Lanthanide molecular oxohydroxides: Synthesis and characterisation of [Y4(μ4-O)(μ-OEt)2(μ,η2-AAA)2(η2-AAA)3]2(μ3-OH)4(μ3-OEt)2 (HAAA = allylacetatoacetate)

The reaction between Y5O(OPri)13 and allylacetatoacetate or 2-(methacryloyloxy)ethyl acetatoacetate in 1:5 stoichiometry afforded octanuclear oxohydroxo species. Structural characterization was achieved for the allylacetatoacetate derivative homo and copolymerisation reactions with styrene were evaluated for doping of polystyrene. Hydoxo species, Y4(OH)2(AAA)10, where also obtained by reacting Y[N(SiMe3)]3 and HAAA.

The reaction between Y(μ5-O)(-OiPr)13 and allylacetoacetate (1:5 stoichiometry) afforded an octanuclear centrosymmetric cluster Y8(μ4-O)2(μ3-OH)4(μ3-OEt)2 (μ-OEt)4(μ,η2-AAA)4(η2-AAA)6 after ethanolysis and hydrolysis–polycondensation. A similar compound was obtained with 2-(methacryloyloxy)ethyl acetatoacetate homo and copolymerization reactions were evaluated for both compounds.Figure optionsDownload as PowerPoint slide