π-Bonding and the lone pair effect in multiple bonds involving heavier main group elements: Developments in the new millennium.

A review. The coverage of that survey was focused on the synthesis, structure, and bonding of stable compds. of heavier main group elements. The most significant developments for each class were discussed in detail under the resp. sections. The key unifying feature of almost all mols. was that they were generally stabilized by the use of bulky substituents which block associative or various decompn. pathways. [on SciFinder(R)]