SEARCH Articles Figures Tables Cycloadditions metallacyclopentane Metallacycles metallacyclopentane Metallacyclopentane complexes Metallacyclopentane intermediates Metallacyclopentanes Metallacyclopentanes Metallacyclopentanes, Metallacyclopentenes, and Metallacyclopentadienes Nickel complexes metallacyclopentanes Substituted metallacyclopentanes