US EPA

8447433 

Journal Article 

Preparation and Crystal Structures of Te3S3(AsF6)2, Te2Se4(SbF6)2, and Te2Se4(AsF6)2 

Gillespie, RJ; Luk, W; Maharajh, E; Slim, DR 

1977 

Yes 

Inorganic Chemistry
ISSN: 0020-1669
EISSN: 1520-510X 

16 

4 

892-896 

English 

10.1021/ic50170a034 

The compounds Te3S3(AsF6)2, Te2Se4(SbF6)2, and Te2Se4(AsF6)2 have been prepared and their crystal structures determined by three-dimensional x-ray counter measurements. Crystals of Te3S3(AsF6)2 are monoclinic with a = 8.421 (6) Å, b = 11.828 (4) Å, c = 15.279 (3) Å, and β = 90.92 (5)°. The structure has been refined in the space group P21/n to a final agreement index R2 of 0.088 for 1292 independent reflections. Crystals of Te2Se4(SbF6)2 are orthorhombic with a = 12.117 (11), b = 8.748 (6), and c = 15.772 (5) Å. The structure has been refined in the space group P212121 to a final agreement index R2 of 0.117 for 1465 independent reflections. Crystals of Te2Se4(AsF6)2 are orthorhombic with a = 8.640 (7), b = 12.012 (7), and c = 15.272 (9) Å. The structure has been refined in the space group P212121 to a final agreement index R2 of 0.144 for 838 independent reflections. The structures of the three compounds consist of discrete ions in which the cations can be described as consisting of a three-membered ring and a five-membered ring fused together or as a boat-shaped six-membered ring with a cross-ring bond, i.e., as a bicyclo[3.1.0]hexane type structure. © 1977, American Chemical Society. All rights reserved.