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- W2507122023 abstract "Monocationic bis(hydrocarbyl)yttrium complexes [YR2(THF)2][A] (R = CH2SiMe3, CH2C6H4-o-NMe2; A = weakly coordinating anion) underwent hydrogenolysis using dihydrogen or phenylsilane to give a mixture of polynuclear solvent-stabilized dihydride cations [YH2(THF)2]n[A]n. The mixture composition as well as the nuclearity n depended on the starting material, solvent, and reaction conditions. NMR spectroscopic data in solution and X-ray diffraction data suggested that the main product was tetranuclear, although conclusive structural data were not obtained. DFT calculations supported a closo-type tetrahedral [YH2(THF)2]44+ core. The hydridic character of these cations was revealed by their reaction with benzophenone to give the bis(diphenylmethoxy) cation [Y(OCHPh2)2(THF)4][AlR4]. The reaction of this cluster with the (NNNN)-type macrocycle Me4TACD under dihydrogen gave the dinuclear tetrahydride dication with quadruply bridging hydride ligands, [Y2(μ-H)4(Me4TACD)2][A]2, analogous to the previously characterized lutetium derivative. NH-acidic (Me3TACD)H gave the dinuclear dihydride dication [Y2(μ-H)2(Me3TACD)2(THF)2][A]2." @default.
- W2507122023 created "2016-09-16" @default.
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- W2507122023 date "2015-07-17" @default.
- W2507122023 modified "2023-10-01" @default.
- W2507122023 title "Yttrium Dihydride Cation [YH<sub>2</sub>(THF)<sub>2</sub>]<sup>+</sup><sub><i>n</i></sub>: Aggregate Formation and Reaction with (NNNN)-Type Macrocycles" @default.
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- W2507122023 doi "https://doi.org/10.1021/acs.organomet.5b00422" @default.
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