title: Heterometallic Ti(IV)-Ru(II) and Ti(IV)-Re(I) sulfato complexes containing the Kläui tripodal ligand [(eta5-C5H5)Co{P(O)(OEt)2}3]-.
abstract: Treatment of [(L(OEt))(2)Ti(2)(mu-O)(2)(mu-SO(4))] (L(OEt)(-) = [(eta(5)-C(5)H(5))Co{P(O)(OEt)(2)}(3)](-)) with [Ru(H)(Cl)(CO)(PPh(3))(3)] and Ag(OTf) (OTf(-) = triflate) in the presence of Na(2)CO(3) gave the Ti(IV)-Ru(II) complex [(L(OEt))(2)Ti(2)(mu-O)(3)(mu(3)-SO(4))Ru(CO)(PPh(3))(2)] (2) whereas that with [Re(CO)(5)(OTf)] afforded the Ti(IV)-Re(I) complex [H(L(OEt))(2)Ti(2)(mu-O)(3)(mu-SO(4))Re(CO)(3)(H(2)O)] (3). The crystal structures of complexes 2.HOTf and [3.2/3(Et(3)NHOTf).5/12(H(2)O)](3) have been determined. Complex 2 consists of an adamantane-like Ti(2)RuSO(6) core, in which the {Ru(II)(PPh(3))(2)(CO)} moiety is facially coordinated to a tridentate-O,O',O''(sulfate) [(L(OEt))(2)Ti(2)(mu-O)(3)(mu(3)-SO(4))](2-) metalloligand. The anion [(L(OEt))(2)Ti(2)(mu-O)(3)(mu-SO(4))Re(CO)(3)(H(2)O)](-) in 3 can be viewed as consisting of a fac-{Re(I)(CO)(3)} fragment coordinated with one aqua ligand and a bidentate-O,O'-[(L(OEt))(2)Ti(2)(mu-O)(3)(mu-SO(4))](2-) metalloligand.
authors.affiliation: Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. xyyi@ust.hk
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Yi
authors.forename: Herman H Y
authors.initials: HH
authors.lastname: Sung
authors.forename: Qian-Feng
authors.initials: QF
authors.lastname: Zhang
authors.forename: Ian D
authors.initials: ID
authors.lastname: Williams
authors.forename: Wa-Hung
authors.initials: WH
authors.lastname: Leung