Direct anion effects on coordination polymerizations: construction and physicochemical properties of 1D, 2D, and 3D copper(II) coordination polymers containing 1,3,5-tris(isonicotinoyloxyethyl)cyanurate
Investigations into the anion effects on the molecular construction of a series of CuX2 (X− = BF4−, ClO4−, and NO3−) complexes with 1,3,5-tris(isonicotinoyloxyethyl)cyanurate (L) were carried out. Suitable combinations of tridentate N-donor ligands and a variety of coordination geometries of copper(II) ions produce unique 1D, 2D, and 3D coordination polymers containing open cavities suitable for small chemical species, according to the nature of the polyatomic anions. Indeed, the anion exchangeability and catalytic effects of these polymers are strongly dependent on subtle anion differences, including solubility. Calcination of [Cu(ClO4)(L)(Me2SO)2](ClO4)·2CH2Cl2 crystals preserves its crystallinity at 200 °C, and at 600 °C finally produces stick-shaped microcrystalline copper(II) oxide.
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