title: Primary photophysical and photochemical processes for hexachloroosmate(iv) in aqueous solution.
abstract: The photoaquation of the OsIVCl62-complex was studied by means of stationary photolysis, nanosecond laser flash photolysis and ultrafast kinetic spectroscopy. The OsIVCl5(OH)2-complex was found to be the only reaction product. The quantum yield of photoaquation is rather low and wavelength-dependent. No impact of redox processes on photoaquation was revealed. The total characteristic lifetime of the process is about 80 ps. Three intermediates were recorded in the femto- and picosecond time domains and assigned to different Os(iv) species. The nature of intermediates and possible mechanisms of photoaquation are discussed.
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru and Novosibirsk State University, 2 Pirogova Str., 630090, Novosibirsk, Russian Federation.
authors.forename: Evgeni M
authors.identifier: 0000-0003-2683-4954
authors.initials: EM
authors.lastname: Glebov
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru and Novosibirsk State University, 2 Pirogova Str., 630090, Novosibirsk, Russian Federation.
authors.forename: Ivan P
authors.initials: IP
authors.lastname: Pozdnyakov
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru.
authors.forename: Svetlana G
authors.initials: SG
authors.lastname: Matveeva
authors.affiliation: Institute of Spectroscopy, Russian Academy of Sciences, 5 Fizicheskaya Str., 119333 Troitsk, Moscow, Russian Federation. melnikov@isan.troitsk.ru.
authors.forename: Alexei A
authors.initials: AA
authors.lastname: Melnikov
authors.affiliation: Institute of Spectroscopy, Russian Academy of Sciences, 5 Fizicheskaya Str., 119333 Troitsk, Moscow, Russian Federation. melnikov@isan.troitsk.ru.
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Chekalin
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru and Vologograd State University, 100 University Ave., 400062, Volgograd, Russian Federation. rogozina@volsu.ru.
authors.forename: Marina V
authors.initials: MV
authors.lastname: Rogozina
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru and Vologograd State University, 100 University Ave., 400062, Volgograd, Russian Federation. rogozina@volsu.ru.
authors.forename: Vladislav V
authors.initials: VV
authors.lastname: Yudanov
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru.
authors.forename: Vjacheslav P
authors.initials: VP
authors.lastname: Grivin
authors.affiliation: Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru and Novosibirsk State University, 2 Pirogova Str., 630090, Novosibirsk, Russian Federation.
authors.forename: Victor F
authors.initials: VF
authors.lastname: Plyusnin
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D007700:Kinetics; D007834:Lasers; D009992:Osmium / Q000737:chemistry*; D010084:Oxidation-Reduction; D010782:Photolysis / Q000528:radiation effects; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D014867:Water; D009992:Osmium