ISSN:
0044-2313
Keywords:
Mercury fluorides
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
On Fluorides of Univalent and Divalent MercuryFor the first time Rb2HgF4 and Cs2HgF4, both colourless, have been obtained. From single crystal investigations they crystallize tetragonal in the K2NiF4-type of structure, space group I4/mrnm-D4h17 (No. 139) with a = 455.6 pm, c = 1375.7 pm, Z = 2 for Rb2HgF4 and a = 462.5 pm, c = 1451.8 pm, Z = 2 for Cs2HgF4. The determination of the crystal structure of Hg2F2 confirmed the unit cell [1] with a = 367.00(4) pm, c = 1090.1(2) pm, Z = 2 space group I4/mrnm-D4h17 (No. 139).
Notes:
Neu dargestellt wurden Rb2HgF4 und Cs2HgF4, beide farblos. Nach Einkristalluntersuchungen kristallisieren beide tetragonal im K2NiF4-Typ in der Raumgruppe I 4/mmm-D4h17 (Nr. 139), mit a = 455,6 pm, c = 1375,7 pm, Z = 2 für Rb2HgF4 und a = 462,5 pm, c = 1451,8 pm, Z = 2 für Cs2HgF4. Einkristalluntersuchungen an Hg2F2, hellgelb, bestätigen die Elementarzelle [1] mit a = 367,00(4) pm, c = 1 090,1(2) pm, Z = 2 in der Raumgruppe I 4/mmm-D4h17 (Nr. 139).
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19926180110
