Synthese und Strukturuntersuchungen von Iodocupraten(I) VI. Iodocuprate(I) mit zweikernigen Anionen [CU₂I₄]²⁻ und [Cu₂I₆]⁴⁻/ Syntheses and Structure Analyses of Iodocuprates(I) VI. Iodocuprates(I) with Dinuclear Anions [Cu₂I₄]²⁻ and [Cu₂I₆]⁴⁻

Bis(dipyridiniomethan)-di-μ-iodotetraiododicuprate(I), [Py 2 CH 2 ] 2 [Cu 2 I 6 ] and two modifications of bis(tetraphenylphosphonium )-di-μ-iodo-diiododicuprate(I) were obtained by reacting Cu with I 2 and [Py 2 CH 2 ]I 2 or [PPh 4 ]I in acetone. The crystal structures of these com pounds are built up by the cations and the binuclear anions: edge sharing Cul 4 -tetrahedra in [Cu 2 I 6 ] 4- and edge sharing, nearly trigonal planar Cul 3 -units in [Cu 2 I 4 ] 2- . Whereas the Cu 2 I 4 anions (-A ) are centrosymmetric and almost planar, the anions (-B) are folded about the bridging I···I contact. The anions [Cu 2 I 6 ] are in intimate contact with the cations via short intermolecular I···N and I···C interactions.