Calix[4]thiacrowns as Ditopic Hosts for Homo- and Heterobinuclear Accommodation: First Report of a Chopsticks-Type -Coordination

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• 作者：Jai Young Lee ; Jongchul Kwon ; Chul Soon Park ; Ji-Eun Lee ; Wonbo Sim ; Jong Seung Kim ; Joobeom Seo ; Il Yoon ; Jong Hwa Jung ; Shim Sung Lee
• 刊名：Organic Letters
• 出版年：2007
• 出版时间：February 1, 2007
• 年：2007
• 卷：9
• 期：3
• 页码：493 - 496
• 全文大小：152K
• 年卷期：v.9,no.3(February 1, 2007)
• ISSN：1523-7052

文摘

Calix[4]thiacrowns with hetero-L¹ and a homodonor set (L²) were synthesized and characterized by X-ray analysis. From the reaction of L² withAgPF₆, disilver complex [Ag₂(L²)](PF₆)₂ (1) was isolated. By comparing 1,3-alternate conformations of L² and 1, we found a considerabledecrease of dihedral angles of two opposite aromatic rings upon complexation. This finding can be explained in terms of the "chopsticksprocess", which illustrates how Ag⁺-arene -coordination occurs. Heterobinuclear complexation of L¹ in solution was also observed.