SEARCH Articles Figures Tables Metallacycles metallacyclopentadiene Metallacyclopentadiene Metallacyclopentadiene Metallacyclopentadiene complexes Metallacyclopentadiene complexes from alkynes Metallacyclopentadienes benzene synthesis Metallacyclopentadienes reactions with alkynes Metallacyclopentanes, Metallacyclopentenes, and Metallacyclopentadienes