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ChemInform Abstract: Na5Sn13: A New Zintl Phase with a Complex Network Structure Constructed from Tin Pentagons.

✍ Scribed by J. T. VAUGHEY; J. D. CORBETT

Publisher: John Wiley and Sons
Year: 2010
Weight: 30 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199750005

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✦ Synopsis

The new title compound is obtained in ¿ 95% yield from a stoichiometric Na-Sn mixture upon heating at 800 • C and annealing of the quenched mixture for 10 weeks at 280 • C. As revealed from the single-crystal XRD data, the three-dimensional structure (orthorhombic, Cmcm, Z = 16) consists of infinite chains of interconnected clusters of tin pentagons stacked along the a axis. The pentagons contain four 4-coordinate Sn0 atoms and one 3-coordinate Sn-. The structure conforms well to the Zintl-Klemm electron-counting formalism. Na5Sn13 shows diamagnetic behavior. -(VAUGHEY,

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