摘要

Treatment of bis(2-dimethylaminoethyl) ether (BDMAE) with nickel acetate affor-ded a novel 3D nickel(II) complex [Ni(BDMAE)(H2O)(3)center dot(CH3COO)(2)center dot(H2O)(2)] under solvothermal conditions. Its crystal structure was characterized by elemental analysis, IR spectrum, PXRD and single-crystal X-ray diffraction analysis. The complex belongs to the orthorhombic system, space group C2221 with a = 8.823(2), b = 13.932(3), c = 17.563(4) angstrom, V = 2158.9(8) angstrom(3), Z = 4, C12H36N2NiO10, M-r = 427.14, D-c = 1.314 g/cm(3), F(000) = 920 and mu = 0.944 mm(-1). Single-crystal X-ray diffraction reveals that the mononuclear nickel(II) ion is six-coordinated to one oxygen, two nitrogen atoms of the BDMAE ligand and three oxygen atoms of coordinated water molecules. The complex exhibits a 3D supramolecular structure through a variety of intermolecular and intramolecular hydrogen bonding interactions. In addition, the complex has been investigated for catalytic properties towards the Henry reaction of nitromethane with p-nitrobenzaldehyde, and the results indicated that the 1-p-nitrophenyl-2-nitroethanol product was obtained in excellent yield under optimum conditions with the complex as the catalyst.

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