[C9H20N][Al2(HPO4)2(PO4)]: An Aluminium Phosphate with a New Layer Topology

• Published in: Journal of solid state chemistry 1999-07, Vol.145 (2), p.731-738
• Main Authors: Chippindale, Ann M., Walton, Richard I.
• Format: Article
• Language: English
• Subjects: Chemistry; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; General and physical chemistry; Inorganic compounds; Ion-exchange; Other ion exchangers: preparations and properties; Physics; Salts; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Surface and interface chemistry; Surface physical chemistry
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1006/jssc.1999.8297

A new two-dimensional aluminophosphate, [C9H20N][Al2(HPO4)2(PO4)] has been synthesized under solvothermal conditions at 453 K in the presence of 2,2,6,6,- tetramethylpiperidine and the structure determined using room-temperature single-crystal X-ray diffraction data (Mr=483.16, triclinic, space group P-1, a=8.541(3), b=9.298(1), c=12.660(5) Å, α=73.26(2), β=89.58(4), and γ=87.70(2)° V=962.06 Å3, Z=2, R=3.88%, and Rw=4.47% for 2049 observed data (I>3(σ(I))). The structure has a new framework topology and contains AlO4 and PO4 tetrahedra linked to generate layers containing 4- and 8-membered rings of alternating aluminium- and phosphorus-based polyhedra. The organic cations reside between the layers and are hydrogen bonded to the inorganic framework. The layer topology is closely related to that observed previously in the pyridine-containing AlPO, [C5H6N][Al2(HPO4)2(PO4)].