STRUCTURAL CHARACTERIZATION OF 2 LARGE BISMUTH-COBALT CARBONYL CLUSTERS - (PPN)(2)[BI4CO9(CO)(8)(MU-CO)(8)]CENTER-DOT-2THF AND N)(2)[BI8CO14(CO)(12)(MU-CO)(8)]CENTER-DOT-1.08THF

The reaction of PPN[Bi2Co4(CO)(10)(mu-CO)] with Mo(CO)(3)(toluene) in THF yields, after slow oxidation, the large clusters, (PPN)(2)[Bi4Co9( CO)(8)(mu-CO)(8)] and (PPN)(2)[Bi8Co14(CO)(12)(mu-CO)(8)] [PPN = bis(t riphenylphosphine)iminium] which exhibit close-packed arrays of main g roup elements and transition metal atoms.