Synthesis and crystal structure of two lanthanide complexes with benzenecarboxylic derivatives

Two novel lanthanide coordination polymers, [La(tpaa)(3)(H2O)(2)] (1) and [Eu-2(BDC)(3)(DMF)(2)(H2O)(2)] (2) (Htpaa = terephthalamic acid, H2BDC 1,4-benzenedicarboxylic acid, DMF = N,N-dimethylformamide), were hydro(solvo)thermally synthesized by reactions of the corresponding lanthanide nitrate salts with 1,3,5-triazine-2,4,6-tri(4-benzenecarboxylate) (L), in which a simultaneous hydrolysis of the ligand L occurred. Single-crystal X-ray analysis revealed that complex 1 comprises one-dimensional chains that are further interlinked via hydrogen bonds, resulting in a two-dimensional network; while complex 2 is a three-dimensional interpenetrated coordination architecture.