Synthesis, characterization and structure determination of two isotypes of a layered aluminophosphate with a new 2D network topology

A. Tuel (1) , C. Lorentz (1)

1 IRC - Institut de recherches sur la catalyse

Two isotypes of a new layered aluminophosphate, further denoted MDAP-3 and MDAE-1, were synthesized under hydrothermal conditions using N-methyl-1,3-propanediamine and N-methyl-ethylenediamine, resp. MDAP-3, with the empirical formula [Al2(HPO4)(PO4)2](C4N2H14)(H2O), crystallizes in the orthorhombic space group Pna2(1) with a 9.602(16), b 9.26(2), c 16.03(3) .ANG., Z = 4, R1 = 0.0498 and wR2 = 0.1217. The 2nd solid, MDAE-1, with the empirical formula [Al2(HPO4)(PO4)2](C3N2H12)(H2O), crystallizes in the same space group with a 9.4250(19), b 9.3170(19), c 15.907(3) .ANG., Z = 4, R1 = 0.0407 and wR2 = 0.0954. The two compds. possess the same layer topol. Inorg. layers contain PO3 = O, PO3OH, AlO4 and AlO6 polyhedra, linked together to generate a new 4 ≥ 8 net. MDAP-3 and MDAE-1 represent the 1st examples of two-dimensional layered aluminophosphates with the Al2P3O12 stoichiometry, and contg. AlO6 octahedra.

Domaines: Catalyse

A. Tuel, C. Lorentz. Synthesis, characterization and structure determination of two isotypes of a layered aluminophosphate with a new 2D network topology. Journal of Solid State Chemistry, 2005, 178 (7), pp.2322-2331. ⟨hal-00012761⟩