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NH4[BAsO4F] a new layer fluoro-boroarsenate with a silicate related topology

NH4[BAsO4F] a new layer fluoro-boroarsenate with a silicate related topology
NH4[BAsO4F] a new layer fluoro-boroarsenate with a silicate related topology
The fluoro-boroarsenate NH4[BAsO4F] has been obtained by the melt reaction of NH4H2AsO4, B(OH)3 and LiBF4. The dry reaction mixture, in a 3:3:2 ratio, was treated at 240 °C for 14 days. After cooling to room temperature and washing with hot water, the product was isolated as colourless crystals and powder. The crystal structure was determined by single-crystal X-ray diffraction. The structure consists of [BAsO4F]- layers, separated by ammonium ions, having a unique orientation pattern of the tetrahedra forming the constituent six-membered rings. The topology of the fluoro-boroarsenate layer is related to those of the silicate -Na2Si2O5 and the borophosphate Mg(H2O)2[B2P2O8(OH)2]·H2O. NH4[BAsO4F] was further characterised by powder X-ray diffraction, IR spectroscopy and EDX analyses
0044-2313
Lieb, Alexandra
bf550f75-1843-4433-8efa-5de8ef0a8888
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Lieb, Alexandra
bf550f75-1843-4433-8efa-5de8ef0a8888
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Lieb, Alexandra and Weller, Mark T. (2009) NH4[BAsO4F] a new layer fluoro-boroarsenate with a silicate related topology. Zeitschrift für anorganische und allgemeine Chemie, 635 (12). (doi:10.1002/zaac.200900183).

Record type: Article

Abstract

The fluoro-boroarsenate NH4[BAsO4F] has been obtained by the melt reaction of NH4H2AsO4, B(OH)3 and LiBF4. The dry reaction mixture, in a 3:3:2 ratio, was treated at 240 °C for 14 days. After cooling to room temperature and washing with hot water, the product was isolated as colourless crystals and powder. The crystal structure was determined by single-crystal X-ray diffraction. The structure consists of [BAsO4F]- layers, separated by ammonium ions, having a unique orientation pattern of the tetrahedra forming the constituent six-membered rings. The topology of the fluoro-boroarsenate layer is related to those of the silicate -Na2Si2O5 and the borophosphate Mg(H2O)2[B2P2O8(OH)2]·H2O. NH4[BAsO4F] was further characterised by powder X-ray diffraction, IR spectroscopy and EDX analyses

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Published date: October 2009
Organisations: Chemistry

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Local EPrints ID: 158739
URI: http://eprints.soton.ac.uk/id/eprint/158739
ISSN: 0044-2313
PURE UUID: 3ffaa4df-c854-4f85-ba6e-71376584bb45

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Date deposited: 23 Jun 2010 11:31
Last modified: 19 Jul 2019 23:18

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