ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Investigations on the Structure of Thallium(I) Halide Mercurates(II)Tl4HgBr6 crystallizes tetragonal with a = 8.978, c = 8.812 Å and Z = 2 in the space group P4/mnc. Singlecrystal methods revealed isolated HgBr6-octahedra, compressed alonged the [001] axis, with thallium atoms between them. The results have been extended to clarify the structures of the isomorphous compounds (NH4)4HgBr6 (a = 9.011, c = 8.660 Å), Tl4HgJ6 (a = 9.529, c = 9.387 Å) and Tl4HgCl2Br4 (a = 8.896, c = 8.735 Å). It was impossible to obtain Tl4HgCl6; all attempts resulted in the formation of Tl10Hg3Cl16, which crystallizes tetragonal (a = 8.477, c = 23.699 Å).
Notes:
Tl4HgBr6 kristallisiert tetragonal (a = 8,978, c = 8,812 Å, Z = 2) in der Raumgruppe P4/mnc. Die Bestimmung der Kristallstruktur mit Einkristallmethoden ergab das Vorliegen von isolierten, längs [001] stark gestauchten HgBr6-Oktaedern, zwischen denen die Thalliumatome angeordnet sind. Aus Pulverdaten konnte Isomorphie mit (NH4)4HgBr6 (a = 9,011, c = 8,660 Å), Tl4HgJ6 (a = 9,529, c = 9,387 Å) und Tl4HgCl2Br4 (a = 8,896, c = 8,735 Å) festgestellt werden. Ein Tl4HgCl6 konnte nicht erhalten werden. Entsprechende Darstellungsversuche führten zum tetragonalen Tl10Hg3Cl16 (a = 8,477, c = 23,699 Å).
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19734010302
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