HYDROTHERMAL SYNTHESIS, CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF A NEW 2D LAYERED VANADIUM OXIDE COMPLEX: [Ni(PHEN)(H_2O)]_2V_4O_(12)

摘要

A new organic-inorganic hybrid vanadium oxide complex, [Ni(phen)(H_2O)]_2V_4O_(12), 1 (phen= 1,10-phenanthroline), has been synthesized using a hydrothermal method and structurally characterized. Complex 1 exhibits a layered structure in which vanadium oxide chains, {V_2O_6}_n~(2n-), are linked to [Ni(phen)(H_2O)]~(2+)subunits to form a two-dimensional (2D) topology. Crystals are triclinic, space group P1-bar, with a = 7.869(2). 6 = 9.437(2), c = 20.992(4)A, alpha = 89.95(3), beta = 89.84(3), gamma = 67.22(3) deg, V= 1437.3(5)A3 and Z = 2. Magnetic measurements indicate that 1 exhibits a weak ferromagnetic exchange interaction.