Catching the First Oligomerization Event in the Catalytic Formation of Polyaminoboranes: H3B center dot NMeHBH2 center dot NMeH2 Bound to Iridium

Johnson HC; Robertson APM; Chaplin AB; Sewell LJ; Thompson AL; Haddow MF; Manners I; Weller AS

Journal of the American Chemical Society, Vol.133, No.29, 11076-11079, 2011

DOI10.1021/ja2040738 Export Citation

Catching the First Oligomerization Event in the Catalytic Formation of Polyaminoboranes: H3B center dot NMeHBH2 center dot NMeH2 Bound to Iridium

Johnson HC, Robertson APM, Chaplin AB, Sewell LJ, Thompson AL, Haddow MF, Manners I, Weller AS

We report the first insertion step at a metal center for the catalytic dehydropolymerization of H3B center dot NMeH2 to form the simplest oligomeric species, H3B center dot NMeHBH2 center dot NMeH2, by the addition of 1 equiv of H3B center dot NMeH2 to [Ir(PCy3)(2)(H)(2)(eta(2)-H3B center dot NMeH2)] [BAr4F] to give [Ir(PCy3)(2)(H)(2)(eta(2)-H3B center dot NMeHBH2 center dot NMeH2)] [BAr4F]. This reaction is also catalytic for the formation of the free linear diborazane, but this is best obtained by an alternative stoichiometric synthesis.