Square Planar Ru( <i> <sup>i</sup> </i> Pr <sub>2</sub> PCH <sub>2</sub> CH <sub>2</sub> NH) <sub>2</sub> and its Role in Fast and Selective Catalytic Amine–Borane Dehydropolymerization to Form High Molecular Weight Polyaminoboranes
Abstract
Abstract Addition of t BuOK to orange RuCl 2 ( i Pr 2 PCH 2 CH 2 NH 2 ) 2 forms the pink, square planar, Ru(II) complex Ru( i Pr 2 PCH 2 CH 2 NH) 2 . This is an active catalyst (ToF 250 s −1 ) for the dehydropolymerization of H 3 B·NMeH 2 to give high molecular weight polyaminoborane, [H 2 BNMeH] n ( M n = 138 700 g mol −1 ) at low loadings (0.03 mol%). An induction period observed is due to the initial formation of a hydroxy‐hydride species, Ru( i Pr 2 PCH 2 CH 2 NH 2 ) 2 (OH)(H), prior to fast turnover.
Article Details
Authors (4)
Mathew J. Cross
Department of Chemistry University of York Heslington York YO10 5DD UK
M. Arif Sajjad
EaStCHEM School of Chemistry
Stuart A. Macgregor
EaStCHEM School of Chemistry
Andrew S. Weller
Department of Chemistry