STRUCTURE DETERMINATION OF (N2C2H10)4(NH4)ALP4O16 - A NEW ALUMINOPHOSPHATE TEMPLATED BY ETHYLENEDIAMINE

This paper deals with the synthesis and the X-ray determination of the structure of a new aluminophosphate with the formula (N2C2H10)4(NH4)AlP4O16. This acentric phase crystallizes in the tetragonal space group I-4 (no. 82) with parameters a = 9.1545(5)Å, c = 17.1810(8)Å, V = 1439.9(2)Å3, and Z = 2. The network of (N2C2H10)4(NH4)AlP4O16 consists of pentameric [AlP4O16 clusters with a central AlO4 tetrahedron sharing its four corners with four PO4 tetrahedra. These isolated units are linked by strong hydrogen bonds between the oxygen atoms of the PO4 groups and the hydrogen of the ammonium cations and the diprotonated ethylenediamine. © 1992 Academic Press, Inc.