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- W2086142959 abstract "Titanium dioxide (TiO2) doped with transition-metal ions (M) has potentially broad applications in photocatalysis, photovoltaics, and photosensors. One approach to these materials is through controlled hydrolysis of well-defined transition-metal titanium oxo cage compounds. However, to date very few such cages have been unequivocally characterized, a situation which we have sought to address here with the development of a simple synthetic approach which allows the incorporation of a range of metal ions into titanium oxo cage arrangements. The solvothermal reactions of Ti(OEt)4 with transition-metal dichlorides (MIICl2, M = Co, Zn, Fe, Cu) give the heterometallic transition-metal titanium oxo cages [Ti4O(OEt)15(MCl)] [M = Co (2), Zn (3), Fe (4), Cu (5)], having similar MTi4(μ4-O) structural arrangements involving ion pairing of [Ti4O(OEt)15]− anion units with MCl+ fragments. In the case of the reaction of MnCl2, however, two MnII ions are incorporated into this framework, giving the hexanuclear Mn2Ti4(μ4-O) cage [Ti4O(OEt)15(Mn2Cl3)] (6) in which the MCl+ fragments in 2−5 are replaced by a [ClMn(μ-Cl)MnCl]+ unit. Emphasizing that the nature of the heterometallic cage is dependent on the metal ion (M) present, the reaction of Ti(OEt)4 with NiCl2 gives [Ti2(OEt)9(NiCl)]2 (7), which has a dimeric Ni(μ-Cl)2Ni bridged arrangement arising from the association of [Ti2(OEt)9]− ions with NiCl+ units. The syntheses, solid-state structures, spectroscopic and magnetic properties of 2−7 are presented, a first step toward their applications as precursor materials." @default.
- W2086142959 created "2016-06-24" @default.
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- W2086142959 date "2010-11-18" @default.
- W2086142959 modified "2023-10-06" @default.
- W2086142959 title "Single-Source Materials for Metal-Doped Titanium Oxide: Syntheses, Structures, and Properties of a Series of Heterometallic Transition-Metal Titanium Oxo Cages" @default.
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- W2086142959 doi "https://doi.org/10.1021/ic101687m" @default.
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