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Abtract
Two novel coordination complexes containing dimeric rare earth units, {[La2(mpda)3 (H2O)2](H2O)3}n (1) and {[Pr2(mpda)3(H2O)2](H2O)3}n (2) (H2mpda = 5-methylpyridine-2,3-dicarboxylic acid) have been obtained via self-assembly of a novel ligand H2mpda with the corresponding rare earth salts by hydrothermal technique. Single-crystal X-ray diffraction analysis show that 1 and 2 are isostructures and crystallize in the triclinic system with the P-1 space group. Both complexes are built up from two different rare earth dimmers connected by mpda2− ligands via three different coordination modes leading to a two-dimensional (2D) layer.
Additional information
Funding
This work was supported by Zhejiang Provincial Natural Science Foundation of China (No. LY15B060009), The Program for key Science and Technology Team of Zhejiang Province (No. 2013TD17) and National Natural Science Foundation of China (No. 21207117 and 21677132).
