A New Synthetic Route to Di-η 5 -Cyclopentadienyl Ytterbium（II）Tetrafuranate （η 5 -C 5 H 5 ） 2 Yb（THF） 2 and Its Crystal Structure

In recent years,the organometallic ehemistry of the lanthanide metals in low oxidation states has beenactively investigated.The synthesis of the low一valent lanthanide eomPlexes has the signifieant meanings ontheory and praeti