Hydrothermal Synthesis and X‐ray Crystal Structure of Four Inorganic‐Organic Hybrid Compounds in Vanadium /Copper Iodate Family

Four inorganic-organic hybrid compounds with the formulae (1,10-phen)(VO2)(IO3) (1), (2,2′-bipy)(VO2)(IO3) (2), [Cu3(2,2′-bipy)3Cl3(IO3)2]·I1.5 (3), and [Cu(2,2′-bipy)(H2O)(IO3)2]· (H2O)2 (4) are hydrothermally synthesized at 120 °C for 6 d and characterized by single-crystal X-ray diffraction. The use of two different bidentate organodiamine ligands 1,10-phen and 2,2′-bipy in the V/I/O system gives rise to compounds 1 and 2, which crystallize in a monoclinic system with the space group C2/c, a = 17.8131(6) A, b = 15.0470(7) A, c = 12.9902(4) A, β = 133.095(2)°, V = 2542.49(17) A3 for 1 and space group P21/c, a = 13.3095(5) A, b = 15.0993(8) A, c = 13.0454(4) A, β = 116.971(2)°, V = 2335.88(17) A3 for 2. The use of the bidentate organodiamine ligand 2,2′-bipy in the Cu/I/O system gives rise to the variety in the structure of products 3 and 4, which crystallize in a triclinic system with the same space group . a = 8.5143(2) A, b = 10.4908(3) A, c = 22.8420(6) A, α = 93.769(10)°, β = 91.723(10)°, γ = 112.111(10)°, V = 1882.83(9) A3 for 3 and a = 6.731(6) A, b = 10.110(4) A, c = 12.899(6) A, α = 106.00(5)°, β = 95.45(4)°, γ = 107.69(6)°, V = 788.4(9) A3 for 4. The solid-state structures of the compounds 1 and 2 have chains with repeat units of alternative corner sharing of [VO4N2] octahedra and [IO3] pyramids. Compound 3 is a chain containing [IO3] pyramids and [VO4N] square pyramids and compound 4 consists of Cu(2,2′-bipy)2+ linked by one water molecule and two [IO3] pyramids. The thermal stabilities of the compounds are investigated.