Structure of an Unusual Aluminium Phosphate ([Al5P6O24H]2- 2[N(C2H5)3H]+ · 2H2O) JDF-20 with Large Elliptical Apertures

✍ Scribed by Richard H. Jones; John Meurig Thomas; Jiesheng Chen; Ruren Xu; Qisheng Huo; Shougui Li; Zhanguo Ma; Ann M. Chippindale

• Book ID: 102601866
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 197 KB
• Volume: 102
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1993.1023

✦ Synopsis

The structure and thermal properties of a new large-pore three-dimensional aluminophosphate are reported. The (\mathrm{P} / \mathrm{Al}) ratio of this compound is 6:5, the structure consists of Al-centered and (\mathrm{P}) - centered tetrahedra in which all the Al vertices are shared, but not all the (P) vertices, giving rise to an interrupted structure type. The framework contains 20 -membered rings with elliptical apertures having a free diameter of 6.2 by (14.5 \AA) intersected by smaller 10 - and 8 -membered rings. In these channels are water molecules and triethylammonium cations which are hydrogen bonded to the framework. The space group of the compound is (C 2 / c), with (a=32.035(12), b=14.308(3), c=8.852(2) \AA, \beta=104.65(2)^{\circ}), and (V=3925.6 \AA^{3}). The crystal structure has been refined to yield residuals of (R=0.126) and (R_{w}=) 0.113. 1993 Academic Press, Inc.