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Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol‐2‐ylidene Ligands
Author(s) -
Werner Irina,
Kohser Stefanie,
Butenschön Holger
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000326
Subject(s) - chemistry , carbene , deprotonation , chelation , cationic polymerization , stoichiometry , medicinal chemistry , polymer chemistry , ion , stereochemistry , organic chemistry , catalysis
Treatment of cyclopentadienylnickel chloro or bromo chelates bearing either a tertiary 2‐(di‐ tert ‐butyl)phosphanylethyl or a secondary 2‐(2,4,6‐trimethylphenyl)phosphanylethyl tether with imidazolylidene (Arduengo carbene) ligands results in cationic or electroneutral carbene complexes with either a decoordinated or a chelated tether. The outcome depends on the nature of the carbene, the counter anion, and the reactant stoichiometry. The results are the basis of ongoing investigations directed towards a deprotonation of the chelated cationic complexes with a secondary phosphorus atom.