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ChemInform Abstract: Edge-Sharing SiN4 Tetrahedra in the Highly Condensed Nitridosilicate BaSi7N10.

✍ Scribed by H. HUPPERTZ; W. SCHNICK

Publisher: John Wiley and Sons
Year: 2010
Weight: 28 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199716007

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✦ Synopsis

Edge-Sharing SiN4 Tetrahedra in the Highly Condensed Nitridosilicate BaSi7N10.

-Transparent, colorless crystals of the novel title compound are prepared by reaction of Ba and Si(NH)2 at 1650 • C in a highfrequency furnace. The structure (monoclinic, Pc, Z = 2), as determined by single-crystal XRD, consists of a three-dimensional framework of both cornerand edge-sharing SiN4 tetrahedra. This compound, in which vertex-sharing is not exclusively in favor of edge-sharing, represents the most highly condensed multinary nitridosilicate hitherto known. It exhibits almost the same degree of condensation as Si3N4.

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