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

Cocrystallization of 1,3,5-cyclohexanetricarboxylic acid with 4,4‘-bipyridine bases of different CH2 chain lengths (n = 0, 2, 4) has afforded the ternary host framework [H3CTA·bipy-eta(gauche)·(bipy-bu)0.5] (2), sustained by O−H···N hydrogen bonds. Inclusion of p-dichlorobenzene in the square voids...

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Bibliographic Details
Published inCrystal growth & design Vol. 5; no. 5; pp. 1683 - 1686
Main Authors Bhogala, Balakrishna R, Basavoju, Srinivas, Nangia, Ashwini
Format Journal Article
LanguageEnglish
Published Washington,DC American Chemical Society 01.09.2005
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Methods of crystal growth; physics of crystal growth
Physics
Voids
Crystal growth
Synthesis
Hydrogen bonds
Chain length
Cocrystallization
Molecular complex
Carboxylic acids
Inclusions
Crystal structure
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Summary:Cocrystallization of 1,3,5-cyclohexanetricarboxylic acid with 4,4‘-bipyridine bases of different CH2 chain lengths (n = 0, 2, 4) has afforded the ternary host framework [H3CTA·bipy-eta(gauche)·(bipy-bu)0.5] (2), sustained by O−H···N hydrogen bonds. Inclusion of p-dichlorobenzene in the square voids of host 2 provides the first example of a quaternary cocrystal. Crystal structures of ternary cocrystals 1−3 show that methylene chains of bipy bases are not mere inert spacer units but have a conformational and structural role in controlling the supramolecular architecture of molecular complexes with carboxylic acids.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg058012p