title: Air-Stable (CAAC)CuCl and (CAAC)CuBH4 Complexes as Catalysts for the Hydrolytic Dehydrogenation of BH3NH3.
abstract: The first stable copper borohydride complex [(CAAC)CuBH4] [CAAC = cyclic(alkyl)(amino)carbene] bearing a single monodentate ligand was prepared by addition of NaBH4 or BH3NH3 to the corresponding [(CAAC)CuCl] complex. Both complexes are air-stable and promote the catalytic hydrolytic dehydrogenation of ammonia borane. The amount of hydrogen released reaches 2.8 H2/BH3 NH3 with a turnover frequency of 8400 mol H2 molcat(-1) h(-1) at 25 °C. In a fifteen-cycle experiment, the catalyst was reused without any loss of efficiency.
authors: UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0343 (USA); School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (P.R. China).
authors: Xingbang
authors: X
authors: Hu
authors: Michèle
authors: M
authors: Soleilhavoup
authors: Mohand
authors: M
authors: Melaimi
authors: Jiaxiang
authors: J
authors: Chu
authors: Guy
authors: G
authors: Bertrand
keywords: boranes; carbenes; copper; hydrides; structure elucidation