Persistence of the {…HOCO…HCN} heterosynthon in the co-crystals formed between anthranilic acid and three bipyridine-containing molecules
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Hadi D. Arman
Abstract
Co-crystals formed between anthranilic acid and each of 4,4′-bipyridine (1), 1,2-trans-1,2-bis(4-pyridyl)ethene (2) and 1,2-bis(4-pyridyl)ethane (3) have been formed from solutions containing 2:1 stoichiometric quantities of the reagents. Each structure features a centrosymmetric three-molecule aggregate mediated by O—H…N(pyridyl) hydrogen bonds indicating the robustness of the seven-membered {…HOCO…HCN} heterosynthon. The structures of (1)–(3) are isomorphous whereby the three-molecule aggregates are connected into flattened helical chains by amino-N—H…O(carbonyl) hydrogen bonds; the chains are consolidated into the three-dimensional structure by π…π interactions. The magnitude of the O—H…N hydrogen bonds in (1)–(3) are correlated with the basicity of the pyridine residue.
© by Oldenbourg Wissenschaftsverlag, Kuala Lumpur, Germany
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Articles in the same Issue
- A crystal chemical approach to superconductivity. II. An analysis of local bond-valence distribution in inorganic compounds
- Statistical direct methods revisited. Solving the constraints
- On ‘interface-plane scheme’ and symmetric grain boundaries
- Crystal structure determination of Hägg carbide, χ-Fe5C2 by first-principles calculations and Rietveld refinement
- Structure determination of [3Fe2S] complex with complicated pseudo-merohedric twinning
- Persistence of the {…HOCO…HCN} heterosynthon in the co-crystals formed between anthranilic acid and three bipyridine-containing molecules
