Preparation and Structure of A Novel Ethanolamine-occluding Aluminoarsenate

Abstract

Abstract: An aluminoarsenate, Al₂As₂O₃·EAN, denoted as AlAsO₄-1 was synthesized from EAN(EAN= ethanolamine), pyroarsenic acid and aluminium-iso-propylate systems. The crystal structure of AlAsO₄-1 was determined by single crystal X-ray diffraction method. The compound crystallizes in orthorhombic space group Pcab with the unit cell constants:0=8.781(3), 6=10.261(3), c=20. 433(11) A .V=1840.9A³, 2=8. The final Rand Rw factors are 0.0401 and 0.0344, respectively. The framework of AlAsO₄-1 contains two types of Al atoms. It is interesting that in the asymmetric unit one of two Al atoms is strictly 4-coordinated and the other is 6-coordinated. The three-dimensional framework is built of two-dimensional nets which consist of 4-membered rings and 8-membered rings. The biggest open channel in the framework runs along [100], in which EANtemplate is located. Arsenic atoms can function as a component element for construction of three-dimensional net with topological novelty.

Key words: Aluminoarsenate, Preparation, Structure, Template, Channel

Li Li, Vang Guangdi, Chen Jiesheng, Xu Ruren. Preparation and Structure of A Novel Ethanolamine-occluding Aluminoarsenate[J]. Chemical Research in Chinese Universities, 1990, 6(2): 91-94.

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Preparation and Structure of A Novel Ethanolamine-occluding Aluminoarsenate

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