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The crystal structure of ZnFe 3+2 (SeO3)4

Die Kristallstruktur von ZnFe 3+2 (SeO3)4

  • Anorganische Und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Summary

The new synthetic compound ZnFe 3+2 (SeO3)4 forms at low-hydrothermal conditions at 220 °C. It belongs to the monoclinic system; the structure was determined by single-crystal X-ray diffraction in the space group Pc. The unit cell data are:a=8.196(4) Å,b=7.997(4) Å,c=8.033(4) Å, β=92.27(3)°,V=526.1 Å3;Z=2. The structure of ZnFe 3+2 (SeO3)4 contains two types of FeO6 octahedra, one distorted ZnO5 trigonal bipyramid, and four selenite groups. Formal “clusters” consisting of the ZnO5 group, edge-linked with both FeO6 groups and one SeO3 pyramid, are connected by common corners, involving three further selenite groups to a framework structure.

Zusammenfassung

Die neue synthetische Verbindung ZnFe 3+2 (SeO3)4 bildet sich bei niedrighydrothermalen Bedingungen (220°C). Die Kristallstruktur wurde mit Einkristallröntgenmethoden in der monoklinen Raumgruppe Pc gelöst. Die Zellparameter sind:a=8.196(4) Å,b=7.997(4) Å,c=8.033(4) Å, β=92.27(3)°,V=526.1 Å3;Z=2. Die Kristallstruktur von ZnFe 3+2 (SeO3)4 weist zwei Arten von FeO6-Oktaedern, eine verzerrte trigonale ZnO5-Dipyramide sowie vier Selenitgruppen auf. Formal können „Cluster“, bestehend aus dem ZnO5-Polyeder, kantenverknüpft mit den beiden FeO6-Gruppen sowie einer SeO3-Pyramide, beschrieben werden. Die Verknüpfung über Ecken zu einer Gerüststruktur erfolgt unter Beteiligung von drei weiteren Selenitgruppen.

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Authors and Affiliations

  1. Institut für Mineralogie und Kristallographie, Geozentrum, Universität Wien, A-1090, Wien, Austria

    G. Giester

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  1. G. Giester
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Giester, G. The crystal structure of ZnFe 3+2 (SeO3)4 . Monatsh Chem 127, 347–354 (1996). https://doi.org/10.1007/BF00810880

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  • DOI: https://doi.org/10.1007/BF00810880

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