An open-framework silicogermanate with 26-ring channels built from seven-coordinated (Ge,Si)10(O,OH)28 clusters

Kirsten E. Christensen, Charlotte Bonneau, Mikaela Gustafsson, Lei Shi, Junliang Sun, Jekabs Grins, Kjell Jansson, Isabelle Sbille, Bao Lian Su, Xiaodong Zou

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

We report a new open-framework silicogermanate SU-61 containing 26-ring channels with a low framework density. It can be seen as a crystalline analogue to the mesoporous silica MCM-41. The structure is built from the assembly of (Ge,Si)10(O,OH)28 clusters. It is the first time that silicon has been successfully introduced in the Ge10 cluster in significant amounts (21% of the tetrahedral sites). Five- and six-coordinated Ge10 clusters have previously been observed in other germanate compounds leading to either dense or open structures. In SU-61, the seven-coordinated clusters fall onto yet another underlying net, the osf net. SU-61, along with other Ge10 based frameworks, shows the versatility of the germanate system to adopt defined topologies playing on the connectivity of the clusters following the principles of net decoration and scale chemistry.

langue originaleAnglais
Pages (de - à)3758-3759
Nombre de pages2
journalJournal of the American Chemical Society
Volume130
Numéro de publication12
Les DOIs
Etat de la publicationPublié - 26 mars 2008

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