Synthesis and crystal structure of binuclear BIS-cyclopentadienyl ytterbium n-propyl thiolate [(C5H5)2Yb(μ-SCH2CH2CH3)

Abstract

Reaction of Cp3Yb (Cp = C5H5) with equimolar n-propane thiol in THF at room temperature resulted in the formation of the new complex [Cp2Yb(μ-SCH2CH2CH3)]2 in good yield, which was characterized by elemental analysis and mass spectra, and studies by X-ray crystallography. The title complex crystallized from the saturated THF solution in dimeric form with thiolate ligands as bridging groups. The bridging unit Yb2S2 is planar. The ytterbium atom was coordinated by two Cp groups and two bridged sulfur atoms to form a distorted tetrahedral geometry. The Yb—C(Cp) bond distances range from 2.48(2) to 2.71(2) , averaging 2.60(2) . The Yb—S bond lengths range from 2.69(7) to 2.71(8) , averaging 2.705(8) . Copyright © 1996 Elsevier Science Ltd