C20H20Zr
Gerhard ErkerGereon DierkerRoland FrohlichStefan GrimmeGerald Kehr
Chemical Communications (2006) 37
a=14.261(1)Å b=6.462(1)Å c=17.607(1)Å
α=90.00° β=90.00° γ=90.00°
C20H20Hf
a=8.815(1)Å b=14.432(1)Å c=12.700(1)Å