Zur Kenntnis der Phasen A_2−2xSn_5+xCl₁₂ (A = K, In)

Abstract

Wir berichten über die Strukturverfeinerung von A2‐2xSn5+xCl12‐Verbindungen (A = K+ bzw. In+) mit Einkristallmethoden. Sie kristallieren im Th7S12‐Strukturtyp (a = 1192(2) pm, c = 428,9(8) pm (K‐Salz); a = 1189,8(6) pm, c = 431,2(3) pm (In‐Salz)), den wir in der Raumgruppe P6 beschreiben. Darüber hinaus diskutieren wir die Möglichkeit einer meroedrischen Verzwillingung. Die Struktur dieser Verbindungen ist aufgrund ihrer Zusammensetzung zwangsläufig ungeordnet, und dies führt zu einer beträchtlichen nichtstöchiometrischen Phasenbreite, die offensichtlich durch die Größe und Polarität des A‐Kations beeinflußt werden kann.

Development of the Chemistry of Indium in Formal Oxidation States Lower than +3

“…Best known are the indium(I) halides, InCl, InBr, and InI, which, despite their sparing solubility in solvents that do not promote rapid disproportionation, afford the principal entry point to indium(I) chemistry. Structural authentication of simple (as opposed to mixed valence) In + derivatives has otherwise extended to the trifluoromethanesulfonate, tetrafluoroborate, and various ternary halogenometallate compounds, − as listed in Table . In + cations are also found in some ternary or other multicomponent solids, including InMo 4 O 6 , In 6 La 10 O 6 S 17 , InGaE 2 (E = Se or Te), and Pt 2 In 14 Ga 3 O 8 F 15 .…”

Kinetically Controlled Solid State Reactions in the System InCl3/SnDedicated to Professor Joachim Strähle on the Occasion of his 65th Birthday

“…5a). The charge transfer within the In 2 Sn 5 Cl 12 phase could well be mediated by diffusion of In 3ϩ via the same pathways as In ϩ (for a more detailed description of the structure see [10]). The question is, however, how the charge transfer is brought about.…”

“…In 2 Sn 5 Cl 12 , more correctly denoted as In 2Ϫ2x ᮀ x Sn 5ϩx Cl 12 (with 0 Յ x Յ 0.15), has a Th 7 S 12 type structure with three different cation sites, two of them being occupied in a random manner by In ϩ and Sn 2ϩ , the third one hosting (1Ϫx)In ϩ and x vacancies [10,11]. Due to this disorder the compound shows ionic conduction and this may be expected for the one mentioned before as well.…”

Crystal Structure and Magnetic Properties of Bi(Bi9)[NbCl6]3, a New Member of the Structure Family Bi(Bi9)[MX6]3, and the Crystal Structure of Bi8[Ta2O2Br7]2

“…Their central axis is filled with a coaxial string of disordered Bi atoms that, statistically, occupy only every fifth possible site. Other examples include the compounds Th 7 S 12 ,23 K 2 Sn 5 Cl 12 24 and several apatite25 and hollandite type structures 26. With Bi(Bi 9 )[NbCl 6 ] 3 the electron density along the c ‐axis is sufficient for only two additional Bi + ions per unit cell.…”