Abstract
Blue moisture sensitive single crystals of [YbCl2(THF)5]+[WOCl4(THF)]- were obtained as a by-product from the reaction of the ytterbium trisamide Yb[N(SiMe3)2]3 with tungsten hexachloride in THF solution. The crystals were suitable for an X-ray crystal structure determination. Space group P2/c, Z = 2, lattice dimensions at -80 °C: a = 1192.5(1), b = 1117.1(1), c = 1349.9(1) pm, ß = 104.115(7)°, R = 0.0424. The structure consists of cations [YbCl2(THF)5]+ in which the ytterbium atom is coordinated in a pentagonalbipyramidal way by the chlorine atoms in the axial positions and by the oxygen atoms of the THF molecules in equatorial positions. Counterions are the well-known [WOCl4(THF)]- ions.
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