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