2012
DOI: 10.1021/ja208367k
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Co–Ln Mixed-Metal Phosphonate Grids and Cages as Molecular Magnetic Refrigerants

Abstract: The synthesis, structures, and magnetic properties of six families of cobalt-lanthanide mixed-metal phosphonate complexes are reported in this Article. These six families can be divided into two structural types: grids, where the metal centers lie in a single plane, and cages. The grids include [4 × 3] {Co(8)Ln(4)}, [3 × 3] {Co(4)Ln(6)}, and [2 × 2] {Co(4)Ln(2)} families and a [4 × 4] {Co(8)Ln(8)} family where the central 2 × 2 square is rotated with respect to the external square. The cages include {Co(6)Ln(8… Show more

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Cited by 364 publications
(133 citation statements)
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“…To this end, and in the context of exploring new functional materials, phosphonate-based coordination polymers and MOFs have attracted tremendous interest due to their unique structural features and potential applications in various fields, including ion exchange, [6,15] catalysis, [16] adsorption and separation, [16] proton conductivity, [17] water treatment, [15,18] biotechnology, [15,16] photochemistry, [19] dental medicine, [16] cancer treatment, [16] bone disease treatment, [20] magnetism [16,21] and magnetic refrigeration. [22][23][24] It has been proven that the structural variability of metal phosphonates can be increased by the introduction of auxiliary ligands that can coordinate to the metal ions. A number of metal phosphonates exist that are derived from the combination of phosphonates and other ligands.…”
Section: Introductionmentioning
confidence: 99%
“…To this end, and in the context of exploring new functional materials, phosphonate-based coordination polymers and MOFs have attracted tremendous interest due to their unique structural features and potential applications in various fields, including ion exchange, [6,15] catalysis, [16] adsorption and separation, [16] proton conductivity, [17] water treatment, [15,18] biotechnology, [15,16] photochemistry, [19] dental medicine, [16] cancer treatment, [16] bone disease treatment, [20] magnetism [16,21] and magnetic refrigeration. [22][23][24] It has been proven that the structural variability of metal phosphonates can be increased by the introduction of auxiliary ligands that can coordinate to the metal ions. A number of metal phosphonates exist that are derived from the combination of phosphonates and other ligands.…”
Section: Introductionmentioning
confidence: 99%
“…[3] Some of the Ag nanoclusters have been found to exhibit excellent luminescence properties [3c,d] and ultrastability. [3e,f] On the other hand, metal phosphonates vary in structural form from discrete molecules to multidimensional coordination polymers, [4,5] which have potential applications in ion exchange,c atalysis,a nd chemical sensing. [6] Recently we employed tBuPO 3 H 2 as ap recursor to react with AgC CR to construct as eries of high-nuclearity silver-(I)-ethynide cluster compounds, [7] in which the tBuPO 3 2À unit constitutes astructural component for building up the cluster shell, [7a-c] functions as at ripodal strut to support vertexsharing or fusion of two small silver(I) clusters to form an enlarged composite cluster.…”
mentioning
confidence: 99%
“…Studies of the entropy changes from the magnetization data suggest the gadolinium-containing compounds could be suitable for low-temperature magnetic cooling (MCE), In this context, the high magnetization value obtained for compound 1 and the magnetic entropy change was studied to examine whether compound 1 could be used for magnetic cooling applications. The MCE can be described as ΔS = ʃ[ (T,H)/ HdH [49][50][51]. The calculated plot ( Figure 5) gives peak value for a field change ΔH = 70 kG of 3 K of 34.5 J kg -1 K -1 .…”
Section: Starting Materialsmentioning
confidence: 99%
“…Comparatively, few reports are available on the magnetic properties of lanthanide phosphonates prepared under reflux conditions [49][50][51], with the aim of exploring new 4f-phosphonates with interesting structures and magnetic properties, Herein, the synthesis, crystal structure, and magnetic stability of two novel lanthanide aminophosphonate complexes, with formula [Ln10(μ3-OH)3(μ-OH)(CO3)2(O2C t Bu)15(O3PC6H10NH2)3(O3PC6H10NH3)2(H2O)2][Et2NH2] (Ln = Gd(III), 1 and Tb(III), 2), is reported ( Figure 1 and Figure S1) …”
Section: Introductionmentioning
confidence: 99%