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2-dimensional sheet structures from linked metal fluoride tetrahedra

2-dimensional sheet structures from linked metal fluoride tetrahedra
2-dimensional sheet structures from linked metal fluoride tetrahedra
Two 2-dimensional lithiumfluoroberyllate compounds, that possess identical anionic sheet topologies, have been synthesised from aqueous solutions under hydrothermal and ambient pressure conditions. The structures of [Li2Be2F8][C2N2H10], 1, and [Li2Be2F8][CH3NH3](2)·[H2O](2), 2, consist of inorganic layers, constructed from linked [MF4] (M = Li, Be) tetrahedra with organic templating cations incorporated between the sheets. For the ethylenediammonium cation, 1, the structure is a C-centred monoclinic cell, (space group C2/c), whereas the methylamine hydrate, 2, crystallises in P2(1)/c, The interlayer regions possess corrugated topologies within which the organic moieties lie with the amine groups directed into the larger pockets. Hydrogen bonding exists between ions situated on the protonated amine groups on the templating species and electronegative fluoride ions.
layered aluminophosphate, zeolites
1477-9226
4402-4406
Gerrard, Lee A.
7ece498c-3d15-42f8-8c77-013242423752
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Gerrard, Lee A.
7ece498c-3d15-42f8-8c77-013242423752
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Gerrard, Lee A. and Weller, Mark T. (2002) 2-dimensional sheet structures from linked metal fluoride tetrahedra. Dalton Transactions, (23), 4402-4406. (doi:10.1039/b206469c).

Record type: Article

Abstract

Two 2-dimensional lithiumfluoroberyllate compounds, that possess identical anionic sheet topologies, have been synthesised from aqueous solutions under hydrothermal and ambient pressure conditions. The structures of [Li2Be2F8][C2N2H10], 1, and [Li2Be2F8][CH3NH3](2)·[H2O](2), 2, consist of inorganic layers, constructed from linked [MF4] (M = Li, Be) tetrahedra with organic templating cations incorporated between the sheets. For the ethylenediammonium cation, 1, the structure is a C-centred monoclinic cell, (space group C2/c), whereas the methylamine hydrate, 2, crystallises in P2(1)/c, The interlayer regions possess corrugated topologies within which the organic moieties lie with the amine groups directed into the larger pockets. Hydrogen bonding exists between ions situated on the protonated amine groups on the templating species and electronegative fluoride ions.

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More information

Published date: 2002
Keywords: layered aluminophosphate, zeolites

Identifiers

Local EPrints ID: 19745
URI: http://eprints.soton.ac.uk/id/eprint/19745
ISSN: 1477-9226
PURE UUID: c7cb7024-ee64-4799-9b57-7369e1f52357

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Date deposited: 20 Feb 2006
Last modified: 08 Jan 2022 06:46

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Contributors

Author: Lee A. Gerrard
Author: Mark T. Weller

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