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Title: 3D-2D-0D Stepwise deconstruction of a water framework templated by a nanoporous organic-inorganic hybrid host
Author: Rocha, Joao
Shi, Fa-Nian
Paz, Filipe A. Almeida
Mafra, Luis
Sardo, Mariana
Cunha-Silva, Luis
Chisholm, James
Ribeiro-Claro, Paulo
Trindade, Tito
Keywords: Hybrid materials
Hydrogen bonds
Ice framework
Supramolecular chemistry
Water chemistry
X-ray diffraction
Issue Date: Jul-2010
Publisher: Wiley-VCH Verlag Berlin
Abstract: The supramolecular salt [H2pip]3[GeACHTUNGTRENUNG(hedp)2]·14H2O (1) [H2pip2+ =piperazine cation C4H12N2 2+; hedp5 =deprotonated form of etidronic acid, C2H3P2O7 5 ) is reported. This consists of an organic–inorganic hybrid hydrogen-bonded nanoporous framework, the internal surface of which acts as a template for the three-dimensional (3D) clustering of water molecules. The structure and molecular dynamics of this material are characterised by single-crystal X-ray diffraction, thermogravimetric analysis, Raman (H/D isotopic substitution) spectroscopy, and 2H solid-state (wide-line and MAS) NMR spectroscopy. Material 1 is shown to be unusual because 1) few nanoporous materials exhibit a well-organised 3D framework of water molecules, 2) it provides a unique opportunity to follow experimentally and to rationalise the deconstruction of a 3D water framework and 3) despite the fact that the hybrid framework is a supramolecular salt, the structure does not collapse after dehydrati
Peer review: yes
DOI: 10.1002/chem.201000431
ISSN: 0947-6539
Appears in Collections:DQ - Artigos

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