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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Synthons and design in metal phosphates and oxalates with open architectures [Review]
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Synthons and design in metal phosphates and oxalates with open architectures [Review]

机译：具有开放式体系结构的金属磷酸盐和草酸盐的合成子和设计[综述]

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摘要

We briefly describe the structures of open-framework metal phosphates with different dimensionalities, such as the one-dimensional linear-chain and ladder structures, two-dimensional layer structures and three-dimensional structures with channels. We demonstrate the role of the zero-dimensional four-membered ring monomer and of the one-dimensional ladder structure as the starting building units or synthons involved in the formation of the complex architectures. Thus, we show how the one-dimensional ladder structure transforms to two- and three-dimensional structures under mild conditions. The two-dimensional layer structures also transform to three-dimensional structures, while the zero-dimensional monomer transforms to layered and three-dimensional structures under ordinary reaction conditions. These transformations provide an insight into the possible pathways involved in the building up of the complex structures of metal phosphates. The isolation of amine phosphates during the hydrothermal synthesis of metal phosphates and also the facile reactions between amine phosphates and metal ions to yield a variety of open-framework materials have thrown light on the mechanism of formation and design of these structures. The existence of a hierarchy of open-framework metal oxalates and their ready formation by employing amine oxalates as intermediates provides additional support to the observations made earlier with regard to the phosphates. [References: 22]
机译：我们简要描述了具有不同尺寸的开放式骨架金属磷酸盐的结构，例如一维线性链和梯形结构，二维层结构和带有通道的三维结构。我们展示了零维四元环单体和一维梯形结构作为参与复杂体系结构形成的起始建筑单元或合成子的作用。因此，我们展示了如何在温和条件下将一维梯形结构转换为二维和三维结构。在常规反应条件下，二维层结构也转换为三维结构，而零维单体则转换为层状和三维结构。这些转变提供了对可能形成金属磷酸盐复杂结构的途径的见解。在金属磷酸盐的水热合成过程中，胺磷酸盐的分离以及胺磷酸盐与金属离子之间的易反应以生成各种开放框架的材料为这些结构的形成和设计提供了思路。开架式金属草酸盐的层级存在及其通过使用草酸胺作为中间体而易于形成的现象，为先前有关磷酸盐的观察提供了额外的支持。 [参考：22]

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