Hydrothermal Syntheses, Structure Characteristics and Magnetic Properties of a Series of New Molybdenum Arsenates Based on {(As3O3)2(Mo6O18) (MO6)} (M = Ni, (1); Co, (2); Zn, (3))

作者：Pan Gao-Feng; Kong Li^*; Yu Hai-Hui^*; Liu Chun-Guang; Sun Xu-Hui

来源：Chinese Journal of Structural Chemistry, 2017, 36(7): 1108-1116.

DOI：10.14102/j.cnki.0254-5861.2011-1475

• hydrothermal syntheses
• crystal structure
• molybdenum arsenate
• magnetic properties

Three new polyoxometalates K-2[H-2(As3O3)(2)(Mo6O18)(NiO6)]center dot H2O (1), K-2[H2-( As3O3)(2)(Mo6O18)(CoO6)]center dot H2O (2) and [Zn(H4,4'-bpy)(2)(H2O)(4)][(As3O3)(2)(Mo6O18)(ZnO6)]center dot 4H(2)O (3) (4,4'-bpy = 4,4'-bipyridine) have been synthesized under hydrothermal conditions and characterized by IR, elemental analyses, XPS and single-crystal X-ray diffraction analyses, respectively. Compound 1 represents a new 3D framework structure constructed from polyoxoanion [(As3O3)(2)(Mo6O18)(NiO6)](4-) via covalent bond. Compound 2 has an identical structure with 1. Compound 3 represents a new 2D layer structure constructed from transition metal coordination cations [Zn(H4,4'-bipy)(2)(H2O)(4)](4+), lattice water molecules and polyoxoanions [(As3O3)(2)-( Mo6O18)(ZnO6)](4-) via multi-point N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonding interactions. Crystal data: for 1, cubic, space group Pa-3, a = 15.0022(8) angstrom, V = 3376.5(3) angstrom(3), Z = 24; for 2, cubic space group Pa-3, a = 15.1596(10), V = 3483.88 angstrom(3), Z = 24; for 3, monoclinic, space group C2/m, a = 19.699(4), b = 14.223(3), c = 9.1455(18) angstrom, beta = 106.80(3)degrees, V = 2453.0(9) angstrom(3), Z = 8. In addition, the magnetic behaviors for compounds 1 and 2 have been investigated.

• 出版日期2017-7-15
• 单位吉林化工学院