Publicação
3D-2D-0D Stepwise deconstruction of a water framework templated by a nanoporous organic-inorganic hybrid host
| Resumo: | 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 |
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| Autores principais: | Rocha, Joao |
| Outros Autores: | Shi, Fa-Nian; Almeida Paz, Filipe A.; Mafra, Luis; Sardo, Mariana; Cunha-Silva, Luis; Chisholm, James; Ribeiro-Claro, Paulo; Trindade, Tito |
| Assunto: | Hybrid materials Hydrogen bonds Ice framework Supramolecular chemistry Water chemistry X-ray diffraction |
| Ano: | 2010 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Aveiro |
| Idioma: | inglês |
| Origem: | RIA - Repositório Institucional da Universidade de Aveiro |
| Resumo: | 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 |
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