Abstract
Four beryllium hydrogen phosphates, Be2(Hea)(PO4)(HPO4) (1), Him·Be3(OH)(HPO4)3 (2a), Hpy·Be3(OH)(HPO4)3 (2b), and Hma·Be1.5(HPO4)2·0.5H2O (3) in which ea = ethanolamine, im = imidazole, py = pyridine, and ma = methylamine, were synthesized under solvothermal conditions. All compounds have open-framework structures with (3,4)-connected networks. Compound 1 features a neutral inorganic–organic hybrid framework with an interrupted zeolitic GIS topology. The dual role of the amine molecules as charge-balancing agents and coordinating agents to the beryllium atoms is noteworthy. Compounds 2a and 2b are isostructural, and they have an AFI-related framework with elliptical 12-ring channels. Compound 3 has a 3D structure with 4.82 layers pillared by corner-sharing four-ring chains. It represents the first example of an open-framework beryllium hydrogen phosphate with 16-ring channels.
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