Low-oxidation state cobalt-magnesium complexes: ion-pairing and reactivity.

ABSTRACT: Magnesium cobaltates (^Arnacnac)MgCo(COD)₂ (1-3) were synthesised by reacting (^Arnacnac)MgI(OEt₂) with K[Co(η⁴-COD)₂] (COD = 1,5-cyclooctadiene) [^Arnacnac = CH(ArNCMe)₂; Ar = 2,4,6-Me₃-C₆H₂ (Mes), 2,6-Et₂-C₆H₃ (Dep), 2,6-iPr₂-C₆H₃Mes (Dipp)]. Compounds 1-3 form contact ion-pairs in toluene, while solvent separated ion-pairs are formed in THF. The effect of ion-pairing on the reactivity is illustrated by reaction of 2 with tert-butylphosphaalkyne, which affords distinct 1,3-diphosphacyclobutadiene complexes. The heteroleptic sandwich complex [(^Depnacnac)MgCo(P₂C₂t</

SUBMITTER: Kelly JA 

PROVIDER: S-EPMC8507399 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature