The correct assignment of stereochemistry in di-μ-dichlorido-bis{bis[2- (5-benzylsulfonyl)-3-fluoro-2-(pyridin-2-yl)phenyl-κ2 N,C 1]iridium(III)} toluene monosolvate
Articolo
Data di Pubblicazione:
2013
Citazione:
The correct assignment of stereochemistry in di-μ-dichlorido-bis{bis[2- (5-benzylsulfonyl)-3-fluoro-2-(pyridin-2-yl)phenyl-κ2 N,C 1]iridium(III)} toluene monosolvate / E. Mesto, F. Scordari, M. Lacalamita, L. De Cola, R. Ragni, G.M. Farinola. - In: ACTA CRYSTALLOGRAPHICA. SECTION C, CRYSTAL STRUCTURE COMMUNICATIONS. - ISSN 0108-2701. - 69:5(2013), pp. 480-482. [10.1107/S010827011300663X]
Abstract:
The title complex, [Ir2(C18H13FNO 2S)4Cl2]·C7H8, was crystallized from dichloromethane solution under a toluene atmosphere. It is a dimeric complex in which each of the two IrIII centres 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 the trans disposition of the two cyclometalated ligands bound to each IrIII centre, contrary to our previous hypothesis of a cis disposition. The latter was based on the 1H NMR spectra of a series of dimeric benzylsulfonyl-functionalized dichloride-bridged iridium complexes, including the compound described in the present work [Ragni et 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 program PLATON [Spek (2009). Acta Cryst. D65, 148-155].
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
E. Mesto, F. Scordari, M. Lacalamita, L. De Cola, R. Ragni, G.M. Farinola
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