Why are (NN2)Ni pincer complexes active for alkyl-alkyl coupling: ß-H elimination is kinetically accessible but thermodynamically uphill

Breitenfeld, JanVechorkin, OlegCorminboeuf, ClémenceScopelliti, RosarioHu, Xile2010-08-122010-08-122010-08-12201010.1021/om1007506https://infoscience.epfl.ch/handle/20.500.14299/52151WOS:000281472500002Isomerization and olefin exchange experiments show that β-H elimination is kinetically viable but thermodynamically unfavorable in [(MeNN2)Ni-alkyl] complexes. The intermediacy of Ni-hydride species was corroborated by a trapping experiment. The alkyl complex [(MeNN2)Ni-propyl] catalyzes olefin isomerization.Catalyzed Cross-CouplingsGrignard-ReagentsHydride ComplexesNickel-ComplexesHalidesBromidesIodidesLigandNiHydrosilylationWhy are (NN2)Ni pincer complexes active for alkyl-alkyl coupling: ß-H elimination is kinetically accessible but thermodynamically uphilltext::journal::journal article::research article