A gadolinium and niobium oxide sulfide, Gd₃NbS₃O₄

Abstract

Key indicatorsSingle-crystal X-ray study T = 293 K Mean '(Nb±O) = 0.005 A Ê R factor = 0.030 wR factor = 0.061 Data-to-parameter ratio = 30.7For details of how these key indicators were automatically derived from the article, see

Rare-earth-based chalcogenides and their derivatives: an encouraging IR nonlinear optical material candidate

“…Among them, the Sm and Gd compounds display NCS structures (space group: Pna 2 1 ), while the Ce and Dy compounds exhibit CS structures (space group: Pnma ), which is mainly caused by the various coordination types and stacking direction of Nb atoms as well as the different ionic radii of RE 3+ cations. 182–185…”

“…Among them, the Sm and Gd compounds display NCS structures (space group: Pna2 1 ), while the Ce and Dy compounds exhibit CS structures (space group: Pnma), which is mainly caused by the various coordination types and stacking direction of Nb atoms as well as the different ionic radii of RE 3+ cations. [182][183][184][185] The crystals of RE 3 NbS 3 O 4 were prepared through solid-phase reactions at 1273 K using interlinks with 4 [M II S 4 ] tetrahedra by sharing S corners, constructing corrugated 2D [M II Ge 2 OS 6 ] 4− layers along the ab plane. The [EuOS 7 ] bicapped trigonal prisms are located within these 2D interlayers and serve to bridge adjacent [EuOS 7 ] together, forming the 3D network (Fig.…”

“…In order to better illustrate the advantages of RE-based chalcogenide compounds and address the challenges in this field, this paper provides detailed explanations for 85 representative examples out of over 400 NCS compounds. 68–187 These examples are categorized into four groups based on the various asymmetric building motifs: (1) RE-based chalcogenides containing tetrahedral motifs; (2) RE-based chalcogenides containing lone-pair-electron motifs; (3) RE-based chalcogenides containing [BS 3 ] and [P 2 Q 6 ] motifs; and (4) RE-based chalcohalides and oxychalcogenides. Finally, the conclusions and perspectives for RE-based chalcogenides and their derivatives are provided for further exploration.…”