Darstellung und Kristallstruktur von CsSb₂Se₄

Abstract

CsSb2Se4 wurde durch hydrothermale Reaktion von Cs2CO3 mit Sb2Se3 bei einer Temperatur von 115°C dargestellt. Eine Röntgenstrukturanalyse ergab, daß die Verbindung Polyselenoantimonat(III)‐Anionen (Sb2Se4 ‐)n beinhaltet, die sowohl (Sb)SeSb‐ als auch (Sb)SeSe(Sb)‐Brücken aufweisen. Für eines der beiden unabhängigen Sb‐Atome wird eine ψ‐tetraedrische Koordination, für das andere eine ψ‐trigonalbipyramidale Koordination gefunden. Die SbSe‐Polyeder sind über gemeinsame Ecken und Kanten sowie über direkte SeSe‐Bindungen zu Schichten vernetzt.

H2N(CH2)2NH3+.[Mn{H2N(CH2)2NH2}3]2+.[Sb Se4]3−

“…Applications of mild solvothermal processes have led to a wealth of novel chalcogenides, ranging from unique thiometallate clusters to three-dimensional frameworks (Sheldrick & Kaub, 1986;Sheldrick & Wachhold, 1997;Krebs, 1983). Despite expectations of new and unusual electronic properties, the chemistry of the heavier chalcogenides is less developed.…”

First Quaternary A−Pb−Bi−Q (A = K, Rb, Cs; Q = S, Se) Compounds: Synthesis, Structure, and Properties of α- and β-CsPbBi3Se6, APbBi3Se6, (A = K, Rb), and APbBi3S6 (A = Rb, Cs)

“…Our previous work in the ternary A/Bi/Q systems can serve as a good foundation for exploration of the quaternary A/Pb/Bi/Q system, because the latter could be considered as quasi-ternary A/(Pb/Bi)/Q given the close resemblance of Bi 3+ ( Z = 83) and Pb 2+ ( Z = 82) in chemical and crystallographic terms. During the past decades, only a limited number of alkali metal group 15 chalcogenides have been studied such as ABiQ 2 , CsBi 3 S 5 , RbBi 3 S 5 , Cs 3 Bi 7 Se 12 , K 3 SbSe 4 , RbSb 3 Se 5 , Cs 2 Sb 4 Se 8 , and Cs 3 Sb 5 Se 9 . Recently, the conditions provided by the alkali metal chalcogenide flux led to the discovery of many more new compounds such as Cs 2 Sb 4 S 8 , CsSbS 6 , β- and γ-CsBiS 2 , KBi 3 S 5 , KBi 6.33 S 10 , K 2 Bi 8 S 13 , α- 30 and β-K 2 Bi 8 Se 13 ,18a K 2.5 Bi 8.5 Se 14 ,18a and BaBiTe 3 ; however, we could find no reports of A/Pb/Bi/Q compounds.…”

Solvothermal synthesis of [Mn(en)3]2[Mn4(en)9(SbSe 4)4]·2H2O: the first example of a selenoantimonate(v) acting as a ligand in a transition-metal complex

“…The title compound is the first structurally characterized example of a transition-metal complex containing SbSe 4 32 anions as ligands. Chalcogeno-antimonates(iii) often crystallize as extended frameworks [14][15][16] whereas chalcogeno-antimonates(v) form isolated anions 12,13 or dense structures. 17,18 The 19 However, the only examples of chalcogenopnictide(v) acting as ligands are AsS 4 32 groups in nickel complexes as established by spectroscopical methods, but no structural data were reported.…”