Sn₉ ^4– Zintl Ions as Reactive Precursor for Neat Solids: Syntheses and Crystal Structures of Rb₄[SnTe₄], KxCs_4–x[SnTe₄], and K_xCs_10–x[Sn₄Te₁₂]

Abstract

Dedicated to Professor Hubert Schmidbaur on the occasion of his 75 th birthdayThe reactions of Zintl ions Sn 9 4− formed in ethylenediamine solutions of K 2 Cs 2 Sn 9 and Rb 4 Sn 9 with elemental tellurium have been investigated. Addition of elemental tellurium to the filtrates of these solutions leads -depending on the reaction conditions -to four different products: Compounds K 0.36 (1 [Sn 4 Te 12 ] (4). Compounds 1, 2 and 4 have been structurally characterized by single-crystal X-ray diffraction.

Two Mixed-Anion Semiconductors in the Ba–Sn–Te–S System with Low Thermal Conductivity

“…The distances between the Sn–S bonds are comparable to those found in Ba 2 SnS 4 and Ba 3 Sn 2 S 7 . Furthermore, the bond distance of Sn2–Q1 is 2.544 Å, which is slightly shorter than the typical average Sn–Te distance of 2.735 Å in the compound Rb 4 SnTe 4 . However, it is longer than the average Sn–S distance in Ba 2 SnS 4 .…”

“…39 Furthermore, the bond distance of Sn2−Q1 is 2.544 Å, which is slightly shorter than the typical average Sn−Te distance of 2.735 Å in the compound Rb 4 SnTe 4 . 40 However, it is longer than the average Sn−S distance in Ba 2 SnS 4 . 39 The calculated bond valence sums (BVS) for Sn1 and Sn2 are 4.455 and 3.823, respectively, in agreement with the oxidation state of Sn 4+ .…”

Zintl‐Ionen, Käfigverbindungen und intermetalloide Cluster der Elemente der 14. und 15. Gruppe

“…In der Reaktion zwischen [Ge 9 ] 4− und [Sn 9 ] 4− mit elementarem Tellur wird das Clustergerüst abgebaut, und es entstehen gemischte Ge‐Te‐333 und Sn‐Te‐Polyanionen 334. 335…”

Development of a Concise Synthesis of (−)‐Oseltamivir (Tamiflu)

“…The reaction of [Ge 9 ] 4− and [Sn 9 ] 4− clusters with elemental tellurium led to the degradation of the cluster framework and the formation of mixed Ge–Te333 and Sn–Te polyanions 334. 335…”