Three-Component Carboxylic Acid-Bipyridine Lattice Inclusion Host. Supramolecular Synthesis of Ternary Cocrystals

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• 作者：Balakrishna R. Bhogala ; Srinivas Basavoju ; and Ashwini Nangia
• 刊名：Crystal Growth & Design
• 出版年：2005
• 出版时间：September 2005
• 年：2005
• 卷：5
• 期：5
• 页码：1683 - 1686
• 全文大小：265K
• 年卷期：v.5,no.5(September 2005)
• ISSN：1528-7505

文摘

Cocrystallization of 1,3,5-cyclohexanetricarboxylic acid with 4,4'-bipyridine bases of different CH₂ chainlengths (n = 0, 2, 4) has afforded the ternary host framework [H₃CTA·bipy-eta(gauche)·(bipy-bu)_0.5] (2), sustained byO-H···N hydrogen bonds. Inclusion of p-dichlorobenzene in the square voids of host 2 provides the first example of aquaternary cocrystal. Crystal structures of ternary cocrystals 1-3 show that methylene chains of bipy bases are not mereinert spacer units but have a conformational and structural role in controlling the supramolecular architecture of molecularcomplexes with carboxylic acids.