ChemInform Abstract: TWO MODIFICATIONS OF “TL2CL3”‐MIXED VALENCE THALLIUM(I) HEXAHALOGENOTHALLATES(III) TL3(TLCL3)

Abstract

, die durch Umsetzung von festem TlCl mit wäßriger TlCl3‐Lösung (200 °C, 24 h) dargestellt werden.

Synthesis and Properties of Charge-Ordered Thallium Halide Perovskites, CsTl+0.5Tl3+0.5X3 (X = F or Cl): Theoretical Precursors for Superconductivity?

“…As in the anharmonic displacement model, these distances are only to Cl1 and not Cl2 and are always shorter than the expected (Shannon) 3.31 Å Tl + –Cl distance and most likely can be explained by the presence of some Tl 3+ or vacancies. For comparison, the main Cs + –Cl (∼3.82 Å) and Tl 3+ –Cl (∼2.58 Å) distances obtained in both models are comparable with those in similar compounds, including Cs 2 TlCl 5 (Cs–Cl distance of 3.6816 Å and Tl 3+ –Cl distance of 2.5963 Å) and Tl 2 Cl 3 (Tl 3+ –Cl distance of ∼2.57 Å) . Tl + –Cl distances are difficult to compare with those of other compounds because there are likely to be some vacancies, as well as some Tl 3+ in those positions; moreover, Tl + at the relatively low (i.e., ≤6) coordination is rare.…”

“…The PXD pattern calculated from this split atom refinement is illustrated in Figure 2c 31 and Tl 2 Cl 3 (Tl 3+ −Cl distance of ∼2.57 Å). 32 Tl + −Cl distances are difficult to compare with those of other compounds because there are likely to be some vacancies, as well as some Tl 3+ in those positions; moreover, Tl + at the relatively low (i.e., ≤6) coordination is rare.…”