doi:10.1021/acs.organomet.7b00208engBajo, S.Laidlaw, G.Kennedy, A.R.Sproules, S.Nelson, D.J.Oxidative Addition of Aryl Electrophiles to a Prototypical Nickel(0) Complex: Mechanism and Structure/Reactivity RelationshipsART-2017-105138Detailed kinetic studies of the reaction of a model Ni-0 complex with a range of aryl electrophiles have been conducted. The reactions proceed via a fast ligand exchange pre-equilibrium, followed by oxidative addition to produce either [(NiX)-X-I(dppf)] (and biaryl) or [Ni-II(Ar)X(dppf)]; the ortho substituent of the aryl halide determines selectivity between these possibilities. A reactivity scale is presented in which a range of substrates is quantitatively ranked in order of the rate at which they undergo oxidative addition. The rate of oxidative addition is loosely correlated to conversion in prototypical cross-coupling reactions. Substrates that lead to Ni-I products in kinetic experiments conditions. produce more homocoupling products under catalytic conditions.2017http://zaguan.unizar.es/record/7561610.1021/acs.organomet.7b00208http://zaguan.unizar.es/record/75616oai:zaguan.unizar.es:75616Organometallics 36, 8 (2017), 1662-1672byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess