C. Janiak
Nov 1, 2010
Citations
0
Influential Citations
6
Citations
Journal
Zeitschrift für anorganische und allgemeine Chemie
Abstract
Transmetalation of the lanthanide metals samarium and ytterbium with bis(cyclopentadienyl)tin(II), stannocene, (η5-C5H5)2Sn as cyclopentadienyl transfer agent yields the tris(cyclopentadienyl)lanthanides (η5-C5H5)3Ln (in toluene), (η5-C5H5)3Ln·THF (Ln = Sm, Yb) and bis(cyclopentadienyl)ytterbium, (η5-C5H5)2Yb·THF in a direct, facile, high-yield and halide-free route. In toluene the base-free forms (η5-C5H5)3Ln are isolated directly. In THF the adducts (η5-C5H5)3Ln·THF are obtained in crystalline form. At a 1:1 molar ratio of Yb:Sn the ytterbium metal reduces the initially formed (η5-C5H5)3Yb·THF to (η5-C5H5)2Yb·THF.