Family Of Polynuclear Nickel Cagelike Phenylsilsesquioxanes; Features Of Periodic Networks And Magnetic Properties
INORGANIC CHEMISTRY(2017)
Abstract
A new family of bi-, tetra-, penta-, and hexanickel cagelike phenylsilsesquioxanes 1-6 was obtained by self assembly and transmetalation procedures. Their crystal structures were established by single-crystal X-ray analysis, and features of crystal packing relevant to the network formation were studied by a topological analysis. Compounds 1, 2, and 4 are isolated architectures, while 3, 5, and 6 present extended 1D and 3D networks. The investigation of magnetic properties revealed the presence of ferro- (1 and 3-5) or antiferromagnetic (2 and 6) interactions between Ni(II) ions, giving rise in the most cases (1, 2, and 4-6) to the presence of a slow relaxation of the magnetization, which can originate from the spin frustration.
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Key words
polynuclear nickel cagelike phenylsilsesquioxanes,magnetic properties,periodic networks
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