Nature of the reactants and influence of water on the supramolecular assembly

作者：Wang XB; Vittal JJ^*

来源：Inorganic Chemistry, 2003, 42(17): 5135-5142.

DOI：10.1012/ic0344970

The influences of the nature of reactants and water on the self-assembly of cationic Cu(II) complex structures containing N-(2-pyridylmethyl)glycine (Hpgly) and N-(2-pyridylmethyl)-L-alanine (Hpala) ligands have been investigated. A metallamacrocycle [Cu-6(pgly)(3)(spgly)(3)] (ClO4)(6).9H(2)O has been formed by the reaction Of [Cu(pgly)(2)].2H(2)O with Cu(ClO4)(2).6H(2)O. The hexameric cation has Schiff base and reduced Schiff base ligands alternatively bonded to Cu(II) to provide cyclohexane-like conformation with a cavity diameter of 9.4 Angstrom. The reaction Of Cu(ClO4)(2).6H(2)O with Hpgly.HCl yielded [Cu(pgly)(H2O)](ClO4), which is presumed to have 1D coordination polymeric structure. A {Ksubset of[12-MC-3]} metallacrown, [K(ClO4)(3){Cu-3(pala)(3)}](ClO4) has been isolated by reacting Cu(ClO4)(2) with Kpala in MeCN/MeOH. This {Ksubset of[12-MC-3]} metallacrown further reacts with water to form an infinite 1D coordination polymer [Cu(pala)(H2O)(ClO4)](n), which can also be obtained by conducting the reaction in aqueous MeOH.

• 出版日期2003-8-25