A series of lanthanide-organic frameworks constructed by 2-methyl imidazole dicarboxylate and oxalate: synthesis,structures, and properties |
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| Abstract: | Five lanthanide(III) coordination polymers with 2-methyl-1H-imidazole-4,5-dicarboxylic acid (H3MIDC) and ammonium oxalate, {(Ln1)2(HMIDC)2(C2O4)(H2O)3]?·?3H2O} n (Ln1?=?Nd (1), Sm (2)), {Eu2(HMIDC)2(C2O4)(H2O)3]?·?0.5EtOH?·?3H2O} n (3), {Ce2(HMIDC)2(C2O4)(H2O)3]?·?EtOH?·?3H2O} n (4), and {Gd2(HMIDC)2(C2O4)(H2O)3]?·?MeOH?·?3H2O} n (5), have been prepared and structurally characterized. Single-crystal X-ray diffraction analyses reveal that 1 and 2 are isostructural, as are 3, 4, and 5. Each exhibits a 3-D open framework, which is built by a regular 2-D grid connected by HMIDC2? and Ln(III). The luminescence and thermal properties of these complexes have been investigated as well. |
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| Keywords: | Coordination polymer Lanthanide Imidazole dicarboxylate Crystal structure Properties |
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