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One‐Electron Reduction of Acenaphthene‐1,2‐Diimine Nickel(II) Complexes
Author(s) -
Khrizanforova Vera V.,
Fayzullin Robert R.,
Morozov Vladimir I.,
Gilmutdinov Ildar F.,
Lukoyanov Anton N.,
Kataeva Olga N.,
Gerasimova Tatiana P.,
Katsyuba Sergey A.,
Fedushkin Igor L.,
Lyssenko Konstantin A.,
Budnikova Yulia H.
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900677
Subject(s) - acenaphthene , nickel , chemistry , comproportionation , electron paramagnetic resonance , diimine , cyclic voltammetry , unpaired electron , dimer , photochemistry , dication , hexacoordinate , redox , inorganic chemistry , ligand (biochemistry) , crystallography , electrochemistry , molecule , organic chemistry , physics , electrode , nuclear magnetic resonance , silicon , anthracene , catalysis , biochemistry , receptor
New nickel‐based complexes of 1,2‐bis[(2,6‐diisopropylphenyl)imino]acenaphthene (dpp‐bian) with BF 4 − counterion or halide co‐ligands were synthesized in THF and MeCN. The nickel(I) complexes were obtained by using two approaches: 1) electrochemical reduction of the corresponding nickel(II) precursors; and 2) a chemical comproportionation reaction. The structural features and redox properties of these complexes were investigated by using single‐crystal X‐ray diffraction (XRD), cyclic voltammetry (CV), and electron paramagnetic resonance (EPR) and UV/Vis spectroscopy. The influence of temperature and solvent on the structure of the nickel(I) complexes was studied in detail, and an uncommon reversible solvent‐induced monomer/dimer transformation was observed. In the case of the fluoride complex, the unpaired electron was found to be localized on the dpp‐bian ligand, whereas all of the other nickel complexes contained neutral dpp‐bian moieties.