Premium
(Di‐ tert ‐butylphosphanylethyl)cyclopentadienylnickel Chelates with Alkyl, Alkenyl, Aryl, and Alkynyl Ligands: Hints to Cumulenylidene Resonance Forms
Author(s) -
Kohser Stefanie,
Butenschön Holger
Publication year - 2018
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.201701172
Subject(s) - chemistry , alkyl , aryl , nickel , chelation , ferrocene , resonance (particle physics) , nuclear magnetic resonance spectroscopy , polymer chemistry , medicinal chemistry , stereochemistry , organic chemistry , electrochemistry , physics , electrode , particle physics
Cyclopentadienylalkylphosphane chelate complexes have been investigated in depth for many transition matals, but to a much lesser extent for nickel. On the basis of earlier investigations of cyclopentadienylalkylphosphane nickel chelates, a number of new alkyl, aryl, alkenyl, and alkynyl complexes, including some bearing functional groups, were prepared and fully characterized. These include for the first time di‐ and trimetallic complexes as well as compounds with a ferrocene unit as part of the extended π system. A number of quaternized 2‐pyridylethynyl complexes are presented, for which cyclovoltammograms, NMR spectroscopic data, and DFT calculations provide hints to a significant contribution of cumulenylidene resonance forms.