title: Coordination-induced condensation of [Ta6O19](8-): synthesis and structure of [{(C6H6)Ru}2Ta6O19](4-) and [{(C6H6)RuTa6O18}2(μ-O)](10-).
abstract: Reaction of [(C6H6)RuCl2]2 and Na8[Ta6O19] gives two new hybrid organometallic POM complexes, Na10[{(C6H6)RuTa6O18}2(μ-O)]·39.4H2O (Na10-1) and Na4(trans-[{(C6H6)Ru}2Ta6O19]·20H2O (Na4-2). In both cases the half-sandwich fragments {(C6H6)Ru}(2+) are coordinated as additional vertices to the {Ta3(μ2-O)3} triangles of the hexatantalate. According to NMR and ESI-MS data, the dimeric complex [{(C6H6)RuTa6O18}2(μ-O)](10-) dissociates in water with the formation of monomeric [(C6H6)RuTa6O19](6-) species (1a). X-ray structural characterization and aqueous speciation of the complexes by (13)C, (1)H, and DOSY NMR; ESI-MS; and capillary electrophoresis (CE) have been carried out.
authors.affiliation: Nikolaev Institute of Inorganic Chemistry SB RAS , 3, Akad. Lavrentiev Avenue, Novosibirsk 630090, Russia.
authors.forename: P A
authors.initials: PA
authors.lastname: Abramov
authors.forename: M N
authors.initials: MN
authors.lastname: Sokolov
authors.forename: S
authors.initials: S
authors.lastname: Floquet
authors.forename: M
authors.initials: M
authors.lastname: Haouas
authors.forename: F
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authors.lastname: Taulelle
authors.forename: E
authors.initials: E
authors.lastname: Cadot
authors.forename: E V
authors.initials: EV
authors.lastname: Peresypkina
authors.forename: A V
authors.initials: AV
authors.lastname: Virovets
authors.forename: C
authors.initials: C
authors.lastname: Vicent
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authors.lastname: Kompankov
authors.forename: A A
authors.initials: AA
authors.lastname: Zhdanov
authors.forename: O V
authors.initials: OV
authors.lastname: Shuvaeva
authors.forename: V P
authors.initials: VP
authors.lastname: Fedin