ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Description and Structural Study of a New Family of Sheet Compounds of the General Composition (UO)2RS3 (R = Gd to Lu and Y)The reaction of UOS was tested on various sulfides. It was only positive in the case of the R2S3 sulfides at very high temperature (1500 - 1900°C) with formation of the title compounds. The crystal structure was solved in the case of (UO)2ErS3: tetragonal cell, space group 14/m mm, a = 3.785, c = 20.83 Å, Z = 2. A sheet structure is formed by alternating (UO) and (ErS3) sheets. The apparent oxydation state of U is 3.5, and there is only one serie of positions for this element. But it is presently impossible to choose between mixed valencies or intermediate valency to represent the electronic state of U.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19865400909