LIGANDS FOR PNICOGEN CHELATE COMPLEXES WITH A METAL OF SUBGROUP VIII AND USE OF THE COMPLEXES AS CATALYSTS FOR HYDROFORMYLATION, CARBONYLATION, HYDROCYANATION OR HYDROGENATION

摘要

Disclosed are pnicogen ligand compounds of the formula I which have twopnicogen-containing groups joined to one another via a xanthene-like ortriptycene-likemolecular skeleton and in which at least one pyrrole group is covalently boundvia its nitrogen atom to each pnicogen atom form complexes with metals oftransition group VIII. These compounds are useful as catalysts for thehydroformylation of olefins.(see formula I)