Bemerkenswerte Wirt-Gast-Beziehungen in Tetraphenylphosphoniumsalzen vontris-Trithiocarbonato-Komplexen des As(III), Bi(III) und Fe(III)

Summary The structure and packing of the lattice of the compounds (PPh₄)₃[As(CS₃)₃] (1), (PPh₄)₃[Bi(CS₃)₃] (2), and (PPh₄)₃[Fe(CS₃)₃]·H₂O (3) is discussed in terms of hostguest chemistry in a soft matrix of large cations. The hitherto unknown Fe-complex was characterized by elemental analysis and single crystal structure analysis. Here CS₃^2– acts as a classical bidentate ligand, whereas in the case of the arsenic and bismut complexes, the coordination of this ligand is essentially unidentate due to an interaction with the lone pair on the central atom. For the last two complexes, there seems to be an influence of the packing on the coordination geometry.

Herrn Prof. Dr.E. Hengge zum 65. Geburtstag gewidmet