Received 4 January 2008
The title compound, [Yb2(CF3O3S)(C10H15)2(OH)2(C12H12N2)2](C24H20B)·C12H12N2, crystallizes as a half-sandwich complex with a bridging trifluoromethanesulfonate as well as two bridging hydroxide groups. The bound bipyridine ligands have N-C-C-N torsion angles of 13.1 (9) and -12.1 (8)°. The structure also contains an uncoordinated 5,5'-dimethyl-2,2'-bipyridine molecule with an N-C-C-N torsion angle of 169.5 (7)°. The triply bridged Yb centers are 3.5990 (4) Å apart. The Yb-N bond lengths are in the range 2.389 (6)-2.424 (5) Å.
Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: TEXSAN (MSC/Rigaku, 1998); molecular graphics: TEXSAN; software used to prepare material for publication: TEXSAN.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PV2065 ).
This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Chemical Sciences Division, US Department of Energy, under contract No. DE-AC03-76SF0098. I thank Professor Richard A. Andersen (UC Berkeley) and Dr Fred Hollander (CHEXRAY, the UC Berkeley X-ray facility).
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