Acta Cryst. (2010). E66, m22  [ doi:10.1107/S1600536809051903 ]

An orthorhombic polymorph of 1-[(ferrocenyl)(hydroxy)methyl]-1,2-dicarba-closo-dodecaborane

H. Chen, J. Miao, P. Zhu, D. Wang and Y. Nie

Abstract: An orthorhombic polymorph of the title compound, [Fe(C₅H₅)(C₈H₁₇B₁₀O)] or C₁₃H₂₂B₁₀FeO, is described here in addition to the known monoclinic polymorph [Crundwell et al. (1999). Acta Cryst. C55, IUC9900087]. The asymmetric unit contains four independent molecules with C_cage-C_cage distances of 1.636 (16)-1.700 (16) Å, and with the methylhydroxy groups disordered over two positions in each molecule [occupancy ratios 0.80 (2):0.20 (2), 0.59 (3):0.41 (3), 0.60 (2):0.40 (2) and 0.793 (17):0.207 (17)].

Online 9 December 2009

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