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首页> 外文期刊>Crystallography reports >Fe-2.5[BP2O7(OH)(2)][PO3(OH)][PO3(O0.5OH0.5)] center dot H2O, a new phosphate-borophosphate with a microporous structure
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Fe-2.5[BP2O7(OH)(2)][PO3(OH)][PO3(O0.5OH0.5)] center dot H2O, a new phosphate-borophosphate with a microporous structure

机译:Fe-2.5 [BP2O7(OH)(2)] [PO3(OH)] [PO3(O0.5OH0.5)]中心点H2O,一种具有微孔结构的新型磷酸盐-硼磷酸盐

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摘要

A new phosphate-borophosphate Fe (2.5) (3+) [BP2O7(OH)(2)][PO3(OH)][PO3(O0.5OH0.5)] center dot H2O, space group P12(1), is obtained under hydrothermal conditions. Blocks {Fe3+(PO4)(6)}(15-) consisting of vertex-sharing (Fe1,Fe2)O-6 octahedra and six PO4 tetrahedra are distinguished in the structure of the new phase, which was determined without preliminary knowledge of the chemical formula. Such blocks are known for many phosphates (borophosphates), germanates, gallates, and silicates. Blocks form layers connected by BO4 tetrahedra into a framework with large pores reaching similar to 9.5 angstrom, which are occupied by water molecules. The out-of-layer octahedral position of the Fe3 atom is split and occupied statistically. The anion radical is characterized as a phosphate-borophosphate: it consists of two isolated PO4 tetrahedra and a borophosphate soro group [BP2O7(OH)(2)] first found in NaIn[BP2O8(OH)]. A layer of octahedra is characterized by higher local symmetry corresponding to the orthorhombic group Pm2(1) n.
机译:一种新的磷酸盐-硼磷酸盐Fe(2.5)(3+)[BP2O7(OH)(2)] [PO3(OH)] [PO3(O0.5OH0.5)]中心点H2O,空间组P12(1)/ n是在水热条件下获得的。由顶点共享(Fe1,Fe2)O-6八面体和六个PO4四面体组成的{Fe3 +(PO4)(6)}(15-)嵌段在新相的结构中得到了区分,这是在没有初步了解的情况下确定的化学式。对于许多磷酸盐(硼磷酸盐),锗酸盐,没食子酸盐和硅酸盐而言,此类嵌段是已知的。块形成由BO4四面体连接的层,形成一个骨架,该骨架的大孔接近9.5埃,被水分子占据。 Fe3原子的层外八面体位置被拆分并被统计占据。阴离子基团的特征是磷酸-硼磷酸根:它由两个分离的PO4四面体和一个硼酸根单独基团[BP2O7(OH)(2)]首次存在于NaIn [BP2O8(OH)]中。八面体层的特征在于与斜方基团Pm2(1)n对应的较高局部对称性。

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