Diaquatetrakis(pyridine-2,6-dicarboxylato-kappa2O2,O6)tetrakis(micro-pyridine-3,5-dicarboxylic acid-kappa2N:O)tetracopper(II): a copper complex with tetrameric molecular units.

Crystals of the title tetramer, [Cu4(C7H3NO4)4-(C7H5NO4)4(H2O)2], were synthesized hydrothermally at 433 K. The triclinic structure consists of tetrameric molecular species, which interact via strong hydrogen bonds. The Cu(II) ions are distributed equally between one square-pyramidal site and one octahedral site distorted by the Jahn-Teller effect.

VIII(OH)[O2C-C6H4-CO2].(HO2C-C6H4-CO2H)x(DMF)y(H2O)z(or MIL-68), a new vanadocarboxylate with a large pore hybrid topology: reticular synthesis with infinite inorganic building blocks?

V(III)(OH)[O(2)C-C(6)H(4)-CO(2)].(HO(2)C-C(6)H(4)-O(2)H)(x)(DMF)(y)(H(2)O)(z) or MIL-68 was solvothermally synthesised in a non-aqueous medium. Its structure, built up from octahedral chains connected by terephthalate linkers, exhibits large hexagonal channels containing different occluded moieties.

Synthesis, structure, and magnetic properties of two new vanadocarboxylates with three-dimensional hybrid frameworks.

(V(III)(OH))(2)[C(6)H(2)(CO(2))(4)].4H(2)O (labeled MIL-60) and V(III)(OH)[(2)(O(2)C)C(6)H(2)(COOH)(2)].H(2)O (labeled MIL-61) were hydrothermally synthesized from mixtures of VCl(3), 1,2,4,5-benzenetetracarboxylic acid, and water heated for 3 days at 473 K.