title: Syntheses and properties of phosphine-substituted ruthenium(II) polypyridine complexes with nitrogen oxides.
abstract: Four novel phosphine-substituted ruthenium(ii) polypyridine complexes with nitrogen oxides-trans(P,NO2)-[Ru(trpy)(Pqn)(NO2)]PF6 (trans-NO2), cis(P,NO2)-[Ru(trpy)(Pqn)(NO2)]PF6 (cis-NO2), [Ru(trpy)(dppbz)(NO2)]PF6 (PP-NO2), and cis(P,NO)-[Ru(trpy)(Pqn)(NO)](PF6)3 (cis-NO)-were synthesised (trpy = 2,2':6',2''-terpyridine, Pqn = 8-(diphenylphosphanyl)quinoline, and dppbz = 1,2-bis(diphenylphosphanyl)benzene). The influence of the number and position of the phosphine group(s) on the electronic structure of these complexes was investigated using single-crystal X-ray structural analysis, UV-vis absorption spectroscopy, and electrochemical measurements. The substitution lability of the nitrogen oxide ligand of each complex is discussed in comparison with that of the corresponding acetonitrile complexes.
authors.affiliation: Institute for Molecular Science (IMS), 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan. masaoka@ims.ac.jp.
authors.forename: Go
authors.initials: G
authors.lastname: Nakamura
authors.forename: Mio
authors.initials: M
authors.lastname: Kondo
authors.forename: Meredith
authors.initials: M
authors.lastname: Crisalli
authors.forename: Sze Koon
authors.initials: SK
authors.lastname: Lee
authors.forename: Akane
authors.initials: A
authors.lastname: Shibata
authors.forename: Peter C
authors.initials: PC
authors.lastname: Ford
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Masaoka
mesh_terms: D018360:Crystallography, X-Ray; D015394:Molecular Structure; D009589:Nitrogen Oxides / Q000138:chemical synthesis* / Q000378:metabolism; D010720:Phosphines / Q000138:chemical synthesis* / Q000378:metabolism; D011725:Pyridines / Q000138:chemical synthesis* / Q000378:metabolism; D012428:Ruthenium / Q000737:chemistry* / Q000378:metabolism
chemical_list: D009589:Nitrogen Oxides; D010720:Phosphines; D011725:Pyridines; D012428:Ruthenium; C044646:phosphine