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Title: A Dinuclear Cobalt Complex Featuring Unprecedented Anodic and Cathodic Redox Switches for Single-Molecule Magnet Activity
Authors: Fortier, Skye ×
Le Roy, Jennifer J
Chen, Chun-Hsing
Vieru, Veaceslav
Murugesu, Muralee
Chibotaru, Liviu
Mindiola, Daniel J
Caulton, Kenneth G #
Issue Date: Aug-2013
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:135 issue:39 pages:14670-14678
Abstract: One-electron oxidation or reduction of the paramagnetic dinuclear
Co(II) complex dmp2Nin{Co[N(SiMe3)2]}2 (1; dmp2
Nin2− = bis(2,6-
dimethylphenyl)nindigo), by fully reversible chemical or electrochemical methods,
generates the radical salts [1(OEt2)]+ and [1]−, respectively. Full structural and
magnetic analyses reveal the locus of the redox changes to be nindigo-based, thus giving
rise to ligand-centered radicals sandwiched between two paramagnetic and lowcoordinate
Co(II) centers. The presence of these sandwiched radicals mediates
magnetic coupling between the high-spin (S = 3/2) cobalt ions, which gives rise to
single-molecule magnet (SMM) activity in both the oxidized ([1(OEt2)]+) and reduced
([1]−) states. This feature represents the first example of a SMM exhibiting fully
reversible, dual “ON/OFF” switchability in both the cathodic and anodic states.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantum Chemistry and Physical Chemistry Section
× corresponding author
# (joint) last author

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