L. N. Bochkarev, V. M. Makarov, L. Zakharov
Mar 22, 1995
Citations
0
Influential Citations
15
Citations
Journal
Journal of Organometallic Chemistry
Abstract
The organogermanium complex of ytterbium [(Ph2Ge)4Yb(THF)4]·4THF (1) was synthesized by the reaction of metallic ytterbium with Ph2GeCl2 in THF at room temperature. X-ray study has shown that the molecule of (Ph2Ge)4Yb(THF)4 is an octahedral Yb complex with the C2 symmetry. The four coordination positions at the Yb atom are occupied by the oxygen atoms of THF molecules and the two cis-positions are occupied by two terminal germanium atoms of the P Ph2GeGePh2GePh2GePh2 fragment. Thus, the (Ph2Ge)4Yb(THF)4 molecule involves the five-membered Ge4Yb metallocycle with a twist conformation. The YbGe and YbO distances are 3.104(2) and 2.475(8), 2.402(10) A.