A 3-DIMENSIONAL FRAMEWORK ALUMINO-PHOSPHATE (CH3NH3)-([AL3P3O13H])

The title compound, previously designated as JDF-2 [Gai-Boyes, Thomas, Wright, Jones, Natarajan, Chen & Xu (1992). J. Phys. Chem. 96, 8206-8 209], is an aluminium phosphate (AlPO) with a three-dimensional framew ork structure consisting of three types of PO4 tetrahedral unit linked to three crystallographically distinct Al atoms. One of the Al atoms is tetrahedrally coordinated (as AlO4) while the remaining two have di storted trigonal bipyramidal coordination and are linked through a com mon O atom to form O4Al-OH-AlO4 units. These units are relatively rare features in AlPO frameworks as the Al- and P-containing polyhedra are usually linked in a strictly alternating manner.