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Anion Control in the Self-Assembly of a Cage Coordination Complex
Authors:Ramó  n Vilar,D. Michael P. Mingos,Andrew J. P. White,David J. Williams
Abstract:
An anion is encapsulated in the center of the new cage compound [Ni6(atu)8X]X3 (X=Cl—for the structure see picture—or Br; Hatu=amidinothiourea). A combination of Lewis acid–base and hydrogen-bonding interactions cause the square-planar [Ni(Hatu)2]2+ units, after deprotonation, to assemble to form this compound. A remarkable feature is the anion dependence of the cage formation; nitrate, acetate, and perchlorate are unsuitable as templates.
Keywords:Anion recognition  Cage compounds  Nickel  Self-assembly  Supramolecular chemistry
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