Syntheses and crystal structures of Pb(SeO3)2 and two modifications of Sn(SeO3)2

被引：0

作者：

Steinhauser, Georg ^{[1
]}

Luef, Christoph ^{[2
]}

Wildner, Manfred ^{[3
]}

Giester, Gerald ^{[3
]}

机构：

[1] Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Abteilung für Radiochemie, Stadionallee 2, A-1020 Wien, Austria

[2] Institut für Anorganische Chemie - Materialchemie, Universität Wien, Währinger Strasse 42/2, A-1090 Wien, Austria

[3] Institut für Mineralogie und Kristallographie, Universität Wien, Geozentrum, Althanstrasse 14, A-1090 Wien, Austria

来源：

Journal of Alloys and Compounds | 2006年 / 419卷 / 1-2期

关键词：

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. α-Sn(SeO3)2: space group P a over(3; a; 8.1725(5); Å; V; 545.84(6); Å3; Z = 4. β-Sn(SeO3)2 and Pb(SeO3)2: space group P21/c; 4.784(1)/4.811(2); b; 8.529(1)/8.768(4); c; 6.943(1)/7.079(3); β; 111.01(1)/110.10(2)°; 264.43(7)/280.4(2); Z = 2. β-Sn(SeO3)2 and Pb(SeO3)2 crystallize isotypic in a structure type known from Ti(SeO3)2; while α-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. © 2005 Elsevier B.V. All rights reserved;

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页码：45 / 49

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