engleski

The cocrystal of 4-oxopimelic acid and 4, 4′-bipyridine: polymorphism and solid-state transformations

Cocrystal of 4-oxopimelic acid and 4, 4’-bipyridine was isolated in two polymorphic forms depending upon the solvent of crystallisation. Polymorphs exhibit hydrogen-bonded chains formed between carboxyl and pyridine moieties while different packing arrangements of chains result from C-H•••O interactions. Solid-state synthesis and interconversion conditions were investigated by grinding and thermal methods.

cocrystal; polymorphism; supramolecular synthons; hydrogen bond; crystal engineering

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