Abstract
The crystal structures of [Rh(durene)(diolefin)ClO 4 (diolefin tetrafluorobenzobarrelene (TFB) and trimethyltetrafluorobenzobarrelene (Me 3TFB)) have been solved by standard X-ray single crystal methods. The compounds crystallize in the space groups R 3 c for the unmethylated TFB compound and P2 1/ n for the methylated one. The cell dimensions are 25.7586(5), 17.0059(4) Å and 12.6686(6), 11.5565(3), 16.7269(8) Å, β 104.023(5)°, respectively. The refinement was taken to R values of 0.04 and 0.06, respectively. The arene in the TFB derivative has a distorted inverted boat conformation which becomes a skew one in the Me 3TFB compound. These puckering seems to be related to the tendency of rhodium(I) to achieve square-planar coordination.
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