Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 12 (December 2002)

Acta Cryst. (2002). C58, m601-m604 [doi:10.1107/S0108270102020036]

Solvent-metal interactions in bis[1,2-dicarba-closo-dodecaboran(12)-1-yl]mercury(II) dichloromethane solvate and bis[1,12-dicarba-closo-dodecaboran(12)-1-yl]mercury(II) tetrahydrofuran solvate

P. Morel, P. Schaffer, J. F. Britten and J. F. Valliant

Abstract: The title compounds, bis[1,2-dicarba-closo-dodecaboran(12)-1-yl]mercury(II) dichloromethane solvate, [Hg(C₂B₁₀H₁₁)₂]·CH₂Cl₂, (I), and bis[1,12-dicarba-closo-dodecaboran(12)-1-yl]mercury(II) tetrahydrofuran solvate, [Hg(C₂B₁₀H₁₁)₂]·C₄H₈O, (II), were prepared in excellent yields using a robust synthetic procedure involving the reaction of HgCl₂ with the appropriate monolithiocarborane. X-Ray analysis of the products revealed strong interactions between the Hg atoms in both complexes and the respective lattice solvent. The distances between the Hg^II centers and the Cl atoms of the dichloromethane solvent molecule in the ortho-carborane derivative, (I), and the O atom of the tetrahydrofuran molecule in the para-carborane complex, (II), are shorter than the sums of the van der Waals radii for Hg and Cl (3.53 Å), and Hg and O (3.13 Å), respectively, indicating moderately strong interactions. There are two crystallographically independent molecules in the asymmetric unit of both compounds, which, in each case, are related by differing relative positions of the cages.

Formula: [Hg(C₂B₁₀H₁₁)₂]·CH₂Cl₂ and [Hg(C₂B₁₀H₁₁)₂]·C₄H₈O

Online 26 November 2002


	Structure factor file (CIF format) (929.2 kbytes) Contains datablock I

	Structure factor file (CIF format) (511.8 kbytes) Contains datablock II

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