Acta Cryst. (2007). E63, m2581  [ doi:10.1107/S1600536807045187 ]

Cubic di--amido-bis[bis(⁵-cyclopentadienyl)ytterbium(III)]

M. Zeuner and W. Schnick

Abstract: The title compound, [Yb₂(C₅H₅)₄(NH₂)₂], was synthesized in a Parr high-pressure vessel starting from monoclinic [Cp₂YbNH₂]₂ (where Cp = cyclopentadienyl). The complex is located on a special position of site symmetry mmm with just an eighth of the complex in the asymmetric unit. The Yb atom is in a distorted tetrahedral coordination environment, coordinated by two cyclopentadienyl rings and two amino groups forming a dimeric complex bridged through the amino groups. This compound represents the high-pressure cubic modification of monoclinic [Cp₂YbNH₂]₂ obtained at 250 bar (1 bar = 10⁵ Pa) under an atmosphere of argon.

Online 21 September 2007

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