RODRÍGUEZ IGLESIAS , María Amor

A stable Nickel(II) methyl complex containing a diphosphinoboryl (PBP) pincer ligand is described. Mechanistic studies on the hydrogenolysis of the Ni-Me bond suggest a metal ligand cooperation mechanism that involves the intermediacy of a - B‒H Ni(0) species that further undergoes B‒H oxidative addition to form a Ni(II) hydride complex.

New quadruply bonded dimolybdenum complexes of the terphenyl ligand Ar Xyl2 (Ar Xyl2 = C 6H 3-2,6-(C 6H 3-2,6-Me 2) 2) have been prepared and structurally characterized. The steric hindrance exerted by the Ar Xyl2 groups causes the Mo atoms to feature unsaturated four-coordinate structures and a formal fourteen-electron count.