From s to p coordination: tetraisopropylcyclopentadienyl dichlorides [(C5HR4)ECl2] (R = CHMe2) of phosphorus, arsenic, antimony, and bismuth.
[(C5HR4)PCl2] (1a), [(C5HR4)PBr2] (1b), [(C5HR4)AsCl2] (2), and [(C5HR4)SbCl2] (3), have been obtained from the corresponding pnicogen trihalides and sodium tetraisopropylcyclopentadienide (R = CHMe2). The mol. structures of 1, 2, and 3 as well as the related structure of [(C5HR4)BiCl2] (4) display increasing p character of hetero atom to cyclopentadienyl bonding with increasing metallic character of the hetero atom.
Dieser Eintrag ist freigegeben.