And as we know, the structure of HPO32- is similar to that of [PO4]3-, so [HPO3]2- may act as the structure unit to build the open framework.

• 由于[HPO3]2-同[PO4]3-结构上的相似性，[HPO3]2-也可以作为搭建空旷骨架化合物的结构单元。