Synthesis, crystal structure and spectroscopic characterization of a new cadmium phosphate, Na2Cd5(PO4)4
作者:Teycir Ben Hamed、Amal Boukhris、Benoit Glorieux、Mongi Ben Amara
DOI:10.1016/j.molstruc.2019.126963
日期:2020.1
Z = 2. The structure consists of (Na3/4,Cd1/4)O7, (Cd3/4,Na1/4)O6 and CdOx (x = 6, 7), polyhedra and PO4 tetrahedra linked through common corners or edges giving rise to a novel type of complex three-dimensional framework. This structure could be described in terms of [(Na3/4,Cd1/4)2(Cd3/4,Na1/4)2Cd3O16]∞ layers stacked parallel to the (2 0–3) plane and interconnected both directly and via PO4 tetrahedra
摘要 分别采用助熔剂法和Pechini 法合成了一种新型的磷酸镉化合物Na2Cd5(PO4)4,呈单晶状和粉末状。然后通过单晶 X 射线衍射、振动光谱和光致发光测量对其进行表征。该化合物在单斜晶系中结晶,空间群为 P21/a,晶格参数 a = 8.276(1) A, b = 9.301(3) A, c = 9.455(2) A, β = 111.82 (1)° 和 Z = 2. 该结构由 (Na3/4,Cd1/4)O7、(Cd3/4,Na1/4)O6 和 CdOx (x = 6, 7)、多面体和 PO4 四面体通过共同的角或边连接而成一种新型的复杂三维框架。这种结构可以用 [(Na3/4,Cd1/4)2(Cd3/4, Na1/4)2Cd3O16]∞ 层平行于 (2 0–3) 平面堆叠,并通过共享公共角和边直接和通过 PO4 四面体互连。根据结构结果对振动光谱和镉光致发光进行了分析。