Zur Neuuntersuchung des Phasendiagramms TlI—SnI2

Redetermination of the Phase Diagram TlI—SnI² A reinvestigation of the phase diagram TlI—SnI₂ revealed the existence of a not yet known ternary 4 : 1 compound of the formula Tl₄SnI₆, which decomposes peritectoidally at 229^°C. The congruent melting points of the other three ternary compounds in the system, Tl₃SnI₅, TlSnI₃, and TlSn₂I₅, at 329^°C, 292^°C and 307^°C, respectively, agreed well with former specifications. However the polymorphic transitions of the compounds Tl₃SnI⁵ and TlSn₂I₅ described by other authors could not be verified.