Reactivity of Bis(pyridyl)‑<i>N</i>‑alkylaminato Methylpalladium Complexes toward Ethylene: Insights
from Experiment and Theory
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Abstract
A series of novel neutral and cationic
methylpalladium complexes
bearing <i>N</i>-alkyl-2,2′-dipyridylaldiminato ligands
were prepared and characterized. In the presence of ethylene, the
cationic complexes were active as dimerization catalysts, producing
a mixture of 1- and 2-butenes. A Pd–ethyl π-ethylene
species was identified as the catalyst resting state by low-temperature
spectroscopic and DFT studies, which provided insights into the effect
of both steric and electronic factors on the observed reactivity