CYCLOPHANES-METAL-ARENE TERNARY COMPOUNDS - SYNTHESIS, CRYSTAL-STRUCTURE AND SPECTROSCOPIC PROPERTIES OF BI2BR6[2,2]PARACYCLOPHANE-PYRENE

In this paper we report the synthesis of a metal:[2,2]paracyclophane:a rene ternary compound of formula Bi,Br,:[2,2]paracyclophane:pyrene. Th e compound is characterised by elemental and thermal analysis, by elec tronic and IR spectroscopy and conductivity measurements in the solid state. The structure was determined by single-crystal X-ray diffractio n analysis: it consists of hexacoordinated bismuth atoms having in the nearest coordination sphere three bromines at 2.587(3), 2.635(4) and 2.656(3) Angstrom, two additional adjacent bromines at 3.353(4) and 3. 409(3) Angstrom of different polyhedra and one phenyl group of a [2,2] paracyclophane molecule. The latter bridge bismuth atoms connecting li near (BiBr3)(n) polymeric chains giving a two-dimensional network incl uding pyrene; the layers are packed by C ... C and C ... Br van der Wa als contacts.