Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine

Abstract

A single-crystal X-ray diffraction analysis of an open-framework aluminophosphate ULM-3 Al prepared by 3-methylaminopropylamine (MAPA) as structure-directing agent revealed an orthorhombic Pcab symmetry (a=9.9949(4)angstrom, b=15.8229(7)angstrom, c=18.1963(5)angstrom, R=0.0648, Z=8, unit cell formula (Al24P24O96F16 center dot C32H112N16]). which differs from the Pbc2(1) symmetry of the structural analogue prepared in the presence of 1,4-diaminobutane. The Al-27, P-31, F-19, C-13 and H-1 NMR investigations, which were performed to study in detail MAPA arrangement inside the framework as well as the interactions of MAPA with the aluminophosphate host, confirmed the crystal symmetry and the proposed hydrogen bonding scheme between the template and the framework.