An Open-Framework Germanate with Polycubane-Like Topology

Hailian Li; Mohamed Eddaoudi; Omar M Yaghi

doi:10.1002/(SICI)1521-3773(19990301)38:5<653::AID-ANIE653>3.0.CO;2-C

An Open-Framework Germanate with Polycubane-Like Topology

Angew Chem Int Ed Engl. 1999 Mar 1;38(5):653-655. doi: 10.1002/(SICI)1521-3773(19990301)38:5<653::AID-ANIE653>3.0.CO;2-C.

Authors

Hailian Li¹, Mohamed Eddaoudi¹, Omar M Yaghi¹

Affiliation

¹ Supramolecular Design and Discovery Group, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604 (USA), Fax: (+1) 602-965-2747.

PMID: 29711558
DOI: 10.1002/(SICI)1521-3773(19990301)38:5<653::AID-ANIE653>3.0.CO;2-C

Abstract

Body-centered Ge₉ parallelepiped building blocks form the basis of the structure of [Ge₉ O₁₈ (OH)₄ ]⋅2 (H₂ ppz)⋅0.5 (H₂ O) (ASU-14, ppz=piperazine). In this new structure type for an open-framework germanate (see picture for a section of the structure) the building blocks are linked together at each of their eight vertices to give the rare polycubane topology with an intersecting channel system of ten- and eight-membered rings (pore sizes 5×6 and 4×4 Å² , respectively) in which the piperazinium cations and water molecules reside.

Keywords: Cubanes; Germanium; Microporosity; Solid-state structures; Zeolite analogues.