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Phosphine Functionalized NHC Ligands and Their Cyclopentadienide Nickel(II) Complexes
Author(s) -
Trampert Jens,
Nagel Marcel,
Grimm Tobias,
Sun Yu,
Thiel Werner R.
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800151
Subject(s) - phosphine , nickel , chelation , chemistry , carbene , cationic polymerization , cyanide , polymer chemistry , medicinal chemistry , ring (chemistry) , catalysis , organic chemistry
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) NHC complexes. Application of imidazolium salts functionalized with thiophosphine groups prevents the formation of chelate complexes. Instead neutral chloridonickel(II) NHC species are obtained.