X-Ray crystal structure of tetra-acetatobis(tetrathiafulvalene)dirhodium(II) and the properties of its iodine-doped complex
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 12,p. 3059-3062
- https://doi.org/10.1039/dt9880003059
Abstract
A single-crystal X-ray structure analysis of [Rh2(O2CCH3)4(ttf)2](ttf = tetrathiafulvalene) revealed a tetra-acetatodirhodium(II) framework co-ordinated by two ttf molecules each through a sulphur atom. The essentially neutral ttf molecule assumes a boat conformation in which the four terminal carbon atoms deviate greatly from the central C2S4 plane. In the crystal phase the ttf molecules weakly interact with one another to form a two-dimensional network through sulphur–sulphur contacts. The complex crystallizes in the monoclinic system, space group P21/n with unit-cell dimensions a= 12.496(3), b= 14.413(3), c= 8.296(2)Å, β= 104.27(2)°, and Z= 2. The structure was solved by a standard heavy-atom method and refined, on the basis of 1 734 [|Fo| > 3σ(F)] observed data, to an R value of 0.082. The complex was doped with iodine to afford [Rh2(O2CCH3)4(ttf)2]·l3 which contains neutral ttf and the ttf˙+ radical cation and exhibits a conductivity of 2.0 × 10–7 S cm–1 at 25 °C for a compacted pellet.Keywords
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