Darstellung und Kristallstruktur einer neuen isomeren Form von As4S4

Preparation and Crystal Structure of a New Isomeric Form of As₄S₄ As₄S₄(II) was prepared by melting of the pure elements As and S in the atomic ratio 1:1 at the temperature range 500°–600°C and a quickly cooling to the room temperature. Yellow-orange coloured and very thin platy single crystals were recrystallized from a CS₂ solution. The crystal parameters are: a = 11.193, b = 9.994, c = 7.153 Å and β = 92.8°. The space group in P2₁/n (No. 14). The molecule can be principally deduced from the As₄-tetraedron. By the connection of the folded plane SAs₃ to the platy pyramide S₃As the cage structure of the As₄S₄(II) molecule will be built.