title: The useful properties of H2O as a ligand of a hydrogenase mimic.
abstract: This paper investigates the required properties of Ru-coordinated ligands of a Ni-Ru based hydrogenase mimic. A series of ligands, including MeCN, pyridine, H(2)O and OH(-) were coordinated to Ru, with H(2)O being the only ligand to promote H(2)-activation. In addition, a tethered pyridyl moiety was synthesised and found to completely inhibit H(2)-activation. We conclude, therefore, that H(2)O is the ideal ligand for this mimic as a result of both its mild basicity and the availability of two lone pairs for simultaneous binding to Ru and H(2).
authors.affiliation: Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Chunbai
authors.initials: C
authors.lastname: Zheng
authors.forename: Kyoungmok
authors.initials: K
authors.lastname: Kim
authors.forename: Takahiro
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Seiji
authors.initials: S
authors.lastname: Ogo
mesh_terms: D006859:Hydrogen / Q000737:chemistry; D006864:Hydrogenase / Q000737:chemistry* / Q000378:metabolism; D008024:Ligands; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry* / Q000378:metabolism; D012428:Ruthenium / Q000737:chemistry; D013237:Stereoisomerism; D014867:Water / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D014867:Water; D009532:Nickel; D012428:Ruthenium; D006859:Hydrogen; D006864:Hydrogenase