NOVEL GROUP-4 METAL-RUTHENIUM COMPLEXES - SYNTHESIS, STRUCTURE AND REACTIVITY OF THE FIRST THIOLATO-BRIDGED TITANIUM-RUTHENIUM AND ZIRCONIUM-RUTHENIUM COMPLEXES
K. Fujita et al., NOVEL GROUP-4 METAL-RUTHENIUM COMPLEXES - SYNTHESIS, STRUCTURE AND REACTIVITY OF THE FIRST THIOLATO-BRIDGED TITANIUM-RUTHENIUM AND ZIRCONIUM-RUTHENIUM COMPLEXES, Journal of the Chemical Society. Dalton transactions, (17), 1998, pp. 2907-2913
Complexes [TiCp2(SR)(2)] (R = Ph or Me) reacted with [RuCl(Cp*)(cod)]
(cod = cycloocta-1,5-diene) to afford [Cp2Ti(mu-SR)(2)RuCl(Cp*)] (Cp =
cyclopentadienyl, Cp* = pentamethylcyclopentadienyl; R = Ph la or Me
Ib). X-Ray analysis of la showed that two phenyl groups on the sulfur
atoms are in syn conformation. The complex [Cp2Zr(mu-SMe)(2)RuCl(Cp*)]
1d was also prepared. Complexes la and Ib reacted with KBH(Bu-S)(3) t
o afford hydride complexes [Cp2Ti(mu-SR)(2)RuH(Cp*)] (R = Ph 2a or Me
2b), and with Ag+ in the presence of ligands to afford [Cp2Ti(mu-SR)(2
)Ru(L)Cp*]X-+(-) (R = Ph, L = CO, X = BF4 3a; R = Me, L = CO, X = PF6
3b; R = Ph, L = (BuNC)-N-t, X = BF4 4a; R = Me, L = (BuNC)-N-t, X = PF
6 4b; R = Ph, L = (BuCN)-C-t, X = PF6 5a; R = Me, L = (BuCN)-C-t, X =
PF6 5b; R = Ph, L = MeCN, X = PF6 6a; R = Me, L = MeCN, X = PF6 6b). T
he structures of these cationic complexes were also revealed by X-ray
analysis.