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The new three-dimensional open-framework cobalt(II) molybdenum(VI) phosphate, (C2H9N2)4(C2H10N2)[Co3Mo4P4O28] 1, has been prepared by the reaction of sodium molybdate, phosphoric acid and ethylenediamine with Co2+ salts. The crystal data for 1 are as follows: Tetragonal, space group I4(1)/a, a=17.088(2) A˚, c=10.745(2) A˚ V=3137.7(9) A˚3, Z=4. The structure of 1 is constructed from CoMo2P tetrahedral units connected by CoO4 tetrahedra through sharing corners. The connectivity leads to the formation of intersecting channels in all three crystallographic directions, resembling an aluminosilicate zeolite, and the channels are filled with charge-compensating ethylenediamine ions. [Copyright &y& Elsevier]

A novel compound, [Cu(en)2(H2O)]4[Cu(en)2]3.5[PMoVI8VIV6O42Cu(en)(1,10′-phen)]3·14H2O 1 (en = ethylenediamine, phen = phenanthroline), was synthesized hydrothermally (170 °C, 10 days, autogeneous pressure) and characterized by IR, ESR, elemental analyses and X-ray crystallography. The results of structure determination show that compound 1 contains three different structure cluster anions [PMoVI8VIV6O42]7− supporting complex cation [Cu(en)(1,10′-phen)]2+, in which one cluster anion possesses typical bicapped Keggin structure, while other two polyanions only have bicapped quasi-Keggin structures, and [Cu(en)(1,10′-phen)]2+ is linked through oxygen atoms to different V positions of two bicapped quasi-Keggin units. [Copyright &y& Elsevier]

A chiral 3-D open-framework coordination polymer [Co3(μ3-OH)(μ5-btc)(μ6-Hbtc)(H2O)3·6H2O]n was successfully obtained from the mixture of Co(CH3COO)2·4H2O, H3btc (where H3btc=benzene-1,2,4-tricarboxylic acid), NaOH and H2O under hydrothermal condition, which contains a novel and unprecedented coordination mode of btc (see Scheme 1Scheme 1Coordination modes of btc in the compounds having been synthesized. I, μ4-btc (in the literature ); II, μ6-btc and III, μ5-btc (see this paper).). [Copyright &y& Elsevier]