Abstract To investigate metal–ligand cooperativity as a strategy for promoting nickel- catalyzed alkene hydrogenation, cationic and neutral nickel (II) hydride complexes of the aliphatic pincer ligand PNHP Cy {PNHP Cy= HN [CH 2 CH 2 P (Cy) 2] 2} have been synthesized and characterized. Cationic hydride complex [(PNHP Cy) Ni (H)] BPh 4 (2) catalyzed the hydrogenation of styrene and 1-octene under mild conditions. Only low ...
