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Abstract: A new compound, [Co(en)3]4[P2Mo5O23]2·9H2O, has been prepared under mild hydrothermal conditions and structurally characterized by elemental analyses, IR spectrum, and single-crystal X-ray diffraction. Yellow crystals crystallized in the triclinic space group with a=10.303(2) Å, b=11.871(2) Å, c=20.288(4) Å, α=99.46(3)°, β=96.39(3)°, γ=115.32(3)°, V=2165.9(8) Å3, Z=1 and R=0.0566. The compound consists of diphosphopentamolybdate clusters, [Co(en)3]3+ complexes, and water molecules, which are held together to generate a three-dimensional supramolecular network via hydrogen-bonding interaction. Interestingly, the three-dimensional supramolecular network contains cyclic water hexamers, which play an important role in the formation of the crystal. [Copyright &y& Elsevier]

Abstract: Two new cobalt (II) containing coordination polymers {Co3[O2C(CH2)4CO2]3[1,10′-phen]2} n (1) and {Co2[O2C(CH2)3CO2]2[1,10′-phen]2} n (2) have been synthesized under the hydrothermal condition and characterized by elemental analyses, IR, TG analyses and the single crystal X-ray diffractions. Crystal data for compound 1: C42H42Co3N4O12, triclinic P-1, a=9.0014(18)Å, b=9.0573(18)Å, c=13.327(3)Å, α=97.93(3), β=100.06(3), γ=104.85(3), Z=1. Crystal data for compound 2: C34H32Co2N4O8, monoclinic P2(1)/c, a=10.537(2)Å, b=20.780(4)Å, c=13.471(3)Å, β=100.63(3), Z=4. Compound 1 exhibits a novel two-dimensional layer framework, in which the trinuclear Co clusters are linked by adipate anions. Compound 2 represents a one-dimensional chain. Furthermore, the magnetic behavior of compound 2 is studied. [Copyright &y& Elsevier]

Abstract: A unique composite hybrid material [Cu4(bpy)4(H2O)2(PO4)2](H3O)[PMo12O40] 1 (bpy=2, 2′-bipyridine) has been hydrothermally synthesized from the reaction of Na2MoO4·2H2O, H3PO4, Cu(MeCO2)2·H2O, 2, 2′-bpy and water. It has been characterized by elemental analysis, IR, TG, and single-crystal X-ray diffraction. Compound 1 is constructed from the organic–inorganic hybrid [Cu4(bpy)4(H2O)2(PO4)2]2+ cation and α-Keggin [PMo12O40]3- polyoxoanion, which represents the first example of a hybrid material that combines transition metal phosphate and polyoxometalate. [Copyright &y& Elsevier]