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Back Cover: N‐Heterocyclic Phosphenium Complex of Manganese: Synthesis and Catalytic Activity in Ammonia Borane Dehydrogenation (Chem. Eur. J. 48/2017)
Author(s) -
Gediga Micheal,
Feil Christoph M.,
Schlindwein Simon H.,
Bender Johannes,
Nieger Martin,
Gudat Dietrich
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201703072
Subject(s) - dehydrogenation , ammonia borane , catalysis , chemistry , ligand (biochemistry) , reactivity (psychology) , manganese , photochemistry , metal , borane , polymer chemistry , medicinal chemistry , organic chemistry , medicine , biochemistry , receptor , alternative medicine , pathology
Subsequent reactions of a neutral phosphenium complex of Mn with H − and H + sources resulted in a stoichiometric H 2 addition to the Mn=P double bond, which can be reversed upon thermal or photochemical excitation. In contrast, in the reaction with NH 3 BH 3 , the same complex acted as dehydrogenation catalyst. DFT studies suggested to explain this transformation as a ligand‐centred process, in which the H + /H − pair is picked up by the phosphenium ligand and the metal is mainly a spectator. Apart from being the first application of a phosphenium complex in catalysis, this discovery adds a new twist to the further development of ligand‐centred reactivity and the use of metal complexes in catalysis. More information can be found in the Full Paper by D. Gudat et al. on page 11560.