Diverse reactivity of a tricoordinate organoboron L₂PhB: (L = oxazol-2-ylidene) towards alkali metal, group 9 metal, and coinage metal precursors.

ABSTRACT: The reactivity of a tricoordinate organoboron L₂PhB: (L = oxazol-2-ylidene) 1 towards metal precursors and its coordination chemistry were comprehensively studied. While the boron center in 1 is reluctant to coordinate to the alkali metals in their trifluoromethanesulfonate salts (MOTf) (M = Li, Na, K), the unprecedented compound 2 containing two L₂PhB: units linked by a cyclic Li(OTf)₂Li spacer was obtained from the reaction of 1 with LiOTf. Treatment of 1 with group 9 metal complexes [MCl(COD)]₂ (M = Rh, Ir) afforded the first zwitterionic rhodium(i)-boronium complex 3 and the iridium(iii)-borane complex 4, respectively. The reaction pathway may involve C-H activation followed by proton migration

SUBMITTER: Kong L 

PROVIDER: S-EPMC5655907 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature