A flexible dibenzo-O₄S₂-macrocycle: twist-and-squeeze type metal binding via synergic action of metal–ligand and metal–π interactions

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• 作者：Hyun Jee Kim ; Il Yoon ; So Young Lee ; Joobeom Seo ; Shim Sung Lee
• 关键词：Carbon– ; carbon bond forming reaction ; Supercritical fluid ; Hydroxyalkylation ; Acetonylation ; Uncatalyzed reaction
• 刊名：Tetrahedron Letters
• 出版年：2007
• 出版时间：26 November 2007
• 年：2007
• 卷：48
• 期：48
• 页码：8464-8467
• 全文大小：453 K

文摘

A 21-membered O₄S₂-donor-macrocycle (L) incorporating a dibenzo-subunit was synthesized. From the reaction of L with AgPF₆, an endo-type 1:1 complex [AgL]PF₆ (1) was obtained. On complexation, the conformation of L changes dramatically due to metal–ligand coordination as well as π-interactions between the metal and the dibenzo-subunit from L. This unique change in configuration showing a twist-and-squeeze type process illustrates how large flexible ligands stabilize complexes through conformational changes.