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Reversible Hydrogen Activation by a Pyridonate Borane Complex: Combining Frustrated Lewis Pair Reactivity with Boron‐Ligand Cooperation
Author(s) -
Gellrich Urs
Publication year - 2018
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.201713119
Subject(s) - frustrated lewis pair , borane , reactivity (psychology) , boron , boranes , ammonia borane , ligand (biochemistry) , chemistry , hydrogen , lewis acids and bases , materials science , hydrogen production , catalysis , organic chemistry , medicine , biochemistry , alternative medicine , receptor , pathology
A pyridone borane complex that liberates dihydrogen under mild conditions is described. The reverse reaction, dihydrogen activation by the formed pyridonate borane complex, is achieved under moderate H 2 pressure (2 bar) at room temperature. DFT and DLPNO‐CCSD(T) computations reveal that the active form of the pyridonate borane complex is a boroxypyridine that can be described as a single component frustrated Lewis pair (FLP). Significantly, the boroxypyridine undergoes a chemical transformation to a neutral pyridone donor ligand in the course of the hydrogen activation. This unprecedented mode of action may thus, in analogy to metal‐ligand cooperation, be regarded as an example of boron‐ligand cooperation.