Oxidative Dinuclear Addition of a Pd~I-Pd~I Moiety to Arenes: Generation of μ-η~3:η~3-Arene-Pd~(III)_2 Species

摘要

We report the oxidative dinuclear addition of a Pd~I-Pd~I bond to arenes. The oxidative dinuclear addition products, which have a bi-π-allyl-type arene dipalladium(II) structure, were obtained from [2.2]paracydophane, anthracene, tetracene, and pentacene. A systematic study of the reaction of [Pd_2(CH_3CN)_6] [BF_4]_2 with benzene and poly-acenes showed that the larger polyacenes, tetracene and pentacene, afforded the oxidative dinuclear addition products, while benzene, naphthalene, and anthracene gave the π-sandwich Pd~I -Pd~I complexes.