The first example of photochemical reduction of nitrite into nitrogen monoxide by a dinuclear Ru(II)-Cu(II) complex and photoinduced intramolecular electron transfer reaction between Ru(II) and Cu(II) moieties.
The photochemical reduction of nitrite to NO by the dinuclear Ru(II)-Cu(II) complex ([Ru(bpy)(2)(Mebpy-COOC(3)H(6))Me(2)bpaCu(H(2)O)(ClO(4))](ClO(4)).(PF(6))(2).(H(2)O) was observed in the absence of sacrificial electron donor reagents in CH(2)Cl(2). The reaction rate of the photoreduction of nitrite depended upon the concentration of the excited Ru(II) moiety in the complex. The photoinduced intramolecular electron transfer rate constants between the Ru(II) and Cu(II) moieties (*Ru(II)-Cu(II) --> Ru(III)-Cu(I) and Ru(III)-Cu(I) --> Ru(II)-Cu(II)) in the dinuclear complex were calculated to be 2.3 x 10(9) and 8.3 x 10(7) s(-1), respectively, by laser flash photolysis.
Isoda
Naoko
N
Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
Torii
Yuki
Y
Okada
Tomoko
T
Misoo
Makoto
M
Yokoyama
Hiroshi
H
Ikeda
Noriaki
N
Nojiri
Masaki
M
Suzuki
Shinnichiro
S
Yamaguchi
Kazuya
K
D003300:Copper / Q000737:chemistry*; D004583:Electrons; D007700:Kinetics; D008024:Ligands; D009569:Nitric Oxide / Q000138:chemical synthesis*; D009573:Nitrites / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D010782:Photolysis; D012428:Ruthenium / Q000737:chemistry*
D008024:Ligands; D009573:Nitrites; D009569:Nitric Oxide; D003300:Copper; D012428:Ruthenium