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

PNICOGEN CHELATE COMPOUNDS WHICH HAVE TWO PNICOGEN-CONTAINING GROUPS JOINED TO ONE ANOTHER VIA A XANTHENE-LIKE OR TRIPTYCENE-LIKE MOLECULAR SKELETOR AND IN WHICH AT LEAST ONE PYRROLE GROUP IS COVALETLY BOUND VIA ITS ITS NITROGEN ATOM TO EACH PNICOGEN ATOM FROM COMPLEXES WITH METALS OF TRANSITION GROUP VIII WHICH ARE USEFUL AS CATALYSTS FOR THE HYDROFORMYLATION OF OLEFINS.