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Air‐Stable (CAAC)CuCl and (CAAC)CuBH 4 Complexes as Catalysts for the Hydrolytic Dehydrogenation of BH 3 NH 3
Author(s) -
Hu Xingbang,
Soleilhavoup Michèle,
Melaimi Mohand,
Chu Jiaxiang,
Bertrand Guy
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201500224
Subject(s) - dehydrogenation , ammonia borane , catalysis , chemistry , denticity , hydrolysis , alkyl , ligand (biochemistry) , medicinal chemistry , borohydride , ammonia , hydrogen , carbene , inorganic chemistry , organic chemistry , crystal structure , biochemistry , receptor
The first stable copper borohydride complex [(CAAC)CuBH 4 ] [CAAC=cyclic(alkyl)(amino)carbene] bearing a single monodentate ligand was prepared by addition of NaBH 4 or BH 3 NH 3 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 H 2 /BH 3 NH 3 with a turnover frequency of 8400 mol H 2 mol cat −1 h −1 at 25 °C. In a fifteen‐cycle experiment, the catalyst was reused without any loss of efficiency.