Synthesis and characterization of a new three-dimensional aluminophosphate[Al11P12O48][C4H12N2][C4H11N2] with an Al/P ratio of 11 : 12

Employing piperazine as a template, a new three-dimensional aluminophosphat e [Al11P12O48][C4H12N2][C4H11N2] (denoted AlPO-CJ11) has been prepared hydr othermally. The as-synthesized product has been characterized by X-ray powd er diffraction, inductively coupled plasma, thermogravimetric and different ial thermal analyses. Single crystal X-ray diffraction analysis shows that AlPO-CJ11 crystallizes in the trigonal space group R(3) over barc (no. 167) with a = 14.045(2) Angstrom, c = 42.091(6) Angstrom, V = 7191.0(16) Angstr om (3), and Z = 6. The framework structure of AlPO-CJ11 is constructed from two new types of chiral cage and has a new stoichiometry with an Al/P rati o of 11 : 12. The possible locations of the templates in the cages have bee n investigated by molecular modeling.