Heteroleptic Metal-Organic Frameworks of Lanthanides (Lа, Ce, and Ho) Based on Ligands of the Anilate Type and Dicarboxylic Acids

New heteroleptic metal-organic frameworks of lanthanides, units of which contain anionic organic ligands of two types, are prepared by the solvothermal synthesis in N , N -dimethylformamide (DMF). The cross-linked coordination polymer [Ho 2 (CA) 2 (Bdc)·4DMF] ( I ) and two scaffold derivatives [La 2 (pQ) 2 (Bpdc)·4DMF] ( II ) and [Ce 2 (CA)(Bdc) 2 ·4DMF]·2DMF ( III ·2DMF), where CA is chloranilic acid dianion, pQ is 2,5-dihydroxy-3,6-di- tert -butyl- para -benzoquinone dianion, Bdc is terephthalic acid dianion, and Bpdc is 4,4'-biphenyldicarboxylic acid dianion, are synthesized. The structures of compounds I , II , and III ·2DMF are studied by X-ray diffraction (XRD) (CIF file CCDC nos. 2212230, 2212231, and 2212232, respectively).