Synthesis, Structure, and Complexation of a Large 28-mer Macrocycle Containing Two Binding Sites for Either Anions or Metal Ions

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• 作者：Leroy Cronin ; Pamela A. McGregor ; Simon Parsons ; Simon Teat ; Robert O. Gould ; Vivienne A. White ; Nicholas J. Long ; and Neil Robertson
• 刊名：Inorganic Chemistry
• 出版年：2004
• 出版时间：December 13, 2004
• 年：2004
• 卷：43
• 期：25
• 页码：8023 - 8029
• 全文大小：279K
• 年卷期：v.43,no.25(December 13, 2004)
• ISSN：1520-510X

文摘

The "one-pot" synthesis and characterization of a large 28-mer macrocycle (H₄L²) with oxamido units capable ofcomplexing guest ions through oxygen or nitrogen donor atoms is reported. Single-crystal structure determinationof H₈L²(NO₃)₄ and {Cu₂[H₂L²](H₂O)₂}(NO₃)₂ demonstrated that the macrocycle contains two sites capable ofcomplexing two nitrate anions or two copper(II) ions, involving a large structural reorganization in the conformationof the macrocyclic framework on coordination of the copper(II) ions when compared to the nitrate. Electrochemicaland magnetic susceptibility measurements on the dinuclear Cu(II) complex and the related mononuclear and trinuclearCu(II) complexes derived from the related 14-mer macrocycle were carried out and illustrate the role of the oxamidogroups in mediating metal-metal interaction and delocalization.