beryllium; cyclopenta-1,3-diene; cyclopenta-1,3-diene;37048-03-6;Beryllium,2,4-cyclopentadien-1-yl(.mu.5-2,4-cyclopentadien-1-yl)-;Beryllium, 2,4-cyclopentadien-1-yl(mu5-2,4-cyclopentadien-1-yl)-
beryllium; cyclopenta-1,3-diene; cyclopenta-1,3-diene