Premium
A Biomimetic Nickel Complex with a Reduced CO 2 Ligand Generated by Formate Deprotonation and Its Behaviour towards CO 2
Author(s) -
Zimmermann Philipp,
Hoof Santina,
BraunCula Beatrice,
Herwig Christian,
Limberg Christian
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.201802655
Subject(s) - formate , deprotonation , nickel , reactivity (psychology) , carbon monoxide , chemistry , ligand (biochemistry) , combinatorial chemistry , catalysis , organic chemistry , ion , medicine , biochemistry , alternative medicine , receptor , pathology
Reduced CO 2 species are key intermediates in a variety of natural and synthetic processes. In the majority of systems, however, they elude isolation or characterisation owing to high reactivity or limited accessibility (heterogeneous systems), and their formulations thus often remain uncertain or are based on calculations only. We herein report on a Ni−CO 2 2− complex that is unique in many ways. While its structural and electronic features help understand the CO 2 ‐bound state in Ni,Fe carbon monoxide dehydrogenases, its reactivity sheds light on how CO 2 can be converted into CO/CO 3 2− by nickel complexes. In addition, the complex was generated by a rare example of formate β‐deprotonation, a mechanistic step relevant to the nickel‐catalysed conversion of H x CO y z − at electrodes and formate oxidation in formate dehydrogenases.