Studies of polyhalides. 35. On the dimethyl(n-propyl)phenylammoniumtriiodide n-PrMe2PhNI3 and on the series of dimethyl(isopropyl)phenylammoniumpolyiodides i-PrMe2PhNIx, with x = 3, 5, 7, 8, and 9 [German]

摘要

The new compounds n-PrMe2PhNI3 and i-PrMe2PhNIx, with x = 3, 5, 7, 8 and 9 have been prepared by reaction of iodine I-2 with n-PrMe2PhNI in EtOH and with i-PrMe2PhNI in MeOH respectively. The crystal structures have been determined by single crystal X-ray diffraction methods. The triiodide n-PrMe2PhNI3 has a layerlike structure with alternating anionic and cationic layers. The similar, but not isotypic triiodide i-PrMe2PhNI3 may be described as a layerlike packing of asymmetric anions and tetraedral cations, too. The structure of the pentaiodide i-PrMe2PhNI5 consists of zig-zag like iodide-diiodine chains with additional iodine molecules attached to the iodide ions in trans position. The pentaiodide part of the heptaiodide ion in i-PrMe2PhNI7 forms meanderlike iodide-bis(diiodine) chains also with additional iodine molecules in trans position. The structure of the hexadecaiodide ion I-16(2-) in the octaiodide i-PrMe2PhNI8 contains fourteen-membered rings, which are catenated by iodine molecules and linked to layers with ten- and two types of fourteen membered rings as meshes. The anionic iodine part of the enneaiodide i-PrMe2PhNI9 contains fourteen-membered rings, too, which are tied up by two iodine molecules forming in addition ten membered rings which are lined up alternately. [References: 43]