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Cationic rhodium tetrafluorobenzobarrelene complexes with diolefin or arene ligands, crystal structures of [Rh(TFB)(arene)] ClO4, (arene = C6Me6, C6H3Me3, C6H4Me2)

1981; Elsevier BV; Volume: 215; Issue: 2 Linguagem: Inglês

10.1016/s0022-328x(00)80134-5

1872-8561

Rafael Usón, Luis A. Oro, C. Foces‐Foces, F. H. Cano, Α. Vegas, Mauricio Valderrama,

Organometallic Complex Synthesis and Catalysis

The preparation and properties of complexes of the general formulae [Rh(TFB)(diolefin)]ClO4, [Rh(TFB)(arene)]ClO4 and [Rh(TFB)L2]ClO4, (TFB = tetrafluorobenzobarrelene, L = dimethylsulfoxide and tetrahydrothiophen) are described. The crystal structures of the arene complexes (arene = C6Me6, C6H3Me3 and C6H4Me2) have been solved by X-ray methods. The three compounds crystallize in quite similar lattices: R3c, a = b = 27.122, 26.233, 25.731 and c = 17.079, 16.388, 16.256 Å, respectively. δR-plots for about 2000 reflections show the agreement in the refinements carried out up to R-values of 5%, 5% and 4% respectively. The Rh atom is coordinated to the double bonds of the TFB and to the arene ring in all three compounds, but the deviation from planarity of the arene and its relative position with respect to the TFB moiety varies.