Nonanuclear lanthanide(III) nanoclusters: Structure, luminescence and magnetic properties

A series of nonanuclear lanthanide(III) nanoclusters, (CH3)3NH[Ln9(L)16(μ3-OH)8(μ5-O)2](CH3OH) where Ln = Nd, Eu, Tb, Gd, Dy, Er, Yb and HL = (2-hydroxy-5-methylphenyl)propan-1-one, was successfully synthesized and characterized by photoluminescence, magnetic susceptibility and X-ray crystallography. (CH3)3NH[Gd9(L)16(μ3-OH)8(μ5-O)2](CH3OH) crystallized in the monoclinic space group C2/c, with a monovalent anionic cluster and a tertiary ammonium counter ion. Temperature dependent photoluminescence studies of ((CH3)3NH)0.5[Eu9(L)16(μ3-OH)8(μ5-O)2](H2O)5 highlights the presence of two distinct metal centers and temperature dependent magnetic susceptibilities for both ((CH3)3NH)0.5[Dy9(L)16(μ3-OH)8(μ5-O)2](H2O)4 and ((CH3)3NH)0.5[Tb9(L)16(μ3-OH)8(μ5-O)2](H2O)5 suggest weak antiferromagnetic interactions between the lanthanide(III) ions.

A series of nonanuclear lanthanide(III) nanoclusters was successfully synthesized from (2-hydroxy-5-methylphenyl)propan-1-one, and characterized by photoluminescence, magnetic susceptibility and X-ray crystallography.Figure optionsDownload as PowerPoint slide