New open-framework beryllium phosphates with hcb, sql, and bnn topologies

•New beryllium phosphates were prepared under solvothermal conditions.•Open-framework structures are constructed from different cluster-like building blocks.•Beryllium phosphates display hcb, sql, and bnn topologies.

Three new beryllium phosphates, namely, H3aep·Be2(PO4)2(H2PO4)·H2O (1), H2tmdp·Be3(HPO4)3(PO4CH3)·2.25H2O (2), and H2dmpda·Be3(PO4)(HPO4)2(H2PO4) (3), were prepared under solvothermal conditions. These compounds display different open-framework structures with hcb (for 1), sql (for 2), and bnn (for 3) topologies, respectively. The formation of phosphate ester from in situ esterification reaction of phosphoric acid and methanol is noteworthy.

Graphical abstractThree open-framework beryllium phosphates were synthesized under solvothermal conditions. These compounds display hcb, sql, and bnn topologies. The coexistence of phosphate and methylphosphate in the same crystalline structure is noteworthy.Figure optionsDownload full-size imageDownload as PowerPoint slide