title: NMR study on iridium(III) complexes for identifying disulfonate substituted bathophenanthroline regio-isomers.
abstract: A series of novel biscyclometalated iridium (III) complexes with an ancillary disulfonated bathophenanthroline (DSBP(2-)) ligand, Ir(L)(2)DSBPNa, L = 2-phenylpyridine (ppy), 2,4-difluorophenylpyridine (fppy), and 1-phenylisoquinoline (piq) were found to have two isomeric forms. The chemical structures of the isomers were determined by the one- and two-dimensional (1)H and (13)C NMR studies. The isomeric state was proved to have originated from the disulfonate-related regio-isomer of the DSBP(2-) ligand.
authors.forename: Chenchen
authors.initials: C
authors.lastname: Liu
authors.forename: Linpo
authors.initials: L
authors.lastname: Yu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Fang
authors.initials: F
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Zhou
mesh_terms: D002627:Chemistry, Physical; D056831:Coordination Complexes / Q000737:chemistry*; D007495:Iridium / Q000737:chemistry*; D007536:Isomerism; D019906:Nuclear Magnetic Resonance, Biomolecular; D010618:Phenanthrolines / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry; D011804:Quinolines / Q000737:chemistry
chemical_list: D056831:Coordination Complexes; D010618:Phenanthrolines; D011725:Pyridines; D011804:Quinolines; C017049:bathophenanthroline disulfonic acid; D007495:Iridium