Ligand Substitution and Electronic Structure Studies of Bis(phosphine)Cobalt Cyclooctadiene Precatalysts for Alkene Hydrogenation.

ABSTRACT: Diene self-exchange reactions of the 17-electron, formally cobalt(0) cyclooctadienyl precatalyst, (R,R)-(^iPrDuPhos)Co(COD) (P ₂ CoCOD, (R,R)-^iPrDuPhos = 1,2-bis((2R,5R)-2,5-diisopropylphospholano)benzene, COD = 1,5-cyclooctadiene) were studied using natural abundance and deuterated 1,5-cyclooctadiene. Exchange of free and coordinated diene was observed at ambient temperature in benzene-d ₆ solution and kinetic studies support a dissociative process. Both neutral P ₂ CoCOD and the 16-electron, cationic cobalt(I) complex, [(R,R)-(^iPrDuPhos)Co(COD)][BAr^F ₄] (BAr^F ₄ = B[(3,5-(CF

SUBMITTER: Zhong H 

PROVIDER: S-EPMC8317443 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature