Hydrothermal synthesis of organic-inorganic hybrid materials:: Network structures of the bimetallic oxides [M(Hdpa)2V4O12] (M = Co, Ni, dpa=4,4′-dipyridylamine)

The hydrothermal reactions of MCl2. 6H(2)O (M = Co, Ni) NaVO3, 4,4'-dipyridylamine (dpa), and H2O yield materials of the type [M(Hdpa)(2)V4O12] (M = Co (1), Ni (2)). The two-dimensional structures of 1 and 2 are constructed from bimetallic oxide networks (MV4O12)(n)(2n-) With monodentate Hdpa(dagger) projecting the protonated ring into the interlamellar region. The oxide network may be described as ruffled chains of corner-sharing {VO4} tetrahedra linked by {NiO4N2} octahedra into the two-dimensional assembly. Crystal data: C10H10Co0.5N3O6V2 (1), monoclinic P2(1)/c, a = 10.388(1) Angstrom, b = 7.6749(7) Angstrom, c = 16.702(2) Angstrom, beta = 102.516(1)degrees, Z = 4. C10H10N3Ni0.5O6V2 (2), monoclinic, P2(1)/c, c = 10.3815(2) Angstrom, b = 7.7044(2) Angstrom, c = 16.6638(4) Angstrom, beta = 102.573(1)degrees, Z = 4.