Polyoxometalates (POM) are metal oxide clusters. There are many classical POM types, such as Lindqvist type, Weakley-type, Strandberg-type, Anderson type, Evans - Showell-type, Keggin type, Wells–Dawson type, etc. Recently, Preyssler-type (PT) POM has caught serious attention due to (a) high thermal stability, (b) having flexible binding mode at different condition, i.e. {NaPWO} can coordinate internally and externally, (c) presence of 30 surface oxygen as external binding sites, (d) stability in long pH range (1–10), (e) Preyssler POM can be a good acid as well as redox catalyst, (f) unique structural symmetry of the ligand field, low computational cost (a combination of molecular symmetry and medium size). Moreover, PT POMs are also smallest POM with internal cavity. This review highlights the unique structure and property of PT POM based materials.

中文翻译：

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Preyssler 型多金属氧酸盐，最小的带内腔的 POM：合成、结构和功能

多金属氧酸盐 (POM) 是金属氧化物簇。经典的POM类型有很多，如Lindqvist型、Weakley型、Strandberg型、Anderson型、Evans-Showell型、Keggin型、Wells–Dawson型等。最近，Preyssler型（PT）POM已流行起来。由于(a)高热稳定性，(b)在不同条件下具有灵活的结合模式，即{NaPWO}可以内部和外部协调，(c)存在30个表面氧作为外部结合位点，(d)在pH 范围长 (1–10)，(e) Preyssler POM 可以是一种良好的酸和氧化还原催化剂，(f) 配体场独特的结构对称性，计算成本低（分子对称性和中等尺寸的结合）。此外，PT POM 也是最小的带内腔的 POM。本综述重点介绍了 PT POM 基材料的独特结构和性能。