A new molybdenum(V) nickel phosphate based on divacant [H30(Mo(V)16O32)Ni14(PO4)26O2(OH)4(H2O)8]12- wheel.
A new molybdenum nickel phosphate, [H(2)en](3)Na(4)[Ni(H(2)O)(3)][H(30)(Mo(V)(16)O(32))Ni(14)(PO(4))(26)O(2) (OH)(4)(H(2)O)(8)] x 8 H(2)O 1, has been hydrothermally synthesized and structurally characterized. Compound 1 crystallizes in the monoclinic space group P2(1)/c with a = 18.6118(6) A, b = 20.9879(6) A, c = 22.9360(5) A, beta = 116.678(2) degrees, V = 8005.5(4) A(3) and Z = 2. The polyoxoanion of 1 exhibits an unusual divacant wheel-type cluster in which two {NiO(6)} octahedra are lost from the well-known "saturated" {Mo(16)TM(16)P(26)} wheel. The two vacant sites are occupied by two protonated ethylenediamines (H(2)en) via the strong hydrogen-bonding interactions between the surface O atoms of the polyoxoanions and the amine group derived from the H(2)en ligands. DC susceptibility measurements show that compound 1 exhibits strong antiferromagnetic interactions inside the wheel-type cluster.
Zhang
Yu-Nan
YN
Department of Applied Chemistry, Harbin Institute of Technology, Harbin, 150001, PR China.
Zhou
Bai-Bin
BB
Li
Yang-Guang
YG
Su
Zhan-Hua
ZH
Zhao
Zhi-Feng
ZF
D006860:Hydrogen Bonding; D008280:Magnetics; D008958:Models, Molecular; D008968:Molecular Conformation; D008982:Molybdenum / Q000737:chemistry; D009532:Nickel / Q000737:chemistry; D010710:Phosphates / Q000138:chemical synthesis / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013818:Thermogravimetry; D017973:Tungsten Compounds / Q000737:chemistry; D014639:Vanadium / Q000737:chemistry; D000099294:Polyoxometalates
D008982:Molybdenum; D009532:Nickel; D010710:Phosphates; D017973:Tungsten Compounds; D014639:Vanadium; C102296:polyoxometalate I; D000099294:Polyoxometalates