[1,3-Bis(2,3,4,5,6-pentafluorobenzyl)-benzimodazol-2-ylidene] bromido(?4-cyclo-octa-1,5-diene)rhodium(I)

The title complex, [RhBr(C8H12)(C21H8N2F10)], has a slightly distorted pseudo-square-planar geometry. The whole molecule has an approximate mirror symmetry, with the mirror plane passing through the mid-points of the two alkene bonds of the cycloocta-1,5-diene (COD) ligand. The average Rh - C(COD) distance is inversely related to the magnitude of the Rh - C(benzimidazole) distance in this type of compound. The mol-ecules are stacked in columns running along the a axis. The crystal structure contains two types of inter-molecular C - H?F inter-actions, as well as two weak ?-? stacking inter-actions. © International Union of Crystallography 2007