| Summary: | Three new 3D metal–organic frameworks of lanthanum based on mixed anionic ligands, [(La<sub>2</sub>(pQ)<sub>2</sub>(BDC)<sub>4</sub>)·4DMF]<sub>n</sub>, [(La<sub>2</sub>(pQ)<sub>2</sub>(DHBDC)<sub>4</sub>)·4DMF]<sub>n</sub>, [(La<sub>2</sub>(CA)<sub>2</sub>(BDC)<sub>4</sub>)·4DMF]<sub>n</sub> (pQ—dianion of 2,5-dihydroxy-3,6-di-tert-butyl-para-quinone, CA—dianion of chloranilic acid, BDC-1,4-benzenedicarboxylate, DHBDC-2,5-dihydroxy-1,4-benzenedicarboxylate and DMF-N,N′-dimethylformamide), were synthesized using solvothermal methodology. Coordination polymers demonstrate the rare <b>xah</b> or <b>4,6T187</b> topology of a 3D framework. The homoleptic 2D-coordination polymer [(La<sub>2</sub>(pQ)<sub>3</sub>)·4DMF]<sub>n</sub> was obtained as a by-product in the course of synthetic procedure optimization. The thermal stability, spectral characteristics and porosity of coordination polymers were investigated.
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