Control of crystal structure using temperature and time

Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
Savannah C ZachariasSusan A Bourne

Abstract

Three novel crystal structures were obtained from iron(III) acetylacetonate and 2,6-pyridinedicarboxylic acid. The structures elucidated were found to be dependent on the temperature and length of time allowed for the reaction. The product of the reaction between iron(III) acetylacetonate and 2,6-pyridinedicarboxylic acid in acetonitrile at room temperature is [FeC12H12NO7]·CH3CN, (I). When the reaction temperature was increased to 60°C, FeC12H10NO6, (II), was isolated after 2 h and [FeC12H10NO6]4, (III), was isolated after 24 h. (I) is a discrete complex, whereas (II) and (III) form tetramers.

References

Apr 1, 1990·Acta Crystallographica. Section B, Structural Science·M C EtterJ Bernstein
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
May 29, 2018·Soft Matter·Savannah C ZachariasSusan A Bourne

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