title: A rare eta2-butadienyl complex from an alkyne double insertion with double vinylidene rearrangement.
abstract: A rare eta2-butadienyl Ir(III) complex with a weak Ir...C bond is formed from 1-alkyne double insertion with the independent double alkyne to vinylidene rearrangement. A reaction intermediate is isolated, and labeling and crossover experiments indicate the intramolecularity of both alkyne to vinylidene rearrangements.
authors.affiliation: Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, USA.
authors.forename: Xingwei
authors.initials: X
authors.lastname: Li
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Incarvito
authors.forename: Robert H
authors.initials: RH
authors.lastname: Crabtree