Ein Germanat mit offener Gerüststruktur und Polycuban-artiger Topologie

Li, Hailian; Eddaoudi, Mohamed; Yaghi, Omar M.

doi:10.1002/(sici)1521-3757(19990301)111:5<682::aid-ange682>3.0.co;2-7

Cited by 21 publications

(2 citation statements)

References 8 publications

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“…Recently our group has reported new germanate frameworks with four-, five-, and six-coordinate Ge atoms and that contain exchangeable organic bases. ASU-12 [27] with framework composition M 2 M' 4 T 8 O 29 F 4 contains [(CH 3 ) 2 NH 2 ] and ASU-14 [28] with framework composition MM' 4 T 4 X 22 (X O, OH) contains diprotonated piperazine, [HNC 4 H 8 NH] 2 . ASU-12 is the first material of this class in which exchange of the organic template by inorganic cations has been demonstrated.…”

Section: Germanate Zeolitic Materialsmentioning

confidence: 99%

Germanate Zeolites: Contrasting the Behavior of Germanate and Silicate Structures Built from Cubic T8O20 Units (T=Ge or Si)

1999

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A brief review of germanate-based zeolitelike structures is given. The frameworks of new germanates containing cubic Ge 8 O 20 clusters are analyzed in detail and compared with those of related silicates. It is shown that some topologies are suitable for silicates, but not for germanates; that others are suitable for germanates but not for silicates; and that a third class is suitable for both types of material.

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Section: Germanate Zeolitic Materialsmentioning

confidence: 99%

Germanate Zeolites: Contrasting the Behavior of Germanate and Silicate Structures Built from Cubic T8O20 Units (T=Ge or Si)

1999

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“…With regard to open-framework topologies, only a limited number of germanates have been reported. − Two of them, obtained by hydrothermal synthesis, with formula Ge 9 O 19 [MNH 3 ] 2 NH 4 (M = Cu, Ag) have been recently reported by some of the authors . In these compounds the transition metals are forming linear complexes without interacting with the framework.…”

Section: Introductionmentioning

confidence: 99%

A Copper Germanate Containing Potassium in Its Two-Dimensional Channel Network

et al. 2000

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Single crystals of the new copper(II) germanate K2Cu3Ge5O14 have been grown. Conditions for the synthesis are reported. The crystal structure of this material has been established by single-crystal X-ray diffraction: triclinic, space group P1̄ a = 6.1859(4) Å, b = 7.1484(5) Å, c = 7.8491(5) Å, α = 82.150(1)°, β = 72.072(1)°, γ = 80.773(1)°. The structure consists of layers of composition formed by GeO4 tetrahedra and GeO6 octahedra. The cohesion among them is established through chains of edge-sharing CuO5 square pyramids and CuO6 octahedra. This 3D structure contains a two-dimensional channel network were potassium ions are hosted. The downward deviation from Curie−Weiss behavior observed under 30 K in the molar magnetic susceptibility of K2Cu3Ge5O14 is attributed to the effect of the crystal field splitting of the ground term.

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