M[MnGa_2(PO_4)_3(H_2O)](M=K,K_(0.5)Rb_(0.5),Cs)三种碱金属锰(Ⅱ)代水合磷镓酸盐的合成及特征(英文)  

Syntheses and Characterizations of Three Alkali Manganese(Ⅱ)-Substituted Gallium phosphate Hydrate:M[MnGa_2(PO_4)_3(H_2O)_2](M=K,K_(0.5)Rb_(0.5),Cs)

作　　者：李平[1,2] 曹宝亮 谭福贵[2] 

机构地区：[1]陕西师范大学材料科学与工程学院,陕西西安710062 [2]集宁师范学院化学系,内蒙古乌兰察布012000

出　　处：《集宁师范学院学报》2013年第1期1-13,共13页Journal of Jining Normal University

基　　金：Project supported by the Scientific Research Project of Higher Education of Inner Mongolia((No.NJZY13284)and(No.NJZC13283));the project(Studies of Synthesis and Thermochemical Properties of Boron-containing Microporous Compounds of Organic Base as A Template)is supported by Inner Mengolia Science&Technology Plan;the project(No.201340)is supported by Inner Mengolia Social Science Association

摘　　要：三种新型碱金属锰(Ⅱ)取代磷镓酸盐水合物:K[MnGa2(PO4)3(H2O)2](Ⅰ),K0.5Rb0.5[MnGa2(PO4)3(H2O)2](Ⅱ)和Cs[MnGa2(PO4)3(H2O)2](Ⅲ),在水热条件下合成,且通过傅里叶红外光谱,X-射线,以及热分析对其特征进行了表征。三种物质的晶体结构有X-射线单晶衍射仪确定。聚阴离子[MnGa2(PO4)3(H2O)2]-结构由GaO5三角双锥,MnO4(H2O)2八面体及PO4四面体互相连接构筑成三维孔道结构,阳离子K+,(K0.5Rb0.5)+和Cs+镶嵌在其中,由于这些离子相互连接,形成三维孔道网状结构,其中与锰原子配位的水分子和K+,(K0.5Rb0.5)+和Cs+平衡骨架电荷。孔道之间的距离随阳离子K+,(K0.5Rb0.5)+和Cs+的大小而发生变化。阳离子K+,(K0.5Rb0.5)+和Cs+与周围氧原子高扭曲配位,K+与来自周围的六个氧原子配位,而(K0.5Rb0.5)+和Cs+与来自周围的十二个氧原子配位。所有配位水分子与Ga-O-P桥上氧原子的产生的距离都在氢键范围之内。Three novel alkali manganese （Ⅱ）-substituted gallium phosphate hydrates compounds： K[MnG2a（PO4）3（H2O2）]（I）,K0.5Rb0.5[MnG2（PO4）3（H2O2）（Ⅱ） and Cs[MnGa2（PO4）3（PO4）3（H2O2）]（Ⅲ）have been synthesizedunder hydrothermal conditions, and characterized by FT-IR spectroscopy, X-ray diffraction, andDTA-TG Their crystal structures were determined from single crystal X-ray diffraction. The polyanion [MnGa2（PO4）3（H2O2）]-structure consists of GaO5 tdgonal bipyramids, MnO4（H2O）2 octahedra and PO4 tetrahedm linked to form a three-dimensional framework containing channels in which the K＋,（K0.5Rb0.5）＋ and Cs＋ cations reside. These intersect, forming a three-dimensional pore network in which the water molecules coordinated to the Mn atoms and the K＋（K0.5Rb0.5）＋ and Cs＋ cations required to charge balance the framework reside. The cross channel distances are difference with the K＋,（K0.5Rb0.5）＋＋ and Cs＋ cations. The （K0.5Rb0.5）＋ and Cs＋ cations lie in a highly distorted environment surrounded by six Oatorm for K＋, twelve O atoms for （K0.5Rb0.5）＋ andtwelve O atoms for Cs＋. All the co ordinaled water molecules are within hydrogen-bonding distance to O atoms of bridging Ga-O-P groups.

关 键 词：镓酸盐 微孔晶体 晶体结构 

分 类 号：O76[理学—晶体学]