Acta Cryst. (2001). E57, m396-m398  [ doi:10.1107/S160053680101306X ]

A sterically crowded ytterbium(II) thiolate: trans-bis(2,4,6,2'',4'',6''-hexaisopropyl-1,1':3',1''-terphenyl-2'-thiolato-S)tetrakis(tetrahydrofuran-O)ytterbium(II)

M. Niemeyer

Abstract: In the title complex [Yb(SAr*)₂(thf)₄] (Ar* is 2,6-Trip₂C₆H₃, C₃₆H₄₉S, where Trip is 2,4,6-ⁱPr₃C₆H₂; thf is tetrahydrofuran, C₄H₈O), the Yb atom occupies a special position on the inversion center. It shows a slightly distorted trans-octahedral environment formed by the O atoms of four tetrahydrofuran ligands (average Yb-O 2.400  Å) and the S atoms of two thiolate ligands [Yb-S 2.8023  (13)  Å]. The overcrowding caused by the sterically encumbered Ar* ligands is reflected in the large Yb-S-C angle of 151.16  (16)°.

Online 10 August 2001

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