. Al-7 crystallizes in monoclinic, P21(No. 4) space group. Crystal data: [Al2(HPO3)3(H2O)3]·H2O, a=0.7609(4)nm, b=0.9900 (5)nm, c=0.8073(4)nm, β=111.934(7)°, V=0.5641(5)nm^3, Z=2, De=2. 154 g/cm^3. Strict alternation of AlO6 octahedrons and HPO3 pseudo pyramids forms the open-framework. Al-7 contains aD intersecting channels, 8-membered ring channels along a axis, 10-membered ring channels along c axis and the second 8-membered ring channels along the [506] direction.