Superstructures and Chemical Bonding in Rare Earth Metal Polytellurides RETe2-δ 
(RE=La−Nd; Sm−Tm; 0≤δ≤0.2)

Doert, Thomas; Poddig, Hagen; Finzel, Kati

doi:10.1002/zaac.202300118

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Superstructures and Chemical Bonding in Rare Earth Metal Polytellurides RETe_2-δ (RE=La−Nd; Sm−Tm; 0≤δ≤0.2)

MPS-Authors

/persons/resource/persons126604

Finzel, Kati
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Doert, T., Poddig, H., & Finzel, K. (2023). Superstructures and Chemical Bonding in Rare Earth Metal Polytellurides RETe_2-δ (RE=La−Nd; Sm−Tm; 0≤δ≤0.2). Zeitschrift für anorganische und allgemeine Chemie, 649(16): e202300118, pp. 1-12. doi:10.1002/zaac.202300118.

Cite as: https://hdl.handle.net/21.11116/0000-000D-9464-B

Abstract

Polychalcogenides REX2-δ (X=S, Se, Te; 0≤δ≤0.2) of trivalent rare earth metals RE have been investigated in recent years to shed light on the structural diversity as a function of compositional, metric, thermodynamic, and electronic situation. Whereas the former aspects have comparable influence on the structures of all polychalcogenides REX2-δ, the bonding situation was assumed different for tellurides due to tellurium's higher tendency to delocalize electrons. The crystal structures generally contain puckered [REX] double slabs and planar [X] layers, the latter hosting different distortions from a square-like arrangement. The distortion patterns of sulfides and selenides can be understood by a Zintl-type approach; they are dominated by localization of valence electrons in mono- (X2−) or dinuclear (X22−) anions only. This review discusses crystal structures of some rare-earth metal polytellurides RETe2-δ (0≤δ≤0.2) and bonding features in the chalcogenide layers and relates them to their sulfide and selenide counterparts. © 2023 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH.