Preparation, characterisation, and crystal and molecular structure of a novel tetrameric aluminium phosphate complex: [{Al(PO4)(HCl)(C2H5OH)4}4]

Cubane shaped clusters, precursors for aluminophosphate frameworks: a solid state multinuclear NMR study, in time and frequency domains

“…We report the crystallographic structures of compounds 1 and 2 obtained at 233 K and 163 K, respectively. X-Ray diffraction data of compound 1 were reported by Cassidy et al 13 in 1975 at room temperature. The exact location of the carbon atoms was not reported in the original work.…”

“…To our knowledge, the crystallographic structure of compound 2 (Br derivative) was never published in the literature (although such a compound was evoked by Cassidy et al). 13 Crystallographic data concerning compounds 1 and 2 are given in Table 1. Each structure consists of cubane shaped molecules, possessing 4 ¯ symmetry (see Fig.…”

“…First, we present a short description of the crystallographic structures of 1 and 2. The structure of 1 was partially resolved in 1975 by Cassidy et al 13 and the structure of 2 has never been published in the literature. These compounds exhibit a double four-ring skeleton, similar to the D4R or 4-4 SBU occurring in zeolites.…”

“…After a brief presentation of the 31 P solution NMR study, compounds 1 and 2 were systematically studied by solid state multinuclear NMR. 31 P and 13 C CP MAS dynamics were analysed in terms of coherent and incoherent transfer of magnetisation. Fast 31 P CP MAS experiment led to the observation of dipolar oscillations and to the direct estimation of P-H distances.…”

Octameric and Decameric Aluminophosphates

“…In particular, use of structurally diverse organic templates has yielded a wide variety of lower dimensional (0D, 1D, and 2D) and framework (3D) metal phosphates 2. 3 Parallel to the developments in the area of aluminophosphate materials, there has also been considerable interest in synthesizing discrete and soluble model compounds (and/or structural building units (SBUs) of zeolites) for a better understanding of the mechanism of the formation of zeolites 4–6. The use of H 3 PO 4 for this purpose has limited scope owing to its poor solubility in solvents other than water.…”