Darstellung,Struktur und Eigenschaften von Ag10Si3S11

Preparation, Crystal Structure and Properties of Ag₁₀Si₃S₁₁ The novel orange-red thiosilicate Ag₁₀Si₃S₁₁ is formed besides Ag₈SiS₆ by the high - temperature reaction between Ag₂S, Si and S. The single crystal structure analysis shows the compound to be silver orthothiosilicate thiodisilicate-(1:1) Ag₁₀(SiS₄)(Si₂S₇). The mean Si? S bond lengths are 2.137 Å for SiS₄^(4?) and 2.129 Å for the hitherto unknown Si₂S₇^(6?). The cation sublattice is slightly imperfect. inferring a certain mobility of the Ag⁺ ions. Ag₁₀Si₃S₁₁ crystallizes in the triclinic space group P1 . Lattice constants see ?Inhaltsübersicht”?. The vibrational spectrum (IR) shows absorptions within the characteristic spectral regions for asymmetric and symmetric stretching vibrations of the SiS₄ tetrahedra at 490–515 and 423–433 cm^?1.