Synthesis and crystal chemistry of Pb(SeO3)2 and two modifications of Sn(SeO3)2

Autor(en)

Georg Steinhauser, Christoph Luef, Manfred Wildner, Gerald Giester

Abstrakt

Single crystals of two modifications of Sn(SeO3)2 have been synthesized from SnCl2, SeO2 and H2O at low-hydrothermal conditions (T = 490 K), tiny crystals of Pb(SeO3)2 were precipitated at T = 363 K from solutions of SeO2 (aq.) and Pb(CH3COO)4 in pure acetic acid. The structures were determined from CCD X-ray diffraction data and refined to R1 = 0.019, 0.029 and 0.045, respectively. a-Sn(SeO3)2: space group P a over(3, ¯), a = 8.1725(5) A°, V = 545.84(6) A°3, Z = 4. ß-Sn(SeO3)2 and Pb(SeO3)2: space group P21/c, a = 4.784(1)/4.811(2), b = 8.529(1)/8.768(4), c = 6.943(1)/7.079(3) A°, ß = 111.01(1)/110.10(2)°, V = 264.43(7)/280.4(2) A°3, Z = 2. ß-Sn(SeO3)2 and Pb(SeO3)2 crystallize isotypic in a structure type known from Ti(SeO3)2, while a-Sn(SeO3)2 is structurally related to Me2+(NO3)2 compounds. Both structure types are built from Me4+O6 (Me = Sn, Pb) octahedra, which are interlinked by trigonal pyramidal SeO3 groups via common corners to framework structures. Œ 2005 Elsevier B.V. All rights reserved.

Organisation(en)

Institut für Funktionelle Materialien und Katalyse, Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Technische Universität Wien

Journal

Journal of Alloys and Compounds

Band

419

Seiten

45-49

Anzahl der Seiten

5

ISSN

0925-8388

Publikationsdatum

2006

Peer-reviewed

Ja

ÖFOS 2012

104011 Materialchemie, 1051 Geologie, Mineralogie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/46afada5-b34c-46dc-80fb-5a55640888a4