FORMATION OF INDENYL DIHYDRIDE COMPLEXES FROM AN IRIDIUM POLYHYDRIDE COMPLEX - MOLECULAR-STRUCTURES OF (ETA(5)-C9H7)IRH2(PPR3I) AND THE ETA(3)-INDENYL INTERMEDIATE (ETA(3)-C9H7)IRH2(PPR3I)(2)

The reaction of IrH5(PPr3i)(2) and indene at 60 degrees C leads to the formation of (eta(3)-C9H7)IrH2(PPr3i)(2) and (eta(5)-C9H7)IrH2(PPr3i) . The molecular structures of these products have been determined by s ingle crystal X-ray diffraction studies. The eta(3)-indenyl complex is stable only in the solid state and converts to the eta(5)-indenyl com plex product upon dissolution.