Can I read Contribution to the crystal chemistry of rare earth chalcogenides. III. The crystal structure and twinning of SmS~1.9~ on EtoBox?

Contribution to the crystal chemistry of rare earth chalcogenides. III. The crystal structure and twinning of SmS~1.9~ by R. Tamazyan; H. Arnold; V. Molchanov; G. Kuzmicheva; I. Vasileva is a Chemistry article available to read on EtoBox.

What is Contribution to the crystal chemistry of rare earth chalcogenides. III. The crystal structure and twinning of SmS~1.9~ about?

The structure of samarium disulfide SmS~1.9~, space group P4~2~/n; lattice constants a = 19.717(2)Å ; c = 15.928(1) Å has been determined and refined by LS method to R = 0.0345; R~w~ = 0.0419. The structure is a tenfold superstructure from the structure type ZrSSi. [S2]^2–^ dumbbells with interatomic distances 2.146(1)Å between S atoms were observed in the structure. Fully ordered vacancies and orientation of the [S2]^2-^ dumbbells are responsible for the formation of the superstructure. The investigated sample was twinned by the reticular merohedral law, the twin symmetry is 4/mm ́m ́, the twinning symmetry elements are (310) and (120) mirror planes and the twin index is n=5.

Who reads Contribution to the crystal chemistry of rare earth chalcogenides. III. The crystal structure and twinning of SmS~1.9~?

Author

R. Tamazyan; H. Arnold; V. Molchanov; G. Kuzmicheva; I. Vasileva

Publisher

Walter de Gruyter GmbH

Published

2000

Language

EN

Field

Chemistry (Physical Sciences)