Citation:
XIE Xing-Kun, ZHANG Xiao-Feng, LIU Hai-Xiong, WANG Yang, CHEN Chang-Neng, HUANG De-Guang. Synthesis of a Hexagonal Molecular Nickel-wheel[J]. Chinese Journal of Structural Chemistry,
;2015, 34(11): 1689-1696.
doi:
10.14102/j.cnki.0254-5861.2011-0725
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The macrocyclic ligand ⊂-H2pyN2-O3ane (2) was readily prepared in a diluted condition in THF. The mixture of 2 and Ni(OTf)2 in DMF using Et4NOH as the base source gave a mononuclear square planar complex (Et4N)[Ni(OH)(⊂-pyN2-O3ane)] (3). Addition of Fe(OTf)2 into the solution of 3 in DMF instantly generated a hexagonal molecular nickel-wheel 4 in 72% yield. Both 3 and 4 were characterized by X-ray crystallography on a MoKα radiation diffractometer (λ=0.71073 Å): the crystal of 3 was grown in space group P212121 with a=12.079(5), b=15.099(6), c=17.299(8) Å, V=3160(2) Å3, Z=4, Dc=1.369 g/cm3, F(000)=1384, C33H44N4NiO6, Mr=651.43, μ=0.665 cm-1, R=0.0353, wR=0.0668 for 4548 observed reflections with I>2σ(I); 4 is in space group P21/n with a=17.7416(17), b=17.5490(17), c=29.036(3) Å, β=106.195(2)°, V=8681.5(14) Å3, Z=2, Dc=1.352 g/cm3, F(000)=3704, C170H190N22Ni6O40, Mr=3533.70, μ=719 cm-1, R=0.0841 and wR=0.2339 for 9371 observed reflections with I>2σ(I).
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Keywords:
- macrocyclic ligand,
- hydroxide,
- hexagonal,
- nickel-wheel
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