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Evidence for Non‐Innocence of a β‐Diketonate Ligand
Author(s) -
Vinum Morten Gotthold,
Voigt Laura,
Bell Colby,
Mihrin Dmytro,
Larsen René Wugt,
Clark Kensha Marie,
Pedersen Kasper S.
Publication year - 2020
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.201904899
Subject(s) - reactivity (psychology) , ligand (biochemistry) , denticity , chemistry , metal , redox , crystallography , inorganic chemistry , photochemistry , computational chemistry , organic chemistry , medicine , biochemistry , receptor , alternative medicine , pathology
β‐Diketonates, such as acetylacetonate, are amongst the most common bidentate ligands towards elements across the entire periodic table and are considered wholly redox‐inactive in their complexes. Herein we show that complexation of 1,1,1,5,5,5‐hexafluoroacetylacetonate (hfac − ) to Cr II spontaneously affords Cr III and a reduced β‐diketonate radical ligand scaffold, as evidenced by crystallographic analysis, magnetic measurements, optical spectroscopy, reactivity studies, and DFT calculations. The possibility of harnessing β‐diketonates as electron reservoirs opens up possibilities for new metal–ligand concerted reactivity in the ubiquitous β‐diketonate coordination chemistry.