title: Open-framework germanate built from the hexagonal packing of rigid cylinders.
abstract: We present a novel open-framework oxide material constructed from Ge(10)(O,OH)(28) (Ge(10)) oxide clusters prepared via a nonsurfactant route. The material shows two distinct pore windows of 9.43 and 4.65 A and a low framework density structure of 12.7 Ge atoms per 1000 A(3). The topological study leads to the recognition of a newly observed trinodal 6,7-heterocoordinated net related to the 7-coordinated swh net. The structure displays large rigid cylinders showing features indicating a growth mechanism by hard-sphere packing of the inorganic moiety similar to that observed in mesoporous materials.
authors.affiliation: Structural Chemistry and Berzelii Center EXSELENT on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden. charlotte.bonneau@kip.jst.go.jp
authors.forename: Charlotte
authors.initials: C
authors.lastname: Bonneau
authors.forename: Junliang
authors.initials: J
authors.lastname: Sun
authors.forename: Rebeca
authors.initials: R
authors.lastname: Sanchez-Smith
authors.forename: Bing
authors.initials: B
authors.lastname: Guo
authors.forename: Daliang
authors.initials: D
authors.lastname: Zhang
authors.forename: Andrew Kentaro
authors.initials: AK
authors.lastname: Inge
authors.forename: Mattias
authors.initials: M
authors.lastname: Edén
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zou