Institute of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
Dalton Trans. 2010 Mar 21;39(11):2936-41. doi: 10.1039/b922998a. Epub 2010 Feb 8.
The synthesis and spectroscopic studies of a dicopper(II) double helicate capable of binding anions is described. X-Ray crystallographic analysis of three anion variations of the complex have shown that the helicate is capable of accommodating anions with an approximate volume of 0.09 nm(3) and smaller. ESI-MS revealed that the supramolecular complexes retain the 2 : 2 ligand : metal cluster in solution. Spectrometric analysis has shown the complex is capable of binding anions in a 1 : 1 ratio of helicate to anion, in the order SO(4)(2-) > HPO(4)(2-) > ClO(4)(-) approximately BF(4)(-) approximately NO(3)(-). We demonstrate that coordination to the metal centre, H-bonding and electrostatic interactions all play a role in encapsulating the anions.
描述了一种能够结合阴离子的双核铜（II）双螺旋的合成和光谱研究。对配合物三种阴离子变体的 X 射线晶体学分析表明，螺旋体能够容纳大约 0.09nm（3）和更小体积的阴离子。ESI-MS 表明，超分子配合物在溶液中保留了 2：2 的配体：金属簇。光谱分析表明，该配合物能够以 1：1 的比例与阴离子结合，结合顺序为 SO(4)(2-)>HPO(4)(2-)>ClO(4)(-)≈BF(4)(-)≈NO(3)(-)。我们证明，与金属中心的配位、氢键和静电相互作用都在包封阴离子中发挥作用。
