The title complex, [Ir2(C18H13FNO2S)4Cl2]·C7H8, was crystallized from dichloromethane solution under a toluene atmosphere. It is a dimeric complex in which each of the two IrIIIcentres is octahedrally coordinated by two bridging chloride ligands and by two chelating cyclometalated 2-(4-benzylsulfonyl-2-fluorophenyl)pyridine ligands. The crystal structure analysis unequivocally establishes thetransdisposition of the two cyclometalated ligands bound to each IrIIIcentre, contrary to our previous hypothesis of acisdisposition. The latter was based on the1H NMR spectra of a series of dimeric benzylsulfonyl-functionalized dichloride-bridged iridium complexes, including the compound described in the present work [Ragniet al.(2009).Chem. Eur. J.15, 136–148]. The toluene solvent molecules, embedded in cavities in the crystal structure, are highly disordered and could not be modelled successfully; their contribution was removed from the refinement using the SQUEEZE routine in the programPLATON[Spek (2009).Acta Cryst.D65, 148–155].
标题复合物 [Ir2(C18H13FNO2S)4Cl2]-C7H8,是在甲苯气氛下从二氯甲烷溶液中结晶出来的。它是一种二聚复合物,其中两个 IrIII 离子中心分别由两个桥接氯配体和两个螯合环甲基化 2-(4-苄基磺酰基-2-氟苯基)吡啶配体八面体配位。晶体结构分析明确地确定了与每个 IrIII 中心结合的两个环甲基配体的位置,这与我们之前提出的相异位置假设相反。后者是基于一系列二聚苄磺酰官能化二氯桥接铱配合物的 1H NMR 光谱,其中包括本研究中描述的化合物[Ragniet al.(2009).Chem. Eur. J.15, 136-148]。嵌入晶体结构空腔中的甲苯溶剂分子具有高度无序性,无法成功建模;利用程序 PLATON 中的 SQUEEZE 例程[Spek (2009).Acta Cryst.D65, 148-155]将其从细化中去除。