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By reaction of phosphine functionalized imidazolium salts with nickelocene, a series of cationic 18 VE nickel(II) half‐sandwich complexes were obtained in high yields. Herein the central nickel(II) atoms are coordinated in a chelating fashion by the N‐heterocyclic carbene (NHC) and the phosphine donor sites. The so obtained chelating ring can be opened by cyanide leading to neutral cyanidonickel(II)...
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