Growth of Six Different Crystals of the Versatile Host Compound 1,1‘-Binaphthyl-2,2‘-dicarboxylic Acid from Solutions in 1,4-Dioxane
| Autor: | Jamshid Ashurov, Lidiya Izotova, B. T. Ibragimov, Edwin Weber, Samat Talipov |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Clathrate hydrate Crystal growth General Chemistry Crystal structure 1 4-Dioxane Condensed Matter Physics law.invention Crystallization temperature Crystallography chemistry.chemical_compound Dicarboxylic acid chemistry law Molecule General Materials Science Crystallization |
| Zdroj: | Crystal Growth & Design. 6:2523-2529 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/cg060274j |
| Popis: | The six different crystals of the versatile clathrate host racemic 1,1‘-binaphthyl-2,2‘-dicarboxylic acid (BNDA) that are obtained from its solution in 1,4-dioxane at varying crystallization temperatures from 15 to 35 °C are reported. They involve four solvates (1, 2BNDA/dioxane; 2, BNDA/dioxane; 3, 2BNDA/2dioxane; 4, BNDA/2dioxane), one mixed 1,4-dioxane solvate with water (5, BNDA/3dioxane/H3O+), and one guest-free form. The framework structures are characterized by 0D associates (1, 3, and 4) that either include (3, 4) or don't include (1) guest molecules and by 1D zigzag chains with (5) or without (2) participation of guest molecules. The pseudotetramorphic solvates 1−4 are formed in accordance with a previously formulated rule for pseudopolymorphic clathrates, which is as follows: (i) the guest:host ratio decreases as the crystallization temperature increases, and (ii) the higher the formation temperature of the clathrate modification, the closer the space occupied by guest molecules. |
| Databáze: | OpenAIRE |
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